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bobpaul/btrfs filesystem show

Last active February 6, 2025 15:41
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btrfs scrub failing on 2 devices in 5device "mirror"
Raw
btrfs filesystem show
# btrfs fi show /mnt/btrfs/
Label: 'array-root' uuid: cce741b6-b864-4e9c-bccf-057d93694bb2
Total devices 5 FS bytes used 10.50TiB
devid 1 size 3.64TiB used 3.32TiB path /dev/bcache3
devid 4 size 3.64TiB used 3.32TiB path /dev/bcache0
devid 5 size 12.73TiB used 10.03TiB path /dev/bcache1
devid 6 size 3.64TiB used 3.32TiB path /dev/bcache2
devid 7 size 2.73TiB used 2.41TiB path /dev/bcache4
Raw
btrfs rescue super-recover
# # no problems were found, nothing was changed:
#
# btrfs rescue super-recover -v /dev/bcache0
All Devices:
Device: id = 5, name = /dev/bcache1
Device: id = 1, name = /dev/bcache3
Device: id = 6, name = /dev/bcache2
Device: id = 7, name = /dev/bcache4
Device: id = 4, name = /dev/bcache0
Before Recovering:
[All good supers]:
device name = /dev/bcache1
superblock bytenr = 65536
device name = /dev/bcache1
superblock bytenr = 67108864
device name = /dev/bcache1
superblock bytenr = 274877906944
device name = /dev/bcache3
superblock bytenr = 65536
device name = /dev/bcache3
superblock bytenr = 67108864
device name = /dev/bcache3
superblock bytenr = 274877906944
device name = /dev/bcache2
superblock bytenr = 65536
device name = /dev/bcache2
superblock bytenr = 67108864
device name = /dev/bcache2
superblock bytenr = 274877906944
device name = /dev/bcache4
superblock bytenr = 65536
device name = /dev/bcache4
superblock bytenr = 67108864
device name = /dev/bcache4
superblock bytenr = 274877906944
device name = /dev/bcache0
superblock bytenr = 65536
device name = /dev/bcache0
superblock bytenr = 67108864
device name = /dev/bcache0
superblock bytenr = 274877906944
[All bad supers]:
All supers are valid, no need to recover
Raw
offline btrfs check shows no errors
# btrfs check --readonly /dev/bcache4
[1/8] checking log skipped (none written)
[2/8] checking root items
[3/8] checking extents
[4/8] checking free space cache
[5/8] checking fs roots
[6/8] checking only csums items (without verifying data)
[7/8] checking root refs
[8/8] checking quota groups skipped (not enabled on this FS)
Opening filesystem to check...
Checking filesystem on /dev/bcache4
UUID: cce741b6-b864-4e9c-bccf-057d93694bb2
found 11550182076419 bytes used, no error found
total csum bytes: 11248213256
total tree bytes: 21745098752
total fs tree bytes: 7784570880
total extent tree bytes: 1561251840
btree space waste bytes: 2209065715
file data blocks allocated: 12056932474880
referenced 11767166226432
#
Raw
offline scrub passes
# btrfs check --readonly --check-data-csum /dev/bcache0
Opening filesystem to check...
Checking filesystem on /dev/bcache0
UUID: cce741b6-b864-4e9c-bccf-057d93694bb2
[1/8] checking log skipped (none written)
[2/8] checking root items
[3/8] checking extents
[4/8] checking free space cache
[5/8] checking fs roots
[6/8] checking csums against data
[7/8] checking root refs
[8/8] checking quota groups skipped (not enabled on this FS)
found 11550182072324 bytes used, no error found
total csum bytes: 11248213256
total tree bytes: 21745098752
total fs tree bytes: 7784570880
total extent tree bytes: 1561251840
btree space waste bytes: 2209065715
file data blocks allocated: 12056932474880
referenced 11767166226432
