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zfs migration process
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| Create source and target zfs pools for testing | |
| sourcepool is a raidz1 stripe comprised of 4x1GB volumes and targetpool is a single 5GB device | |
| [ root@unknown:/ ] $ zpool create sourcepool raidz1 c1t0d0 c1t1d0 c1t2d0 c1t3d0 | |
| [ root@unknown:/ ] $ zpool create targetpool c1t4d0 | |
| Check pools after creation | |
| [ root@unknown:/ ] $ zpool status -v sourcepool | |
| pool: sourcepool | |
| state: ONLINE | |
| scan: none requested | |
| config: | |
| NAME STATE READ WRITE CKSUM | |
| sourcepool ONLINE 0 0 0 | |
| raidz1-0 ONLINE 0 0 0 | |
| c1t0d0 ONLINE 0 0 0 | |
| c1t1d0 ONLINE 0 0 0 | |
| c1t2d0 ONLINE 0 0 0 | |
| c1t3d0 ONLINE 0 0 0 | |
| errors: No known data errors | |
| [ root@unknown:/ ] $ zpool status -v targetpool | |
| pool: targetpool | |
| state: ONLINE | |
| scan: none requested | |
| config: | |
| NAME STATE READ WRITE CKSUM | |
| targetpool ONLINE 0 0 0 | |
| c1t4d0 ONLINE 0 0 0 | |
| errors: No known data errors | |
| [ root@unknown:/ ] $ zpool status -x | |
| all pools are healthy | |
| [ root@unknown:/ ] $ zpool list | |
| NAME SIZE ALLOC FREE CAP HEALTH ALTROOT | |
| rpool 31.8G 6.11G 25.6G 19% ONLINE - | |
| sourcepool 3.94G 130K 3.94G 0% ONLINE - | |
| targetpool 4.97G 77K 4.97G 0% ONLINE - | |
| [ root@unknown:/ ] $ df -h | |
| Filesystem size used avail capacity Mounted on | |
| rpool/ROOT/s10_1-13 31G 4.1G 25G 15% / | |
| /devices 0K 0K 0K 0% /devices | |
| ctfs 0K 0K 0K 0% /system/contract | |
| proc 0K 0K 0K 0% /proc | |
| mnttab 0K 0K 0K 0% /etc/mnttab | |
| swap 1.4G 356K 1.4G 1% /etc/svc/volatile | |
| objfs 0K 0K 0K 0% /system/object | |
| sharefs 0K 0K 0K 0% /etc/dfs/sharetab | |
| /usr/lib/libc/libc_hwcap2.so.1 | |
| 29G 4.1G 25G 15% /lib/libc.so.1 | |
| fd 0K 0K 0K 0% /dev/fd | |
| swap 1.4G 72K 1.4G 1% /tmp | |
| swap 1.4G 28K 1.4G 1% /var/run | |
| rpool/export 31G 32K 25G 1% /export | |
| rpool/export/home 31G 32K 25G 1% /export/home | |
| rpool 31G 42K 25G 1% /rpool | |
| sourcepool 2.9G 45K 2.9G 1% /sourcepool | |
| targetpool 4.9G 31K 4.9G 1% /targetpool | |
| create source filesystem on sourcepool | |
| [ root@unknown:/ ] $ zfs create sourcepool/fs01 | |
| [ root@unknown:/ ] $ zfs list | |
| NAME USED AVAIL REFER MOUNTPOINT | |
| rpool 6.23G 25.0G 42.5K /rpool | |
| rpool/ROOT 4.16G 25.0G 31K legacy | |
| rpool/ROOT/s10_1-13 4.16G 25.0G 4.16G / | |
| rpool/dump 1.00G 25.0G 1.00G - | |
| rpool/export 64K 25.0G 32K /export | |
| rpool/export/home 32K 25.0G 32K /export/home | |
| rpool/swap 1.06G 25.1G 1.00G - | |
| sourcepool 254K 2.90G 44.9K /sourcepool | |
| sourcepool/fs01 44.9K 2.90G 44.9K /sourcepool/fs01 | |
| targetpool 97K 4.89G 31K /targetpool | |
| [ root@unknown:/ ] $ df -h | |
| Filesystem size used avail capacity Mounted on | |
| rpool/ROOT/s10_1-13 31G 4.2G 25G 15% / | |
| /devices 0K 0K 0K 0% /devices | |
| ctfs 0K 0K 0K 0% /system/contract | |
| proc 0K 0K 0K 0% /proc | |
| mnttab 0K 0K 0K 0% /etc/mnttab | |
| swap 1.0G 356K 1.0G 1% /etc/svc/volatile | |
| objfs 0K 0K 0K 0% /system/object | |
| sharefs 0K 0K 0K 0% /etc/dfs/sharetab | |
| /usr/lib/libc/libc_hwcap2.so.1 | |
| 29G 4.2G 25G 15% /lib/libc.so.1 | |
| fd 0K 0K 0K 0% /dev/fd | |
| swap 1.0G 72K 1.0G 1% /tmp | |
| swap 1.0G 28K 1.0G 1% /var/run | |
| rpool/export 31G 32K 25G 1% /export | |
