Created
April 5, 2020 05:26
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Convert a zpool from mirror/stripe (raid 10) to 3-way mirror
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| # zpool create tank mirror /var/tmp/f1 /var/tmp/f2 mirror /var/tmp/f3 /var/tmp/f4 | |
| # zpool list tank | |
| NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT | |
| tank 1.88G 1.36M 1.87G - - 0% 0% 1.00x ONLINE - | |
| # zpool status tank | |
| pool: tank | |
| state: ONLINE | |
| scan: none requested | |
| config: | |
| NAME STATE READ WRITE CKSUM | |
| tank ONLINE 0 0 0 | |
| mirror-0 ONLINE 0 0 0 | |
| /var/tmp/f1 ONLINE 0 0 0 | |
| /var/tmp/f2 ONLINE 0 0 0 | |
| mirror-1 ONLINE 0 0 0 | |
| /var/tmp/f3 ONLINE 0 0 0 | |
| /var/tmp/f4 ONLINE 0 0 0 | |
| errors: No known data errors | |
| # zpool remove tank mirror-1 | |
| # zpool list tank | |
| NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT | |
| tank 960M 1.55M 958M - - 0% 0% 1.00x ONLINE - | |
| # zpool status tank | |
| pool: tank | |
| state: ONLINE | |
| scan: none requested | |
| remove: Removal of vdev 1 copied 498K in 0h0m, completed on Sun Apr 5 05:23:58 2020 | |
| 192 memory used for removed device mappings | |
| config: | |
| NAME STATE READ WRITE CKSUM | |
| tank ONLINE 0 0 0 | |
| mirror-0 ONLINE 0 0 0 | |
| /var/tmp/f1 ONLINE 0 0 0 | |
| /var/tmp/f2 ONLINE 0 0 0 | |
| errors: No known data errors | |
| # zpool attach tank /var/tmp/f2 /var/tmp/f3 | |
| # zpool list tank | |
| NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT | |
| tank 960M 639K 959M - - 0% 0% 1.00x ONLINE - | |
| # zpool status tank | |
| pool: tank | |
| state: ONLINE | |
| scan: resilvered 1.37M in 0 days 00:00:00 with 0 errors on Sun Apr 5 05:24:16 2020 | |
| remove: Removal of vdev 1 copied 498K in 0h0m, completed on Sun Apr 5 05:23:58 2020 | |
| 192 memory used for removed device mappings | |
| config: | |
| NAME STATE READ WRITE CKSUM | |
| tank ONLINE 0 0 0 | |
| mirror-0 ONLINE 0 0 0 | |
| /var/tmp/f1 ONLINE 0 0 0 | |
| /var/tmp/f2 ONLINE 0 0 0 | |
| /var/tmp/f3 ONLINE 0 0 0 | |
| errors: No known data errors |
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