I have set up a home fileserver, using 3 drives in a raidz1 configuration. It's all working great, but I'd like some confirmation that I'm interpreting the output of "zpool status" correctly.
Here it is:
So - on the last "scrub", I had some errors repaired. I assume that the errors still listed for each drive under "CKSUM" are errors that still exist (because it says they are "unrecoverable"). As it also says "no known data errors", I assume that my data is intact, but I have lost some of the redundancy built into ZFS. I also assume that, if I get more "CKSUM" errors across the three drives, eventually they may line up across a particular piece of data and I will get corruption.
Am I correct? Do people run drives with CKSUM errors, and if so, what are your thresholds for replacement (they are old and quite used drives)?
Thanks in advance!
Here it is:
Code:
pool: keg2
state: ONLINE
status: One or more devices has experienced an unrecoverable error. An
attempt was made to correct the error. Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the errors
using 'zpool clear' or replace the device with 'zpool replace'.
see: http://zfsonlinux.org/msg/ZFS-8000-9P
scan: scrub repaired 448K in 1h26m with 0 errors on Sun Jan 10 01:50:44 2021
config:
NAME STATE READ WRITE CKSUM
keg2 ONLINE 0 0 0
raidz1-0 ONLINE 0 0 0
ata-WDC_WD20EFRX-68AX9N0_WD-WMC301719728 ONLINE 0 0 12
ata-WDC_WD20EFRX-68AX9N0_WD-WMC301719975 ONLINE 0 0 3
ata-WDC_WD20EFRX-68EUZN0_WD-WCC4M2TF1P1Y ONLINE 0 0 3
errors: No known data errors
So - on the last "scrub", I had some errors repaired. I assume that the errors still listed for each drive under "CKSUM" are errors that still exist (because it says they are "unrecoverable"). As it also says "no known data errors", I assume that my data is intact, but I have lost some of the redundancy built into ZFS. I also assume that, if I get more "CKSUM" errors across the three drives, eventually they may line up across a particular piece of data and I will get corruption.
Am I correct? Do people run drives with CKSUM errors, and if so, what are your thresholds for replacement (they are old and quite used drives)?
Thanks in advance!