ZFS FileSystem error

[yena]

Hello, i have this problem on a server with 2HD Sata and ARECA 1200:

The server can't access disks:

blk_update_request: I/O error, dev sda, sector 37568672
blk_update_request: I/O error, dev sda, sector 2242343324
blk_update_request: I/O error, dev sda, sector 603434343
arcmsr: executing bus reset eh... num_resets = 0, num_aborts =20
sd 0:0:0:0 rejecting I/O to offline device

But the volume raid is normal:
vsf info
--------------------------------------------------------------------------------------------------------------------
# Name Raid Name Level Capacity Ch/Id/Lun State
===============================================================================
1 ARC-1200-VOL#00 Raid Set # 00 Raid1+0 2000.0GB 00/00/00 Normal
===============================================================================
GuiErrMsg<0x00>: Success.
--------------------------------------------------------------------------------------------------------------------

And no error on the event log of the raid card.

Have i to do a scrub on the FS?
If yes, what is the best practoice on ZFS ? ( first time for me on zfs )

Thanks

 

[jeffwadsworth]

Looks like one of the disks has bad sectors. Are you using the hardware card to do the raid? With ZFS, that is a bad idea. If not, check this link:

https://www.forwardingplane.net/2014/03/replace-zfs-raidz1-disk/

 

[yena]

So, no scrub needed?
I have 50% because i don't know witch hard disk have the problem.
Thanks

 

[yena]

Looks like one of the disks has bad sectors. Are you using the hardware card to do the raid? With ZFS, that is a bad idea. If not, check this link:

https://www.forwardingplane.net/2014/03/replace-zfs-raidz1-disk/

I use Hardware card, Areca 1200.

Now scrup is working:

zpool status -v rpool
pool: rpool
state: ONLINE
status: One or more devices has experienced an error resulting in data
corruption. Applications may be affected.
action: Restore the file in question if possible. Otherwise restore the
entire pool from backup.
see: http://zfsonlinux.org/msg/ZFS-8000-8A
scan: scrub in progress since Tue Sep 6 19:43:20 2016
71.6M scanned out of 842G at 1.43M/s, 167h21m to go
0 repaired, 0.01% done
config:

NAME STATE READ WRITE CKSUM
rpool ONLINE 0 0 0
sda2 ONLINE 0 0 0

errors: Permanent errors have been detected in the following files:

rpool/VPS/subvol-100-disk-1@vzdump:/var/www/vhosts/meteoindiretta.it/webcam.meteoindiretta.it/static/17524/2016/04/18/05_1.jpg
---------------------------------------------------------------------------------------------------------

 

[LnxBil]

So, you're running ZFS on top of hardware RAID which is the worst situation for ZFS. Now you ended up with file loss :-(

Please only use ZFS on hardware RAID with flashed IT-mode firmware such that you will not have any RAID controller stuff in between and ZFS has to manage the real disks for itself.

Have you off-site backups to restore your VMs from?