Raw
scrub
# btrfs scrub start -BrdR /mnt/btrfs/ Starting scrub on devid 1
Starting scrub on devid 4
Starting scrub on devid 5
Starting scrub on devid 6
Starting scrub on devid 7
ERROR: scrubbing /mnt/btrfs/ failed for device id 1: ret=-1, errno=5 (Input/output error) ERROR: scrubbing /mnt/btrfs/ failed for device id 5: ret=-1, errno=5 (Input/output error)
Scrub device /dev/bcache3 (id 1) canceled
Scrub started: Tue Jan 28 19:08:08 2025
Status: aborted
Duration: 0:03:11
data_extents_scrubbed: 0
tree_extents_scrubbed: 1209000
data_bytes_scrubbed: 0
tree_bytes_scrubbed: 4952064000
read_errors: 0
csum_errors: 0
verify_errors: 0
no_csum: 0
csum_discards: 0
super_errors: 0
malloc_errors: 0
uncorrectable_errors: 0
unverified_errors: 0
corrected_errors: 0
last_physical: 6171262976
Scrub device /dev/bcache0 (id 4) done
Scrub started: Tue Jan 28 19:08:08 2025
Status: finished
Duration: 7:23:24
data_extents_scrubbed: 57117871
tree_extents_scrubbed: 258621
data_bytes_scrubbed: 3399622529024
tree_bytes_scrubbed: 1059311616
read_errors: 0
csum_errors: 0
verify_errors: 0
no_csum: 1451224
csum_discards: 0
super_errors: 0
malloc_errors: 0
uncorrectable_errors: 0
unverified_errors: 0
corrected_errors: 0
last_physical: 3991132307456
Scrub device /dev/bcache1 (id 5) canceled
Scrub started: Tue Jan 28 19:08:08 2025
Status: aborted
Duration: 0:02:32
data_extents_scrubbed: 0
tree_extents_scrubbed: 953596
data_bytes_scrubbed: 0
tree_bytes_scrubbed: 3905929216
read_errors: 0
csum_errors: 0
verify_errors: 0
no_csum: 0
csum_discards: 0
super_errors: 0
malloc_errors: 0
uncorrectable_errors: 0
unverified_errors: 0
corrected_errors: 0
last_physical: 4090888192
Scrub device /dev/bcache2 (id 6) done
Scrub started: Tue Jan 28 19:08:08 2025
Status: finished
Duration: 6:55:00
data_extents_scrubbed: 54834490
tree_extents_scrubbed: 2295868
data_bytes_scrubbed: 3421023117312
tree_bytes_scrubbed: 9403875328
read_errors: 0
csum_errors: 0
verify_errors: 0
no_csum: 449898
csum_discards: 0
super_errors: 0
malloc_errors: 0
uncorrectable_errors: 0
unverified_errors: 0
corrected_errors: 0
last_physical: 3991163305984
Scrub device /dev/bcache4 (id 7) done
Scrub started: Tue Jan 28 19:08:08 2025
Status: finished
Duration: 8:56:13
data_extents_scrubbed: 38141401
tree_extents_scrubbed: 505577
data_bytes_scrubbed: 2363512324096
tree_bytes_scrubbed: 2070843392
read_errors: 0
csum_errors: 0
verify_errors: 0
no_csum: 55206
csum_discards: 0
super_errors: 0
malloc_errors: 0
uncorrectable_errors: 0
unverified_errors: 0
corrected_errors: 0
last_physical: 2991438626816
# btrfs scrub status /mnt/btrfs/
UUID: cce741b6-b864-4e9c-bccf-057d93694bb2
Scrub started: Tue Jan 28 19:08:08 2025
Status: aborted
Duration: 8:56:13
Total to scrub: 21.01TiB
Rate: 272.87MiB/s
Error summary: no errors found
# #... I do find this quite misleading. Personally, I'd categorize this as a "usability bug". I understand that no
# # CHECKSUM errors were found, but certainly a structural error WAS found.
# # It seems like a non-zero exit status and an "Error summary" like "filesystem damaged, could not complete" would be good.
# #
# # I wasted time trying to figure out "what" was aborting the scrub, but the "no errors" left me rather non-plussed.
# # The invididual disk results (devid 1 and 5) are especially misleading while the scrub is still in progress.
# # while dmesg showed one had aborted, both stopped and immediately jumped to "100%" with a status of "running (history)".
# # No idication while watching scrub status for the scrub in progress that anything bad had happed. It certainly would have been
# # better if `btrfs scrub status -d` had shown 2 disks with a status of "aborted" while the other 3 were running. And again,
# # something other than "no errors" I think would have been appropriate... /soapbox
Raw
