December 23, 20214 yr Community Expert Adding some drives which required some moving of cables, one hba cable wasn't hooked back up correctly and so those drives didn't appear. Array was not started, pools were not mounted. No problem shutdown and fix, they reappear on boot, all good Now I see a warning against the drives in those pools "All existing data on this device will be OVERWRITTEN when array is Started" Is this actually going to overwrite the data on those drives ?
December 23, 20214 yr Author Community Expert root@fortytwo:~# btrfs fi show Label: none uuid: 533c0b3a-8a34-4203-af2e-9c380d554c7a Total devices 1 FS bytes used 190.76GiB devid 1 size 476.94GiB used 221.03GiB path /dev/nvme0n1p1 Label: none uuid: b4460fad-e372-492d-af6e-7a766202415d Total devices 2 FS bytes used 981.27GiB devid 4 size 1.82TiB used 1.05TiB path /dev/nvme1n1p1 devid 5 size 1.82TiB used 1.05TiB path /dev/nvme2n1p1 Label: none uuid: 77c414a6-8ac6-4003-b447-689ca96865f3 Total devices 3 FS bytes used 7.23TiB devid 1 size 3.64TiB used 2.57TiB path /dev/sdd1 devid 2 size 3.64TiB used 2.57TiB path /dev/sdb1 devid 3 size 3.64TiB used 2.57TiB path /dev/sde1 Label: none uuid: f522172e-c3f4-4f7a-9727-3b69a5ab81f4 Total devices 4 FS bytes used 65.28TiB devid 1 size 16.37TiB used 16.34TiB path /dev/sdu1 devid 2 size 16.37TiB used 16.34TiB path /dev/sdo1 devid 3 size 16.37TiB used 16.34TiB path /dev/sdm1 devid 4 size 16.37TiB used 16.34TiB path /dev/sdl1 Label: none uuid: f7538fe8-507c-4c36-bd3c-aadc92dc921a Total devices 4 FS bytes used 64.91TiB devid 1 size 16.37TiB used 16.26TiB path /dev/sdw1 devid 2 size 16.37TiB used 16.26TiB path /dev/sdaa1 devid 3 size 16.37TiB used 16.26TiB path /dev/sdt1 devid 4 size 16.37TiB used 16.26TiB path /dev/sdn1 Label: none uuid: 67290cac-5453-458c-90f2-10835ff79fe4 Total devices 2 FS bytes used 32.56TiB devid 1 size 16.37TiB used 16.30TiB path /dev/sdy1 devid 2 size 16.37TiB used 16.30TiB path /dev/sdac1 this seems to indicate everything is OK, but I have NFI what the Unraid GUI is about to do if I start the array. (the two 4 device pools are the ones in question)
December 23, 20214 yr Author Community Expert Solution OK after finding a similar report by another user, I decided to reboot as he did and the warning went away as it did for him... Started the array and all is well... thank fk. This is the second time Unraid's BTRFS pool state management has tripped me up, it would be great to see the BTRFS implementation in Unraid get a bit more love before we dive in the deep end with ZFS. Edited December 23, 20214 yr by tjb_altf4
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