February 6, 201610 yr Hi all, I just upgraded from 6.1.6 to 6.1.7 and when my system came back up, my Disk 3 was listed as Unmountable. The disk shows a green ball and the SMART status gives me a green thumbs up. The settings page says File System Status: Unmountable - No file system (32) I believe the disk had been formatted as BTRFS, though it might have been XFS. I have a current offsite backup of my files (love that Crashplan Docker), and actually the data on Disk 3 is of minimal importance - the Disk is dedicated to a Time Machine share and is excluded from my other shares. As long as I get running again before I have a HD crash on one of my Mac's I am good. Attached is the Diagnostics zip file. Please let me know what to do next. Thanks all! strongbad-diagnostics-20160206-1800.zip
February 6, 201610 yr Community Expert You've got fs corruption on disk3, there's not much forum experience repairing btrfs, you can begin by starting the array in maintenance mode and running: btrfs check --repair /dev/md3 With some luck corruption is small and this command is will be enough.
February 6, 201610 yr Author Thanks for the help. I ran it three time and got the following message btrfs check --repair /dev/md3 enabling repair mode Checking filesystem on /dev/md3 UUID: a689b3d7-49ad-4e1f-94e4-73e7766234b8 checking extents Fixed 0 roots. checking free space cache cache and super generation don't match, space cache will be invalidated checking fs roots checking csums checking root refs found 655325340261 bytes used err is 0 total csum bytes: 639124824 total tree bytes: 861519872 total fs tree bytes: 134070272 total extent tree bytes: 46743552 btree space waste bytes: 61750185 file data blocks allocated: 1926415949824 referenced 639287005184 btrfs-progs v4.1.2 When I restarted the array the drive mounted as usual and I don't see any evidence of data loss. I'm thinking of just reformatting the disk to be sure though. It's all backup data on there and now I don't feel I can trust it. Losing my historical backup of 2 laptops isn't even a little deal to me. Any other suggestions?
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