October 1, 20205 yr hi all I set up a parity drive last month and set up a parity check once a month. however I was not aware you should not use correcting checks on these ones. One just finished last night and it found 8 errors. Should I be worried? Attached are diagnotics. Thanks tower-diagnostics-20201001-2220.zip
October 2, 20205 yr Community Expert Any unexplained sync errors a reason to worry about, any unclean shutdown before this last check?
October 2, 20205 yr Author 8 hours ago, JorgeB said: Any unexplained sync errors a reason to worry about, any unclean shutdown before this last check? Nope no unclean shut down. So the correcting scheduled checks are ok? Or leave it non correcting?
October 2, 20205 yr Community Expert 25 minutes ago, nekromantik said: Nope no unclean shut down. Then you should try to find out what caused the sync errors, only acceptable result is 0 sync errors, run a non correcting check, and scheduled checks should also be non correcting.
October 2, 20205 yr Author 3 minutes ago, JorgeB said: Then you should try to find out what caused the sync errors, only acceptable result is 0 sync errors, run a non correcting check, and scheduled checks should also be non correcting. How will I know what caused the errors? Will syslog contain errors? Can I write to array while check is running?
October 2, 20205 yr Community Expert 4 minutes ago, nekromantik said: How will I know what caused the errors? If there was no unclean shutdown it's a hardware problem, RAM, board, controller, disk, etc. 5 minutes ago, nekromantik said: Will syslog contain errors? It only shows the sync errors, not the reason for them, though it can help diagnosing, by comparing with previous errors. 6 minutes ago, nekromantik said: Can I write to array while check is running? Yes, but array will perform slower.
October 2, 20205 yr Author hmm ok some time I see people posting 1 or 2 are normal. Its a brand new sata card and hard drives and I ran pre clear on it without issue.
October 2, 20205 yr Community Expert 13 minutes ago, nekromantik said: some time I see people posting 1 or 2 are normal. Nope, anything except 0 is not normal, or good.
October 2, 20205 yr 2 hours ago, nekromantik said: I see people posting 1 or 2 are normal. Only in the context of... 11 hours ago, JorgeB said: any unclean shutdown before this last check?
October 2, 20205 yr Community Expert A few are normal after unclean shutdown, but they still must be corrected. Zero is the only acceptable result. If your array isn't in sync you can accurately rebuild a disk.
October 2, 20205 yr Author if the new scan I see more errors what would you recommend? if its the SATA card issue how would I confirm?
October 2, 20205 yr Community Expert 13 minutes ago, nekromantik said: if the new scan I see more errors what would you recommend? if its the SATA card issue how would I confirm? Post new diagnostics. If we can compare them in syslog, that would tell what the suspects are. RAM is also a suspect if different parity checks result in different parity errors for example.
October 3, 20205 yr Author so parity check finished with 0 errors. so looks like Im good for now. attached is diagnostics after the last run. tower-diagnostics-20201003-1117.zip Edited October 3, 20205 yr by nekromantik
October 3, 20205 yr Community Expert Run always non correcting checks from now on (unless there's an unclean shutdown), if one finds more errors in the future immediately run another non correcting check without rebooting and post those diags.
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