scrub running, dmesg
[16558.355437] BTRFS info (device bcache3): first mount of filesystem cce741b6-b864-4e9c-bccf-057d93694bb2
[16558.355454] BTRFS info (device bcache3): using crc32c (crc32c-intel) checksum algorithm
[16558.355462] BTRFS info (device bcache3): disk space caching is enabled
[16558.355465] BTRFS warning (device bcache3): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
[16561.894309] BTRFS info (device bcache3): bdev /dev/bcache3 errs: wr 0, rd 94, flush 0, corrupt 9320, gen 0
[16561.894323] BTRFS info (device bcache3): bdev /dev/bcache0 errs: wr 4, rd 56, flush 0, corrupt 21915, gen 0
[16561.894328] BTRFS info (device bcache3): bdev /dev/bcache1 errs: wr 59, rd 1, flush 0, corrupt 17, gen 0
[16561.894333] BTRFS info (device bcache3): bdev /dev/bcache2 errs: wr 1, rd 108, flush 1, corrupt 8078, gen 0
[16561.894338] BTRFS info (device bcache3): bdev /dev/bcache4 errs: wr 524248893, rd 262954412, flush 1663, corrupt 9506114, gen 68115
[16662.992224] BTRFS info (device bcache3): scrub: started on devid 4
[16663.021845] BTRFS info (device bcache3): scrub: started on devid 5
[16663.062588] BTRFS info (device bcache3): scrub: started on devid 1
[16663.105192] BTRFS info (device bcache3): scrub: started on devid 7
[16663.152500] BTRFS info (device bcache3): scrub: started on devid 6
[16815.260152] BTRFS error (device bcache3): tree first key mismatch detected, bytenr=67541964967936 parent_transid=3164351 key expected=(67541791637504,168,17179873280) has=(67541791637504,168,4096)
[16815.262238] BTRFS error (device bcache3): tree first key mismatch detected, bytenr=67541964967936 parent_transid=3164351 key expected=(67541791637504,168,17179873280) has=(67541791637504,168,4096)
[16815.265664] BTRFS info (device bcache3): scrub: not finished on devid 5 with status: -5
[16854.139103] BTRFS error (device bcache3): tree first key mismatch detected, bytenr=67541964967936 parent_transid=3164351 key expected=(67541791637504,168,17179873280) has=(67541791637504,168,4096)
[16854.143591] BTRFS error (device bcache3): tree first key mismatch detected, bytenr=67541964967936 parent_transid=3164351 key expected=(67541791637504,168,17179873280) has=(67541791637504,168,4096)
[16854.147465] BTRFS info (device bcache3): scrub: not finished on devid 1 with status: -5
[23781.686897] perf: interrupt took too long (2526 > 2500), lowering kernel.perf_event_max_sample_rate to 78900
[28342.160537] perf: interrupt took too long (3160 > 3157), lowering kernel.perf_event_max_sample_rate to 63000
[41563.234606] BTRFS info (device bcache3): scrub: finished on devid 6 with status: 0
[41740.662162] perf: interrupt took too long (3961 > 3950), lowering kernel.perf_event_max_sample_rate to 50400
[43267.054362] BTRFS info (device bcache3): scrub: finished on devid 4 with status: 0
[48836.426233] BTRFS info (device bcache3): scrub: finished on devid 7 with status: 0
@bobpaul
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bobpaul commented Feb 5, 2025

