April 9, 20224 yr Hi All, I just followed the procedures here to replace a failing SSD in my cache pool with a bigger SSD, currently on 6.10.0 RC4. Everything seemed to be fine right up until the last step of restarting the array as the new disk was bigger than the one it was replacing - when it restarted, it came up with the error: "Unmountable: Invalid pool config" I've attached the diagnostic logs, and haven't tried anything after re-starting the array yet. Any ideas how to fix this? I have the original (failing) SSD still attached, that could be pulled back into the pool if it will help. tatooine-diagnostics-20220409-1806.zip
April 9, 20224 yr Author I'm guessing the following is where the error is: Apr 9 15:31:47 Tatooine emhttpd: shcmd (530): mkdir -p /mnt/cache Apr 9 15:31:47 Tatooine emhttpd: /mnt/cache uuid: 9bafae41-27ca-4125-b748-c512ae2ff207 Apr 9 15:31:47 Tatooine emhttpd: /mnt/cache found: 4 Apr 9 15:31:47 Tatooine emhttpd: /mnt/cache extra: 0 Apr 9 15:31:47 Tatooine emhttpd: /mnt/cache missing: 1 Apr 9 15:31:47 Tatooine emhttpd: /mnt/cache Label: none uuid: 9bafae41-27ca-4125-b748-c512ae2ff207 Apr 9 15:31:47 Tatooine emhttpd: /mnt/cache Total devices 4 FS bytes used 104.47GiB Apr 9 15:31:47 Tatooine emhttpd: /mnt/cache devid 1 size 465.76GiB used 107.03GiB path /dev/sdh1 Apr 9 15:31:47 Tatooine emhttpd: /mnt/cache devid 2 size 223.57GiB used 42.00GiB path /dev/sdd1 Apr 9 15:31:47 Tatooine emhttpd: /mnt/cache devid 4 size 223.57GiB used 42.03GiB path /dev/sdi1 Apr 9 15:31:47 Tatooine emhttpd: /mnt/cache devid 5 size 465.76GiB used 106.03GiB path /dev/sdc1 Apr 9 15:31:47 Tatooine emhttpd: /mnt/cache mount error: Invalid pool config But I'm not suite sure how to fix it? It appears to be missing disk 3 (which I guess is the disk I replaced with the new disk), but I though the process I followed was meant to take that into account and replace it with the new disk....
April 10, 20224 yr Community Expert Solution Replacement appears to have been successful, not sure why the error, please reboot and post new diags after array start so I can see the new btrfs scan results.
April 10, 20224 yr Author 29 minutes ago, JorgeB said: Replacement appears to have been successful, not sure why the error, please reboot and post new diags after array start so I can see the new btrfs scan results. amazing - rebooted and all appears fine now. diags attached for info. Thanks very much! tatooine-diagnostics-20220410-1043.zip
April 10, 20224 yr Community Expert Good, everything looks normal now, not sure what exactly happened before, but there was a pool replacement bug fixed recently and there might still be some issues left, will see if I can reproduce this when I have some time
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