pwaller
/ ktrace.log
Created
July 30, 2014 10:35
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| [1093202.136107] INFO: task kworker/u30:1:31455 blocked for more than 120 seconds. | |
| [1093202.141596] Tainted: GF 3.13.0-30-generic #54-Ubuntu | |
| [1093202.146201] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. | |
| [1093202.152408] kworker/u30:1 D ffff8801efc34440 0 31455 2 0x00000000 | |
| [1093202.152416] Workqueue: writeback bdi_writeback_workfn (flush-btrfs-1) | |
| [1093202.152419] ffff880040d3b768 0000000000000002 ffff8800880f0000 ffff880040d3bfd8 | |
| [1093202.152422] 0000000000014440 0000000000014440 ffff8800880f0000 ffff8801efc34cd8 | |
| [1093202.152426] ffff8801effcefe8 ffff880040d3b7f0 0000000000000002 ffffffff8114e010 | |
| [1093202.152429] Call Trace: | |
| [1093202.152435] [<ffffffff8114e010>] ? wait_on_page_read+0x60/0x60 |
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| [ 0.000000] Initializing cgroup subsys cpuset | |
| [ 0.000000] Initializing cgroup subsys cpu | |
| [ 0.000000] Initializing cgroup subsys cpuacct | |
| [ 0.000000] Linux version 3.13.0-32-generic (buildd@kissel) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) ) #57-Ubuntu SMP Tue Jul 15 03:51:08 UTC 2014 (Ubuntu 3.13.0-32.57-generic 3.13.11.4) | |
| [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic root=UUID=4697912e-36da-461d-af10-db7088461d31 ro console=tty1 console=ttyS0 | |
| [ 0.000000] KERNEL supported cpus: | |
| [ 0.000000] Intel GenuineIntel | |
| [ 0.000000] AMD AuthenticAMD | |
| [ 0.000000] Centaur CentaurHauls | |
| [ 0.000000] e820: BIOS-provided physical RAM map: |
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| time |usr sys idl wai hiq siq| read writ| recv send| int csw | used buff cach free| 1m 5m 15m | read writ [1/1512] | |
| 01-08 11:35:28| 0 99 0 0 0 0| 0 390k| 166B 1141B| 215 103 | 369M 35.5M 3208M 153M|4.93 4.78 4.47| 0 37.8 | |
| 01-08 11:35:33| 1 99 0 0 0 0| 0 269k| 666B 4171B| 245 112 | 369M 35.5M 3208M 153M|4.85 4.77 4.46| 0 64.4 | |
| 01-08 11:35:38| 1 99 0 0 0 0| 0 3277B|1255B 7771B| 216 128 | 369M 35.5M 3208M 153M|4.78 4.75 4.46| 0 0.80 | |
| 01-08 11:35:43| 1 99 0 0 0 0| 0 4915B|1383B 8931B| 215 128 | 369M 35.5M 3208M 153M|4.80 4.76 4.47| 0 0.80 | |
| 01-08 11:35:48| 1 99 0 0 0 0| 0 1638B| 322B 2837B| 198 83 | 369M 35.5M 3208M 153M|4.82 4.76 4.47| 0 0.40 | |
| 01-08 11:35:53| 1 99 0 0 0 0| 0 0 | 198B 3542B| 193 83 | 369M 35.5M 3208M 153M|4.83 4.77 4.47| 0 0 | |
| 01-08 11:35:58| 1 99 0 0 0 0| 0 0 | 517B 3528B| 199 106 | 369M 35.5M 3208M 153M|4.77 4.75 4.47| 0 |
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| $ cat 202\:5120/stats 252\:0/stats | |
| BdiWriteback: 0 kB | |
| BdiReclaimable: 0 kB | |
| BdiDirtyThresh: 0 kB | |
| DirtyThresh: 712460 kB | |
| BackgroundThresh: 356228 kB | |
| BdiDirtied: 0 kB | |
| BdiWritten: 0 kB | |
| BdiWriteBandwidth: 102400 kBps | |
| b_dirty: 0 |
pwaller
/ btrfs-stack-traces
Created
August 5, 2014 09:33
Stack traces from btrfs during a rebalance
