May 7, 20251 yr So here's the situation I find myself stuck in. I have a btrfs pool with 4 external drives (2x 10gb, 2x 8gb). I was having trouble with one of the drives, so I removed it from the pool to run some tests on it. A few days later I was going to add the drive back to the pool. I was having trouble getting the array to stop, so I just had it do a reboot instead, figuring I had a connection open somewhere. Only now, when it reboots, the array won't start at all. The webserver doesn't start, so I have no GUI to log into, although I am able to ssh into the machine with no issue. I did some digging through the logs, and I did find this one error: May 6 23:08:36 ennisranch emhttpd: pool_state_btrfs 3167 rdevStatus.35 not found I would expect this because that pool is missing the drive. But I don't know if that preventing everything from starting up or not. The only other errors I found in the syslog were these: May 6 23:07:51 ennisranch kernel: ACPI Error: No handler for Region [SYSI] (00000000cdf5a9e0) [IPMI] (20230628/evregion-131) May 6 23:07:51 ennisranch kernel: ACPI Error: Region IPMI (ID=7) has no handler (20230628/exfldio-261) May 6 23:07:51 ennisranch kernel: ACPI Error: Aborting method \_SB.PMI0._GHL due to previous error (AE_NOT_EXIST) (20230628/psparse-529) May 6 23:07:51 ennisranch kernel: ACPI Error: Aborting method \_SB.PMI0._PMC due to previous error (AE_NOT_EXIST) (20230628/psparse-529) May 6 23:07:51 ennisranch kernel: ACPI: \_SB_.PMI0: _PMC evaluation failed: AE_NOT_EXIST I read elsewhere these errors were nvidia driver related, and I am using an GTX 1650 in my PowerEdge r720. But I've been running with this setup for awhile now, so not sure if this is related or not. Since I can ssh into my server without issue, I went ahead and generated a diagnostics file which I've attached here. Would appreciate any suggestions on how to further troubleshoot this. tower-diagnostics-20250506-2315.zip
May 7, 20251 yr Community Expert There's a problem with the pool cfg file, delete /config/pools/e---a.cfg on the flash drive then reboot, then post the output from btrfs fi show
May 7, 20251 yr Author Solution Thank you JorgeB. Getting rid of that pool config file is letting it startup properly without the pool. Here is the output from the btrfs fi show command. I do see my 4 pool drives listed. Label: none uuid: b89f658e-2b1d-4151-a184-a41f74815983 Total devices 2 FS bytes used 392.17GiB devid 1 size 931.51GiB used 664.03GiB path /dev/nvme0n1p1 devid 2 size 931.51GiB used 664.03GiB path /dev/nvme1n1p1 Label: none uuid: 18e501c1-0056-4248-ae25-a2731bea8102 Total devices 4 FS bytes used 15.25TiB devid 1 size 9.09TiB used 8.55TiB path /dev/sdc1 devid 2 size 9.09TiB used 8.50TiB path /dev/sdd1 devid 3 size 7.28TiB used 6.73TiB path /dev/sda1 devid 4 size 7.28TiB used 6.73TiB path /dev/sde1 Label: none uuid: a0101193-61c2-40c9-ba6e-a1975413459e Total devices 1 FS bytes used 68.37GiB devid 1 size 128.00GiB used 86.02GiB path /dev/loop2 Label: none uuid: 8abccead-5478-474b-9061-c3f545ae0ab7 Total devices 1 FS bytes used 1.42MiB devid 1 size 1.00GiB used 126.38MiB path /dev/loop3
May 7, 20251 yr Author The second drive in my pool is the one I had temporarily taken out and was trying to put back in. You can see how it has slightly less used space relative to the first drive.
May 7, 20251 yr Community Expert create a new pool with the same name and 4 slots assign the pool devices, leave the filesystem set to auto start the array to import the pool, any issues post diags after
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