| rpool/export/home 31G 32K 25G 1% /export/home | |
| rpool 31G 42K 25G 1% /rpool | |
| sourcepool 2.9G 45K 2.9G 1% /sourcepool | |
| targetpool 4.9G 31K 4.9G 1% /targetpool | |
| sourcepool/fs01 2.9G 45K 2.9G 1% /sourcepool/fs01 | |
| [ root@unknown:/ ] $ | |
| create some dummy data on fs01 | |
| [ root@unknown:/ ] $ cd /sourcepool/fs01/ | |
| [ root@unknown:/sourcepool/fs01 ] $ ls -al | |
| total 8 | |
| drwxr-xr-x 2 root root 2 Nov 17 19:44 . | |
| drwxr-xr-x 3 root root 3 Nov 17 19:44 .. | |
| [ root@unknown:/sourcepool/fs01 ] $ touch {a..z} | |
| [ root@unknown:/sourcepool/fs01 ] $ ls -al | |
| total 34 | |
| drwxr-xr-x 2 root root 28 Nov 17 19:45 . | |
| drwxr-xr-x 3 root root 3 Nov 17 19:44 .. | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 a | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 b | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 c | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 d | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 e | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 f | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 g | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 h | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 i | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 j | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 k | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 l | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 m | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 n | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 o | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 p | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 q | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 r | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 s | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 t | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 u | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 v | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 w | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 x | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 y | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 z | |
| [ root@unknown:/sourcepool/fs01 ] $ | |
| Install pipe view so you can monitor transfer status | |
| pkgadd -d http://get.opencsw.org/now | |
| /opt/csw/bin/pkgutil -U | |
| /opt/csw/bin/pkgutil -y -i pv | |
| /usr/sbin/pkgchk -L CSWpv # list files | |
| /opt/csw/bin/pv | |
| Migration Process | |
| This process allows for incrmental syncronoization. Applications can stay up until the final snapshot and sync. | |
| Inital Sync | |
| Take snashot | |
| [ root@unknown:/ ] $ zfs snapshot sourcepool/fs01@snapshot01 | |
| [ root@unknown:/ ] $ zfs list -t snapshot | |
| NAME USED AVAIL REFER MOUNTPOINT | |
| sourcepool/sourcefs01@snapshot01 0 - 49.4K - | |
| Sync | |
| [ root@unknown:/ ] $ zfs send sourcepool/fs01@snapshot01 | /opt/csw/bin/pv | zfs receive targetpool/fs01 | |
| 76.1KiB 0:00:00 [ 1.5MiB/s] [ <=> ] | |
| [ root@unknown:/ ] $ | |
| After the sync you will see the fs01 appear in the targetpool | |
| [ root@unknown:/ ] $ df -h | |
| Filesystem size used avail capacity Mounted on | |
| rpool/ROOT/s10_1-13 31G 4.2G 25G 15% / | |
| /devices 0K 0K 0K 0% /devices | |
| ctfs 0K 0K 0K 0% /system/contract | |
| proc 0K 0K 0K 0% /proc | |
| mnttab 0K 0K 0K 0% /etc/mnttab | |
| swap 1.0G 356K 1.0G 1% /etc/svc/volatile | |
