CaptainTivo Posted September 1, 2020 Share Posted September 1, 2020 I just shucked a WD100EMAZ and put it in my server to run pre-clear. The pre-clear failed during the initial read so I put the drive back into the case and attached to PC to run the WD Data Lifeguard diagnostics on it. I ran the long test (12 hours) and it passed. I put it back into the server and ran pre-clear but it again failed during the pre-read. I then shut down the server and put the drive into a different bay with a different SATA port and ran pre-clear again. It's not finished yet but it's 80% into the the post-clear read and looks like it will pass. Here's the thing: the first two times, I inserted the drive into a hot-plug bay while the array was stopped but the machine was up and running. I have done this before to mount unassigned disks to do backups and it worked fine. Maybe there is something special about pre-clear that causes it to fail when I insert the disk hot-plugged? Attached is the syslog. It looks like the pre-read is working fine for a while and then the disk just drops offline! Log file: Things seem fine until here: Aug 30 11:38:15 Tower kernel: sd 7:0:12:0: [sdg] Unaligned partial completion (resid=12284, sector_sz=512) then a string of read errors and then: Aug 30 11:43:12 Tower preclear_disk_1EGEK2VZ[3582]: /usr/local/emhttp/plugins/preclear.disk/script/preclear_disk.sh: line 1267: echo: write error: No space left on device Then this: Aug 30 11:38:53 Tower unassigned.devices: Disk with serial 'WDC_WD100EMAZ-00WJTA0_1EGEK2VZ', mountpoint 'easystore' is not set to auto mount and will not be mounted. which seems to say the disk was umounted. Then a bunch more read errors and finally: Aug 30 11:43:12 Tower preclear_disk_1EGEK2VZ[3582]: /usr/local/emhttp/plugins/preclear.disk/script/preclear_disk.sh: line 1267: echo: write error: No space left on device Which is odd since it was supposed to be reading the disk. "no space left on device"? Anyway, I guess I need to know if I should not use the hot-plug method to mount my external backup disks. Or if the SATA port that this particular one is on is bad in some way. Thanks for any help. tower-syslog-20200831-0315.zip Quote Link to comment
Frank1940 Posted September 1, 2020 Share Posted September 1, 2020 I was under the impression that Unraid did not support 'hot-plugging'. There is some stuff that has to happen at the BIOS and hardware level for hot-plugging to work. It could well be that this is occurring successfully on your system but Unraid is not properly mounting the disk for actual use. I would suggest that you shut the server down (after the present pre-clear cycle finishes) and try it again in that hot plug bay from a cold start. Quote Link to comment
JorgeB Posted September 2, 2020 Share Posted September 2, 2020 Possibly unrelated but you should upgrade the LSI's firmware to latest (20.00.07.00) Quote Link to comment
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