On Fri, Feb 26, 2016 at 06:39:38PM -0800, Marc MERLIN wrote: > btrfs-tools 4.4-1 > gargamel:~# uname -r > 4.4.2-amd64-i915-volpreempt-20160214bc2 > > 2 drive array stopped working after a crash/reboot. Check --repair finds > nothing wrong with it: > > gargamel:~# btrfs check --repair /dev/mapper/raid0d1 > enabling repair mode > Checking filesystem on /dev/mapper/raid0d1 > UUID: 01334b81-c0db-4e80-92e4-cac4da867651 > 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 1201345524312 bytes used err is 0 > total csum bytes: 1165124220 > total tree bytes: 8258322432 > total fs tree bytes: 5574197248 > total extent tree bytes: 1020428288 > btree space waste bytes: 1902023247 > file data blocks allocated: 1193398628352 > referenced 1209324777472 > gargamel:~# mount /var/local/space > mount: wrong fs type, bad option, bad superblock on /dev/mapper/raid0d1, > missing codepage or helper program, or other error > In some cases useful info is found in syslog - try > dmesg | tail or so > [ 8200.511021] BTRFS info (device dm-6): disk space caching is enabled > [ 8200.533030] BTRFS: failed to read the system array on dm-6 > [ 8200.582097] BTRFS: open_ctree failed
Does 'btrfs dev scan' help? Thanks, -liubo > > > gargamel:~# btrfs check --repair /dev/mapper/raid0d2 > enabling repair mode > Checking filesystem on /dev/mapper/raid0d2 > UUID: 01334b81-c0db-4e80-92e4-cac4da867651 > 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 1201345540696 bytes used err is 0 > total csum bytes: 1165124220 > total tree bytes: 8258338816 > total fs tree bytes: 5574197248 > total extent tree bytes: 1020444672 > btree space waste bytes: 1902039421 > file data blocks allocated: 1193398628352 > referenced 1209324777472 > gargamel:~# mount /var/local/space > mount: wrong fs type, bad option, bad superblock on /dev/mapper/raid0d1, > [13373.606737] BTRFS info (device dm-6): disk space caching is enabled > [13373.628682] BTRFS: failed to read the system array on dm-6 > [13373.672607] BTRFS: open_ctree failed > > -- > "A mouse is a device used to point at the xterm you want to type in" - A.S.R. > Microsoft is to operating systems .... > .... what McDonalds is to gourmet > cooking > Home page: http://marc.merlins.org/ > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
