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How do I upgrade and keep my ZFS pools on Ubuntu Server?
Ubuntu + ZFS: How to migrate entire system to new disks?Native ZFS Configuration on Ubuntuglibc conundrum - how to undo partial upgrade?grub: Booting Ubuntu off /boot in LVM, broken after upgradeSlow performance due to txg_sync for ZFS 0.6.3 on Ubuntu 14.04How to import a child of a broken zpool mirror on a different host?JBOD server for ZFS without dedicated boot driveUbuntu Xenial (16.04) “zfs share” command doesn't work for SMB sharesGetting Ubuntu 16.04 on a ZFS root on a Hetzner dedicated serverWhy does /dev/disk/by-id directory have cdrom device only and which one of /dev/disk/by-X is recommended for creating zfs pools?
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I have a server running the 4-year-old Ubuntu 12.04 LTS with zfsonlinux installed on the machine with a 1.5TB mirrored drive setup. The Ubuntu 16.04 LTS has no upgrade path, so I'll have to reimage the boot drive, but it has native support for ZFS.
What do I need to do during the upgrade to make sure the pools are still accessible on the upgraded machine?
ubuntu zfs zfsonlinux
asked Apr 20 '16 at 5:46
RikingRiking
1114
add a comment |
I have a server running the 4-year-old Ubuntu 12.04 LTS with zfsonlinux installed on the machine with a 1.5TB mirrored drive setup. The Ubuntu 16.04 LTS has no upgrade path, so I'll have to reimage the boot drive, but it has native support for ZFS.
What do I need to do during the upgrade to make sure the pools are still accessible on the upgraded machine?
ubuntu zfs zfsonlinux
asked Apr 20 '16 at 5:46
RikingRiking
1114
add a comment |
I have a server running the 4-year-old Ubuntu 12.04 LTS with zfsonlinux installed on the machine with a 1.5TB mirrored drive setup. The Ubuntu 16.04 LTS has no upgrade path, so I'll have to reimage the boot drive, but it has native support for ZFS.
What do I need to do during the upgrade to make sure the pools are still accessible on the upgraded machine?
ubuntu zfs zfsonlinux
asked Apr 20 '16 at 5:46
RikingRiking
1114
I have a server running the 4-year-old Ubuntu 12.04 LTS with zfsonlinux installed on the machine with a 1.5TB mirrored drive setup. The Ubuntu 16.04 LTS has no upgrade path, so I'll have to reimage the boot drive, but it has native support for ZFS.
What do I need to do during the upgrade to make sure the pools are still accessible on the upgraded machine?
ubuntu zfs zfsonlinux
ubuntu zfs zfsonlinux
asked Apr 20 '16 at 5:46
RikingRiking
1114
asked Apr 20 '16 at 5:46
RikingRiking
1114
asked Apr 20 '16 at 5:46
RikingRiking
1114
asked Apr 20 '16 at 5:46
RikingRiking
1114
asked Apr 20 '16 at 5:46
RikingRiking
1114
1114
add a comment |
add a comment |
1 Answer
1
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In general, older pool versions can be read by newer systems, but not the other way round (that is, after you do a zpool upgrade on your pool, you cannot go back without destroying the whole pool).
Therefore, I would first try the simple approach:
- Do a full backup and test if you can go back to that backup without problems.
- Remove any log or cache devices from the pool if you have them attached.
- Stop all input/output on the pool, for example network sharing services.
zpool exportthe pool.- Shutdown the system, swap one or two discs over to the new one.*
- Install your base system on another disk.
zpool importthe pool.- Optionally, add the second disk if you only added one and wait for the resilver to complete.
*) In theory, you would always swap both disks because you have a working backup anyways. I just like the peace of mind to always have another working disk in the old system, should I mess anything up. Much faster to go back this way than with backups, and the chance that a bitflip occurs in the 5 minutes between swapping is minimal.
answered Apr 20 '16 at 6:56
user121391user121391
1,862625
add a comment |
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1 Answer
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1 Answer
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votes
In general, older pool versions can be read by newer systems, but not the other way round (that is, after you do a zpool upgrade on your pool, you cannot go back without destroying the whole pool).