I had a large folder (2.7TB) which contained data I was only storing temporarily and didn't need any longer. For some reason I convinced myself that deleting data was a safe thing to do, so removed that entire folder. Over the next 20 minutes or so I watched the freespace grow until in dmesg there was an error indicating that the transaction was reverted and the filesystem was now read-only. i didn't get a copy of the error. At that moment the filesystem was not behaving well, and only about 20% of data would copy without failure.

But I unmounted the filesystem (unsure whether it would ever mount again), btrfs check passed without errors, and when I re-mounted the filesystem it was in the same state as previously: BTRFS error (device bcache3): tree first key mismatch detected, bytenr=67541964967936 parent_transid=3164351 key expected=(67541791637504,168,17179873280) has=(67541791637504,168,4096) eventually shows, even when using the filesystem mounted read-only, but no errors reading any files.

I've successfully read every file on the filesystem without checksum errors showing up in dmesg. This indicates that at least 1 copy of every block is passing block level checksums.

I find it very interesting that check passes, even check with full checksums, but scrub does not, and yet all of the data seems intact.

@bobpaul
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bobpaul commented Feb 5, 2025

btrfs rescue clear-space-cache v1 and btrfs rescue clear-ino-cache both complete successfully. Mounting with -o space_cache=v2 fails due to that same key mismatch, but -o space_cache=v1 succeeds.

@bobpaul
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bobpaul commented Feb 6, 2025 •
edited
Loading

Tried chunk-recover with the intention of pressing n on all questions, but was never asked. The output was longer than my scrollback buffer in tmux, but this is what I got:

btrfs rescue chunk-recover -v /dev/bcache1 ... Chunk tree recovery failed 
# btrfs rescue chunk-recover -v /dev/bcache1

... SNIP...

