[SOLVED] Expand zfs pool without loosing data

[ioanv]

Hi all

I've installed a PBS server to test the features and I've used 3 x 2TB drives in a RAID5 configuration.
Everything went OK so I've decided to also test failed drives and I've replaced each drive one by one with 3 x 6TB drives resilvering in between.

Is there a way to expand the existing pool in order to use the additional space?

Thanks

Kind regards
Vlad

 

[bobmc]

zpool set autoexpand=on <name of pool>

 

[ioanv]

zpool set autoexpand=on <name of pool>

Thanks, bobmc. I've done that. Do I need to run anything else to commit the changes?

 

[bobmc]

Ideally, this should have been set=on before resilvering the last 6TB drive. You may get away with doing a zpool export/zpool import to trigger the resize

 

[ioanv]

Ideally, this should have been set=on before resilvering the last 6TB drive. You may get away with doing a zpool export/zpool import to trigger the resize

Nope, export and import did not do the job.

 

[janssensm]

From man zpool:

     zpool online [-e] pool device...
             Brings the specified physical device online.  This command is not applicable to spares.

             -e      Expand the device to use all available space.  If the device is part of a mirror or raidz then all devices must be expanded before the new space will
                     become available to the pool.

Also, perhaps posting your zpool status and zpool list -v can be helpful, because you speak about raid5

 

[ioanv]

From man zpool:

     zpool online [-e] pool device...
             Brings the specified physical device online.  This command is not applicable to spares.

             -e      Expand the device to use all available space.  If the device is part of a mirror or raidz then all devices must be expanded before the new space will
                     become available to the pool.

Also, perhaps posting your zpool status can be helpful, because you speak about raid5

Hi

Thanks for your reply. Here is the output:

root@proxbackup:~# zpool status
pool: zfsbkp
state: ONLINE
scan: resilvered 1.53T in 0 days 04:05:44 with 0 errors on Mon Mar 22 19:57:49 2021
config:

NAME STATE READ WRITE CKSUM
zfsbkp ONLINE 0 0 0
raidz1-0 ONLINE 0 0 0
ata-ST6000NM021A-2R7101_WRG06H4D ONLINE 0 0 0
ata-ST6000NM021A-2R7101_WRG06FF7 ONLINE 0 0 0
ata-ST6000NM021A-2R7101_WRG06H45 ONLINE 0 0 0

errors: No known data errors

 

[bobmc]

well your last 2 options would be

zpool online -e

or detach and re-attach/resilver the last drive after making sure the autoexpand property is definitely on

 

[janssensm]

Just try:
zpool online -e zfsbkp ata-ST6000NM021A-2R7101_WRG06H4D

edit: oops, forgot your pool name, but I'm glad you figured that out yourself already

 

[ioanv]

Just try:
zpool online -e ata-ST6000NM021A-2R7101_WRG06H4D

It worked:

zpool online -e zfsbkp ata-ST6000NM021A-2R7101_WRG06H4D

Thanks for your help!