| objfs 0K 0K 0K 0% /system/object | |
| sharefs 0K 0K 0K 0% /etc/dfs/sharetab | |
| /usr/lib/libc/libc_hwcap2.so.1 | |
| 29G 4.2G 25G 15% /lib/libc.so.1 | |
| fd 0K 0K 0K 0% /dev/fd | |
| swap 1.0G 72K 1.0G 1% /tmp | |
| swap 1.0G 28K 1.0G 1% /var/run | |
| rpool/export 31G 32K 25G 1% /export | |
| rpool/export/home 31G 32K 25G 1% /export/home | |
| rpool 31G 42K 25G 1% /rpool | |
| sourcepool 2.9G 49K 2.9G 1% /sourcepool | |
| targetpool 4.9G 32K 4.9G 1% /targetpool | |
| sourcepool/fs01 2.9G 49K 2.9G 1% /sourcepool/fs01 | |
| targetpool/fs01 4.9G 34K 4.9G 1% /targetpool/fs01 | |
| [ root@unknown:/ ] $ zfs list | |
| NAME USED AVAIL REFER MOUNTPOINT | |
| rpool 6.23G 25.0G 42.5K /rpool | |
| rpool/ROOT 4.16G 25.0G 31K legacy | |
| rpool/ROOT/s10_1-13 4.16G 25.0G 4.16G / | |
| rpool/dump 1.00G 25.0G 1.00G - | |
| rpool/export 64K 25.0G 32K /export | |
| rpool/export/home 32K 25.0G 32K /export/home | |
| rpool/swap 1.06G 25.1G 1.00G - | |
| sourcepool 163K 2.90G 49.4K /sourcepool | |
| sourcepool/fs01 49.4K 2.90G 49.4K /sourcepool/fs01 | |
| sourcepool/fs01@snapshot01 0 - 49.4K - | |
| targetpool 140K 4.89G 32K /targetpool | |
| targetpool/fs01 34K 4.89G 34K /targetpool/fs01 | |
| targetpool/fs01@snapshot01 0 - 34K - | |
| [ root@unknown:/ ] $ | |
| Cutover | |
| Shutdown all applications | |
| Unmount source filesystem(s) | |
| Note: Be sure you are not in the filesystem you are trying to unmount | |
| [ root@unknown:/ ] $ zfs umount sourcepool/fs01 | |
| [ root@unknown:/ ] $ df -h | |
| Filesystem size used avail capacity Mounted on | |
| rpool/ROOT/s10_1-13 31G 4.2G 25G 15% / | |
| /devices 0K 0K 0K 0% /devices | |
| ctfs 0K 0K 0K 0% /system/contract | |
| proc 0K 0K 0K 0% /proc | |
| mnttab 0K 0K 0K 0% /etc/mnttab | |
| swap 1017M 356K 1017M 1% /etc/svc/volatile | |
| objfs 0K 0K 0K 0% /system/object | |
| sharefs 0K 0K 0K 0% /etc/dfs/sharetab | |
| /usr/lib/libc/libc_hwcap2.so.1 | |
| 29G 4.2G 25G 15% /lib/libc.so.1 | |
| fd 0K 0K 0K 0% /dev/fd | |
| swap 1017M 72K 1017M 1% /tmp | |
| swap 1017M 28K 1017M 1% /var/run | |
| rpool/export 31G 32K 25G 1% /export | |
| rpool/export/home 31G 32K 25G 1% /export/home | |
| rpool 31G 42K 25G 1% /rpool | |
| sourcepool 2.9G 49K 2.9G 1% /sourcepool | |
| targetpool 4.9G 32K 4.9G 1% /targetpool | |
| targetpool/fs01 4.9G 34K 4.9G 1% /targetpool/fs01 | |
| [ root@unknown:/ ] $ | |
| take new snapshot | |
| [ root@unknown:/ ] $ zfs snapshot sourcepool/fs01@snapshot02 | |
| [ root@unknown:/ ] $ zfs list -t snapshot | |
| NAME USED AVAIL REFER MOUNTPOINT | |
| sourcepool/fs01@snapshot01 28.4K - 49.4K - | |
| sourcepool/fs01@snapshot02 0 - 49.4K - | |
| targetpool/fs01@snapshot01 0 - 34K - | |
| [ root@unknown:/ ] $ | |
| Sync incremental differences between two snapshots | |
| [ root@unknown:/ ] $ zfs send -i sourcepool/fs01@snapshot01 sourcepool/fs01@snapshot02 | /opt/csw/bin/pv | zfs receive targetpool/fs01 | |
| 33.2KiB 0:00:00 [ 679KiB/s] [ <=> ] | |
| [ root@unknown:/ ] $ | |
| Make targetpool the sourcepool | |
| Export sourepool and targetpool | |
| [ root@unknown:/ ] $ zpool export sourcepool | |
| [ root@unknown:/ ] $ zpool status -v | |
| pool: rpool | |
| state: ONLINE | |
| scan: none requested | |
| config: | |
| NAME STATE READ WRITE CKSUM | |
| rpool ONLINE 0 0 0 | |
| c0d0s0 ONLINE 0 0 0 | |
| errors: No known data errors | |
| pool: targetpool | |
| state: ONLINE | |
| scan: none requested | |
| config: | |