Therefore, I would first try the simple approach:
- Do a full backup and test if you can go back to that backup without problems.
- Remove any log or cache devices from the pool if you have them attached.
- Stop all input/output on the pool, for example network sharing services.
zpool exportthe pool.- Shutdown the system, swap one or two discs over to the new one.*
- Install your base system on another disk.
zpool importthe pool.- Optionally, add the second disk if you only added one and wait for the resilver to complete.
*) In theory, you would always swap both disks because you have a working backup anyways. I just like the peace of mind to always have another working disk in the old system, should I mess anything up. Much faster to go back this way than with backups, and the chance that a bitflip occurs in the 5 minutes between swapping is minimal.
answered Apr 20 '16 at 6:56
user121391user121391
1,862625
add a comment |
In general, older pool versions can be read by newer systems, but not the other way round (that is, after you do a zpool upgrade on your pool, you cannot go back without destroying the whole pool).
Therefore, I would first try the simple approach:
- Do a full backup and test if you can go back to that backup without problems.
- Remove any log or cache devices from the pool if you have them attached.
- Stop all input/output on the pool, for example network sharing services.
zpool exportthe pool.- Shutdown the system, swap one or two discs over to the new one.*
- Install your base system on another disk.
zpool importthe pool.- Optionally, add the second disk if you only added one and wait for the resilver to complete.
*) In theory, you would always swap both disks because you have a working backup anyways. I just like the peace of mind to always have another working disk in the old system, should I mess anything up. Much faster to go back this way than with backups, and the chance that a bitflip occurs in the 5 minutes between swapping is minimal.
answered Apr 20 '16 at 6:56
user121391user121391
1,862625
add a comment |
In general, older pool versions can be read by newer systems, but not the other way round (that is, after you do a zpool upgrade on your pool, you cannot go back without destroying the whole pool).
Therefore, I would first try the simple approach:
- Do a full backup and test if you can go back to that backup without problems.
- Remove any log or cache devices from the pool if you have them attached.
- Stop all input/output on the pool, for example network sharing services.
zpool exportthe pool.- Shutdown the system, swap one or two discs over to the new one.*
- Install your base system on another disk.
zpool importthe pool.- Optionally, add the second disk if you only added one and wait for the resilver to complete.
*) In theory, you would always swap both disks because you have a working backup anyways. I just like the peace of mind to always have another working disk in the old system, should I mess anything up. Much faster to go back this way than with backups, and the chance that a bitflip occurs in the 5 minutes between swapping is minimal.
answered Apr 20 '16 at 6:56
user121391user121391
1,862625
In general, older pool versions can be read by newer systems, but not the other way round (that is, after you do a zpool upgrade on your pool, you cannot go back without destroying the whole pool).
Therefore, I would first try the simple approach:
- Do a full backup and test if you can go back to that backup without problems.
- Remove any log or cache devices from the pool if you have them attached.
- Stop all input/output on the pool, for example network sharing services.
zpool exportthe pool.- Shutdown the system, swap one or two discs over to the new one.*
- Install your base system on another disk.
zpool importthe pool.- Optionally, add the second disk if you only added one and wait for the resilver to complete.
*) In theory, you would always swap both disks because you have a working backup anyways. I just like the peace of mind to always have another working disk in the old system, should I mess anything up. Much faster to go back this way than with backups, and the chance that a bitflip occurs in the 5 minutes between swapping is minimal.
answered Apr 20 '16 at 6:56
user121391user121391
1,862625
answered Apr 20 '16 at 6:56
user121391user121391
1,862625
answered Apr 20 '16 at 6:56
user121391user121391
1,862625
answered Apr 20 '16 at 6:56
user121391user121391
1,862625
1,862625
add a comment |
add a comment |
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