  Chunk: start = 65664055836672, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 11197014343680
      [ 1] Stripe: devid = 6, offset = 3818294083584
      No block group.
      No device extent.
  Chunk: start = 65665129578496, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 11198088085504
      [ 1] Stripe: devid = 6, offset = 3819367825408
      No block group.
      No device extent.
  Chunk: start = 65666203320320, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 9783970103296
      [ 1] Stripe: devid = 6, offset = 432719003648
      Block Group: start = 65666203320320, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 65667277062144, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 11199161827328
      [ 1] Stripe: devid = 6, offset = 3820441567232
      Block Group: start = 65667277062144, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 65668350803968, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 11200235569152
      [ 1] Stripe: devid = 6, offset = 3821515309056
      No block group.
      No device extent.
  Chunk: start = 65669424545792, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 11201309310976
      [ 1] Stripe: devid = 6, offset = 3822589050880
      No block group.
      No device extent.
  Chunk: start = 65670498287616, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 11202383052800
      [ 1] Stripe: devid = 6, offset = 3823662792704
      No block group.
      No device extent.
  Chunk: start = 65671572029440, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 11203456794624
      [ 1] Stripe: devid = 6, offset = 3824736534528
      No block group.
      No device extent.
  Chunk: start = 65672645771264, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 9772158943232
      [ 1] Stripe: devid = 4, offset = 1983235751936
      No block group.
      No device extent.
  Chunk: start = 65694120607744, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 9945031376896
      [ 1] Stripe: devid = 6, offset = 404801716224
      No block group.
      No device extent.
  Chunk: start = 65716669186048, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 9692702048256
      [ 1] Stripe: devid = 6, offset = 2378406297600
      Block Group: start = 65716669186048, len = 1073741824, flag = 11
      Device extent list:
          [ 0]Device extent: devid = 6, start = 2378406297600, len = 1073741824, chunk offset = 65716669186048
  Chunk: start = 65732775313408, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 10379896815616
      [ 1] Stripe: devid = 6, offset = 2467526868992
      Block Group: start = 65732775313408, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 65742438989824, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 11207751761920
      [ 1] Stripe: devid = 6, offset = 3832252727296
      No block group.
      No device extent.
  Chunk: start = 65744586473472, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 11209899245568
      [ 1] Stripe: devid = 6, offset = 3834400210944
      No block group.
      No device extent.
  Chunk: start = 65811158466560, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 11261438853120
      [ 1] Stripe: devid = 6, offset = 3887013560320
      No block group.
      Device extent list:
          [ 0]Device extent: devid = 6, start = 3887013560320, len = 1073741824, chunk offset = 65811158466560
  Chunk: start = 66433928724480, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 9344809697280
      [ 1] Stripe: devid = 4, offset = 776316387328
      No block group.
      Device extent list:
          [ 0]Device extent: devid = 5, start = 9344809697280, len = 1073741824, chunk offset = 66433928724480
  Chunk: start = 66437149949952, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 9345883439104
      [ 1] Stripe: devid = 1, offset = 580895375360
      No block group.
      Device extent list:
          [ 0]Device extent: devid = 5, start = 9345883439104, len = 1073741824, chunk offset = 66437149949952
  Chunk: start = 66444666142720, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 9352325890048
      [ 1] Stripe: devid = 1, offset = 586264084480
      No block group.
      Device extent list:
          [ 0]Device extent: devid = 5, start = 9352325890048, len = 1073741824, chunk offset = 66444666142720
  Chunk: start = 66553114066944, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 8816528719872
      [ 1] Stripe: devid = 4, offset = 830003478528
      Block Group: start = 66553114066944, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 66602506190848, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 9470437490688
      [ 1] Stripe: devid = 4, offset = 846109605888
      No block group.
      No device extent.
  Chunk: start = 66603579932672, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 9471511232512
      [ 1] Stripe: devid = 1, offset = 704375685120
      No block group.
      No device extent.
  Chunk: start = 66724912758784, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 11341969489920
      [ 1] Stripe: devid = 4, offset = 880469344256
      Block Group: start = 66724912758784, len = 1073741824, flag = 11
      Device extent list:
          [ 0]Device extent: devid = 5, start = 11341969489920, len = 1073741824, chunk offset = 66724912758784
  Chunk: start = 66768936173568, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 11381697937408
      [ 1] Stripe: devid = 4, offset = 894427987968
      Block Group: start = 66768936173568, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 66796853460992, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 11407467741184
      [ 1] Stripe: devid = 1, offset = 850438127616
      No block group.
      No device extent.
  Chunk: start = 66870941646848, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 11474039734272
      [ 1] Stripe: devid = 1, offset = 899830251520
      Block Group: start = 66870941646848, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 66875236614144, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 8512659783680
      [ 1] Stripe: devid = 1, offset = 903051476992
      Block Group: start = 66875236614144, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 66891342741504, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 11492293345280
      [ 1] Stripe: devid = 1, offset = 913788895232
      No block group.
      No device extent.
  Chunk: start = 66913891319808, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 11511620698112
      [ 1] Stripe: devid = 1, offset = 929895022592
      No block group.
      No device extent.
  Chunk: start = 66950398541824, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 11544906694656
      [ 1] Stripe: devid = 4, offset = 953483788288
      No block group.
      Device extent list:
          [ 0]Device extent: devid = 5, start = 11544906694656, len = 1073741824, chunk offset = 66950398541824
  Chunk: start = 66992274472960, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 11582487658496
      [ 1] Stripe: devid = 1, offset = 981434630144
      No block group.
      Device extent list:
          [ 0]Device extent: devid = 5, start = 11582487658496, len = 1073741824, chunk offset = 66992274472960
  Chunk: start = 66994421956608, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 11584635142144
      [ 1] Stripe: devid = 1, offset = 982508371968
      Block Group: start = 66994421956608, len = 1073741824, flag = 11
      Device extent list:
          [ 0]Device extent: devid = 5, start = 11584635142144, len = 1073741824, chunk offset = 66994421956608
  Chunk: start = 67023446540288, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
      [ 0] Stripe: devid = 5, offset = 8393474441216
      [ 1] Stripe: devid = 1, offset = 1002909466624
      Block Group: start = 67023446540288, len = 1073741824, flag = 11
      No device extent.
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Device extent list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      No block group.
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      Stripes list:
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      No block group.
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      Stripes list:
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      No block group.
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      Stripes list:
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      No block group.
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      No device extent.
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      Stripes list:
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      No block group.
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      Stripes list:
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      No block group.
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      Stripes list:
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      No block group.
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      Stripes list:
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      No device extent.
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      Stripes list:
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      No block group.
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      Stripes list:
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      No device extent.
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      Stripes list:
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      No device extent.
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      Stripes list:
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      No device extent.
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      Stripes list:
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      No device extent.
  Chunk: start = 67383150051328, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No device extent.
  Chunk: start = 67384223793152, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No device extent.
  Chunk: start = 67392813727744, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
      No device extent.
  Chunk: start = 67393887469568, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
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  Chunk: start = 67394961211392, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No device extent.
  Chunk: start = 67398182436864, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
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  Chunk: start = 67399256178688, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
      No device extent.
  Chunk: start = 67401403662336, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
      Device extent list:
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  Chunk: start = 67402477404160, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
      Device extent list:
          [ 0]Device extent: devid = 5, start = 8156177498112, len = 1073741824, chunk offset = 67402477404160
  Chunk: start = 67403551145984, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
      Device extent list:
          [ 0]Device extent: devid = 5, start = 11886356594688, len = 1073741824, chunk offset = 67403551145984
  Chunk: start = 67404624887808, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
      Device extent list:
          [ 0]Device extent: devid = 5, start = 11887430336512, len = 1073741824, chunk offset = 67404624887808
  Chunk: start = 67406772371456, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
      Device extent list:
          [ 0]Device extent: devid = 5, start = 11889577820160, len = 1073741824, chunk offset = 67406772371456
  Chunk: start = 67407846113280, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
      Device extent list:
          [ 0]Device extent: devid = 5, start = 11890651561984, len = 1073741824, chunk offset = 67407846113280
  Chunk: start = 67413214822400, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
      No device extent.
  Chunk: start = 67414288564224, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
      No device extent.
  Chunk: start = 67415362306048, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
      No device extent.
  Chunk: start = 67416436047872, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
      No device extent.
  Chunk: start = 67417509789696, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
      No device extent.
  Chunk: start = 67421804756992, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
      No device extent.
  Chunk: start = 67423952240640, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      Block Group: start = 67423952240640, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 67425025982464, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      Block Group: start = 67425025982464, len = 1073741824, flag = 11
      Device extent list:
          [ 0]Device extent: devid = 5, start = 11894946529280, len = 1073741824, chunk offset = 67425025982464
  Chunk: start = 67426099724288, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      Block Group: start = 67426099724288, len = 1073741824, flag = 11
      Device extent list:
          [ 0]Device extent: devid = 5, start = 11896020271104, len = 1073741824, chunk offset = 67426099724288
  Chunk: start = 67427173466112, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      Device extent list:
          [ 0]Device extent: devid = 5, start = 11897094012928, len = 1073741824, chunk offset = 67427173466112
  Chunk: start = 67428247207936, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      Block Group: start = 67428247207936, len = 1073741824, flag = 11
      Device extent list:
          [ 0]Device extent: devid = 5, start = 11898167754752, len = 1073741824, chunk offset = 67428247207936
  Chunk: start = 67429320949760, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      Block Group: start = 67429320949760, len = 1073741824, flag = 11
      Device extent list:
          [ 0]Device extent: devid = 5, start = 11899241496576, len = 1073741824, chunk offset = 67429320949760
  Chunk: start = 67432542175232, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      Block Group: start = 67432542175232, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 67433615917056, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      [ 1] Stripe: devid = 1, offset = 1391604006912
      Block Group: start = 67433615917056, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 67435763400704, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      [ 1] Stripe: devid = 1, offset = 1393751490560
      Block Group: start = 67435763400704, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 67436837142528, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      [ 1] Stripe: devid = 1, offset = 1394825232384
      Block Group: start = 67436837142528, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 67437910884352, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      Block Group: start = 67437910884352, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 67442205851648, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
      No device extent.
  Chunk: start = 67450795786240, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      Block Group: start = 67450795786240, len = 1073741824, flag = 11
      Device extent list:
          [ 0]Device extent: devid = 5, start = 11907831431168, len = 1073741824, chunk offset = 67450795786240
  Chunk: start = 68242143510528, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
      No device extent.
  Chunk: start = 68263618347008, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      [ 1] Stripe: devid = 4, offset = 1185412022272
      No block group.
      No device extent.
  Chunk: start = 68287240667136, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
      No device extent.
  Chunk: start = 68363476336640, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
      No device extent.
  Chunk: start = 68518095159296, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      No block group.
      No device extent.
  Chunk: start = 69067850973184, len = 1073741824, type = 11, num_stripes = 2
      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      No block group.
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      Stripes list:
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      Stripes list:
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      Stripes list:
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      No device extent.
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      Stripes list:
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      Stripes list:
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      No device extent.
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      Stripes list:
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      No device extent.
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      Stripes list:
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      No device extent.
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      Stripes list:
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      No device extent.
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      Stripes list:
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      No device extent.
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      Stripes list:
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      No device extent.
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      Stripes list:
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      No device extent.
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      Stripes list:
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      No device extent.
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      Stripes list:
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      No device extent.
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      Stripes list:
      Block Group: start = 52013542473728, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 52139170267136, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 52139170267136, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 52161718845440, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 52161718845440, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 52182119940096, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 52182119940096, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 52191783616512, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 52191783616512, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 52195004841984, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 52195004841984, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 52261576835072, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 52261576835072, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 52857503547392, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 52857503547392, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 52343181213696, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 52343181213696, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 52345328697344, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 52345328697344, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 54022513426432, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 54022513426432, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 54026808393728, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 54026808393728, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 54027882135552, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 54027882135552, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 54028955877376, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 54028955877376, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 54599112785920, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 54599112785920, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 54600186527744, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 54600186527744, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 54665684779008, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 54665684779008, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 54911571656704, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 54911571656704, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 54927677784064, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 54927677784064, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 54928751525888, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 54928751525888, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 54940562685952, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 54940562685952, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 54941636427776, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 54941636427776, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55017872097280, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55017872097280, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55018945839104, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55018945839104, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55020019580928, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55020019580928, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55086591574016, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55086591574016, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55099476475904, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55099476475904, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55110213894144, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55110213894144, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55111287635968, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55111287635968, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55112361377792, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55112361377792, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55113435119616, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55113435119616, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55115582603264, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55115582603264, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55118803828736, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55118803828736, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55120951312384, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55120951312384, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55122025054208, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55122025054208, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55128467505152, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55128467505152, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55134909956096, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55134909956096, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55145647374336, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55145647374336, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55159606018048, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55159606018048, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55184302080000, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55184302080000, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55189670789120, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55189670789120, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55196113240064, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55196113240064, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55197186981888, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55197186981888, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55198260723712, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55198260723712, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55255169040384, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55255169040384, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55257316524032, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55257316524032, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55258390265856, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55258390265856, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55350732062720, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55350732062720, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55351805804544, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55351805804544, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55371133157376, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55371133157376, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55397976702976, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55397976702976, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55399050444800, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55399050444800, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55410861604864, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55410861604864, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55411935346688, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55411935346688, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55413009088512, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55413009088512, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55414082830336, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55414082830336, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 55551521783808, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 55551521783808, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 50710019899392, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 50710019899392, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 51642027802624, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 51642027802624, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 51645249028096, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 51645249028096, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 51647396511744, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 51647396511744, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 51648470253568, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 51648470253568, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 51650617737216, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 51650617737216, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 51651691479040, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 51651691479040, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 51654912704512, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 51654912704512, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 51655986446336, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 51655986446336, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 51657060188160, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 51657060188160, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 51658133929984, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 51658133929984, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 51662428897280, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 51662428897280, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 50800214212608, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 50800214212608, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 51663502639104, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 51663502639104, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 51664576380928, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 51664576380928, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 51665650122752, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 51665650122752, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 51479892787200, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 51479892787200, len = 1073741824, flag = 11
      No device extent.
  Chunk: start = 51667797606400, len = 1073741824, type = 11, num_stripes = 0
      Stripes list:
      Block Group: start = 51667797606400, len = 1073741824, flag = 11
      No device extent.

Total Chunks:           20011
  Recoverable:          11483
  Unrecoverable:        8528

Orphan Block Groups:

Orphan Device Extents:

corrupt node: root=1 block=77454277943296, nritems too large, have 38 expect range [1,0]
corrupt node: root=1 block=77454277943296, nritems too large, have 38 expect range [1,0]
Couldn't read tree root
open with broken chunk error
Chunk tree recovery failed
#

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