| NAME STATE READ WRITE CKSUM | |
| targetpool ONLINE 0 0 0 | |
| c1t4d0 ONLINE 0 0 0 | |
| errors: No known data errors | |
| [ root@unknown:/ ] $ zpool export targetpool | |
| [ root@unknown:/ ] $ zpool status -v | |
| pool: rpool | |
| state: ONLINE | |
| scan: none requested | |
| config: | |
| NAME STATE READ WRITE CKSUM | |
| rpool ONLINE 0 0 0 | |
| c0d0s0 ONLINE 0 0 0 | |
| errors: No known data errors | |
| [ root@unknown:/ ] $ | |
| List pools available for import | |
| [ root@unknown:/ ] $ zpool import | |
| pool: targetpool | |
| id: 6974299001134861399 | |
| state: ONLINE | |
| action: The pool can be imported using its name or numeric identifier. | |
| config: | |
| targetpool ONLINE | |
| c1t4d0 ONLINE | |
| pool: sourcepool | |
| id: 16188486505158652390 | |
| state: ONLINE | |
| action: The pool can be imported using its name or numeric identifier. | |
| config: | |
| sourcepool ONLINE | |
| raidz1-0 ONLINE | |
| c1t0d0 ONLINE | |
| c1t1d0 ONLINE | |
| c1t2d0 ONLINE | |
| c1t3d0 ONLINE | |
| import original sourcepool as old_sourcepool | |
| [ root@unknown:/ ] $ zpool import sourcepool old_sourcepool | |
| import targetpool as sourcepool | |
| [ root@unknown:/ ] $ zpool import targetpool sourcepool | |
| validate pool swap | |
| [ root@unknown:/ ] $ zpool status -v | |
| pool: old_sourcepool | |
| state: ONLINE | |
| scan: none requested | |
| config: | |
| NAME STATE READ WRITE CKSUM | |
| old_sourcepool ONLINE 0 0 0 | |
| raidz1-0 ONLINE 0 0 0 | |
| c1t0d0 ONLINE 0 0 0 | |
| c1t1d0 ONLINE 0 0 0 | |
| c1t2d0 ONLINE 0 0 0 | |
| c1t3d0 ONLINE 0 0 0 | |
| errors: No known data errors | |
| pool: rpool | |
| state: ONLINE | |
| scan: none requested | |
| config: | |
| NAME STATE READ WRITE CKSUM | |
| rpool ONLINE 0 0 0 | |
| c0d0s0 ONLINE 0 0 0 | |
| errors: No known data errors | |
| pool: sourcepool | |
| state: ONLINE | |
| scan: none requested | |
| config: | |
| NAME STATE READ WRITE CKSUM | |
| sourcepool ONLINE 0 0 0 | |
| c1t4d0 ONLINE 0 0 0 | |
| errors: No known data errors | |
| [ root@unknown:/ ] $ | |
| snapshots intact | |
| [ root@unknown:/ ] $ zfs list -t snapshot | |
| NAME USED AVAIL REFER MOUNTPOINT | |
| old_sourcepool/fs01@snapshot01 28.4K - 49.4K - | |
| old_sourcepool/fs01@snapshot02 0 - 49.4K - | |
| sourcepool/fs01@snapshot01 19K - 34K - | |
| sourcepool/fs01@snapshot02 0 - 34K - | |
| [ root@unknown:/ ] $ | |
| devices mounted | |
| [ root@unknown:/ ] $ df -h | |
| Filesystem size used avail capacity Mounted on | |
| rpool/ROOT/s10_1-13 31G 4.2G 25G 15% / | |
| /devices 0K 0K 0K 0% /devices | |
| ctfs 0K 0K 0K 0% /system/contract | |
| proc 0K 0K 0K 0% /proc | |
| mnttab 0K 0K 0K 0% /etc/mnttab | |
| swap 1014M 356K 1013M 1% /etc/svc/volatile | |
| objfs 0K 0K 0K 0% /system/object | |
| sharefs 0K 0K 0K 0% /etc/dfs/sharetab | |
| /usr/lib/libc/libc_hwcap2.so.1 | |
| 29G 4.2G 25G 15% /lib/libc.so.1 | |
| fd 0K 0K 0K 0% /dev/fd | |
| swap 1013M 72K 1013M 1% /tmp | |
| swap 1013M 28K 1013M 1% /var/run | |
| rpool/export 31G 32K 25G 1% /export | |
| rpool/export/home 31G 32K 25G 1% /export/home | |
| rpool 31G 42K 25G 1% /rpool | |
| old_sourcepool 2.9G 49K 2.9G 1% /old_sourcepool | |
| old_sourcepool/fs01 2.9G 49K 2.9G 1% /old_sourcepool/fs01 | |
| sourcepool 4.9G 32K 4.9G 1% /sourcepool | |
| sourcepool/fs01 4.9G 34K 4.9G 1% /sourcepool/fs01 | |
| [ root@unknown:/ ] $ zfs list | |
| NAME USED AVAIL REFER MOUNTPOINT | |