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| [576705.255778] ------------[ cut here ]------------ | |
| [576705.255801] WARNING: CPU: 1 PID: 13749 at /home/apw/COD/linux/fs/btrfs/extent-tree.c:6946 use_block_rsv+0xfd/0x1a0 [btrfs]() | |
| [576705.255803] BTRFS: block rsv returned -28 | |
| [576705.255804] Modules linked in: ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c softdog tcp_diag inet_diag dm_crypt ppdev xen_fbfront fb_sys_fops syscopyarea sysfillrect sysimgblt i2c_piix4 serio_raw parport_pc parport mac_hid isofs xt_tcpudp iptable_filter xt_owner ip_tables x_tables btrfs xor raid6_pq crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd floppy psmouse | |
| [576705.255834] CPU: 1 PID: 13749 Comm: kworker/u30:0 Tainted: G W 3.15.7-031507-generic #201407281235 | |
| [576705.255836] Hardware name: Xen HVM domU, BIOS 4.2.amazon 05/23/2014 | |
| [576705.255851] Workqueue: btrfs-endio-write normal_work_helper [btrfs] | |
| [576705.255853] 0000000000001b22 ffff8801111b7958 ffffffff8176f115 0000000000000007 | |
| [5767 |
pwaller
/ gist:66d906976e059f41233e
Created
December 10, 2014 13:48
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| set nu | |
| filetype off | |
| filetype plugin indent off | |
| set runtimepath+=~/.local/vim-golang | |
| filetype plugin indent on | |
| syntax on | |
| set smartindent | |
| set tabstop=4 |
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| // Note: doesn't work yet. | |
| // Note: you may wish to modify the hard-coded region from eu-west-1. | |
| package main | |
| import ( | |
| "io" | |
| "log" | |
| "os" |
pwaller
/ truncate_prefix.go
Last active
August 29, 2015 14:11
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| package main | |
| import ( | |
| "bufio" | |
| "io" | |
| "os" | |
| ) | |
| func main() { | |
| TruncateFilePrefix("tmp.txt") |
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| $ novm create --nofork | |
| 2015/01/10 13:32:00 Creating devices... | |
| 2015/01/10 13:32:00 Loading d25d0c01-9b5b-44aa-9261-a5f3340908e2... | |
| 2015/01/10 13:32:00 Loading 37f7a2a4-6085-4665-83f1-4568d62853ea... | |
| 2015/01/10 13:32:00 Loading 1ec1015b-82b7-4d74-819a-40a4865a9524... | |
| 2015/01/10 13:32:00 Loading 787da28e-6d86-42a4-bc53-34ac06bd8869... | |
| 2015/01/10 13:32:00 Loading 2730ad5a-8391-4481-b6f0-b3feb95e9614... | |
| 2015/01/10 13:32:00 Loading 3b79eac7-b4b6-4646-8602-53a65c484ce7... | |
| 2015/01/10 13:32:00 Loading 38e58a57-f34a-4571-9141-a67a82ef7c1d... | |
| 2015/01/10 13:32:00 Loading afd265ae-3461-4d73-b700-0ae439b0c97a... |
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| FROM ubuntu:14.04 | |
| RUN apt-get update && apt-get install -y curl build-essential git mercurial upx | |
| RUN curl -sSL https://golang.org/dl/go1.4.src.tar.gz | tar -v -C /usr/local -xz | |
| RUN cd /usr/local/go/src && ./make.bash --no-clean 2>&1 | |
| ENV GOPATH /go | |
| ENV PATH /usr/local/go/bin:$PATH | |
| ENV PATH /go/bin:$PATH |