| old_sourcepool 211K 2.90G 49.4K /old_sourcepool | |
| old_sourcepool/fs01 77.8K 2.90G 49.4K /old_sourcepool/fs01 | |
| old_sourcepool/fs01@snapshot01 28.4K - 49.4K - | |
| old_sourcepool/fs01@snapshot02 0 - 49.4K - | |
| rpool 6.24G 25.0G 42.5K /rpool | |
| rpool/ROOT 4.17G 25.0G 31K legacy | |
| rpool/ROOT/s10_1-13 4.17G 25.0G 4.17G / | |
| rpool/dump 1.00G 25.0G 1.00G - | |
| rpool/export 64K 25.0G 32K /export | |
| rpool/export/home 32K 25.0G 32K /export/home | |
| rpool/swap 1.06G 25.1G 1.00G - | |
| sourcepool 187K 4.89G 32K /sourcepool | |
| sourcepool/fs01 53K 4.89G 34K /sourcepool/fs01 | |
| sourcepool/fs01@snapshot01 19K - 34K - | |
| sourcepool/fs01@snapshot02 0 - 34K - | |
| [ root@unknown:/ ] $ | |
| data intact | |
| [ root@unknown:/ ] $ cd /sourcepool/fs01/ | |
| [ root@unknown:/sourcepool/fs01 ] $ ls -al | |
| total 32 | |
| drwxr-xr-x 2 root root 28 Nov 17 19:45 . | |
| drwxr-xr-x 3 root root 3 Nov 17 19:49 .. | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 a | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 b | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 c | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 d | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 e | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 f | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 g | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 h | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 i | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 j | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 k | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 l | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 m | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 n | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 o | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 p | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 q | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 r | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 s | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 t | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 u | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 v | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 w | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 x | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 y | |
| -rw-r--r-- 1 root root 0 Nov 17 19:45 z | |
| [ root@unknown:/sourcepool/fs01 ] $ | |
| Should now be able to restart applications. | |
| Last step is to cleanup and remove old zpool when confident that all is good. | |
| Snapshot cleanup | |
| [ root@unknown:/sourcepool/fs01 ] $ zfs list -t snapshot | |
| NAME USED AVAIL REFER MOUNTPOINT | |
| old_sourcepool/fs01@snapshot01 28.4K - 49.4K - | |
| old_sourcepool/fs01@snapshot02 0 - 49.4K - | |
| sourcepool/fs01@snapshot01 19K - 34K - | |
| sourcepool/fs01@snapshot02 0 - 34K - | |
| [ root@unknown:/sourcepool/fs01 ] $ zfs destroy old_sourcepool/fs01@snapshot01 | |
| [ root@unknown:/sourcepool/fs01 ] $ zfs destroy old_sourcepool/fs01@snapshot02 | |
| [ root@unknown:/sourcepool/fs01 ] $ zfs destroy sourcepool/fs01@snapshot01 | |
| [ root@unknown:/sourcepool/fs01 ] $ zfs destroy sourcepool/fs01@snapshot02 | |
| [ root@unknown:/sourcepool/fs01 ] $ zfs list -t snapshot | |
| no datasets available | |
| [ root@unknown:/sourcepool/fs01 ] $ | |
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