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- bmxboy@bmxboy-virtual-machine:/$ sudo mount -t btrfs /dev/vg1/volume_1 /mnt/ds001 -o ro
- mount: /mnt/ds001: wrong fs type, bad option, bad superblock on /dev/mapper/vg1-volume_1, missing codepage or helper program, or other error.
- bmxboy@bmxboy-virtual-machine:/$ sudo mdadm -D /dev/md2
- /dev/md2:
- Version : 1.2
- Creation Time : Thu Mar 28 20:24:15 2019
- Raid Level : raid6
- Array Size : 23403556352 (22319.37 GiB 23965.24 GB)
- Used Dev Size : 2925444544 (2789.92 GiB 2995.66 GB)
- Raid Devices : 10
- Total Devices : 10
- Persistence : Superblock is persistent
- Update Time : Fri Apr 19 08:55:24 2019
- State : clean
- Active Devices : 10
- Working Devices : 10
- Failed Devices : 0
- Spare Devices : 0
- Layout : left-symmetric
- Chunk Size : 64K
- Consistency Policy : resync
- Name : DS001:2
- UUID : 356ff063:76450548:c57674b6:69223636
- Events : 29235
- Number Major Minor RaidDevice State
- 0 8 131 0 active sync /dev/sdi3
- 1 8 115 1 active sync /dev/sdh3
- 2 8 67 2 active sync /dev/sde3
- 3 8 83 3 active sync /dev/sdf3
- 4 8 51 4 active sync /dev/sdd3
- 8 8 99 5 active sync /dev/sdg3
- 6 8 147 6 active sync /dev/sdj3
- 12 8 19 7 active sync /dev/sdb3
- 11 8 163 8 active sync /dev/sdk3
- 10 8 35 9 active sync /dev/sdc3
- bmxboy@bmxboy-virtual-machine:/$ dmesg | grep BTRFS
- [ 17.026125] BTRFS: device label 2019.03.28-12:24:35 v23739 devid 1 transid 6011 /dev/dm-1
- [ 168.013852] BTRFS info (device dm-1): using free space tree
- [ 168.013855] BTRFS info (device dm-1): has skinny extents
- [ 168.127156] BTRFS error (device dm-1): parent transid verify failed on 887020683264 wanted 6011 found 6270
- [ 168.133110] BTRFS error (device dm-1): parent transid verify failed on 887020683264 wanted 6011 found 6270
- [ 168.133118] BTRFS warning (device dm-1): failed to read tree root
- [ 168.151448] BTRFS error (device dm-1): open_ctree failed
- [ 8686.922437] BTRFS warning (device dm-1): 'recovery' is deprecated, use 'usebackuproot' instead
- [ 8686.922439] BTRFS info (device dm-1): trying to use backup root at mount time
- [ 8686.922441] BTRFS info (device dm-1): disabling free space tree
- [ 8686.922444] BTRFS error (device dm-1): cannot disable free space tree
- [ 8686.923395] BTRFS error (device dm-1): open_ctree failed
- [ 9761.164452] BTRFS info (device dm-1): disabling free space tree
- [ 9761.164455] BTRFS error (device dm-1): cannot disable free space tree
- [ 9761.165254] BTRFS error (device dm-1): open_ctree failed
- [14237.853328] BTRFS info (device dm-1): unrecognized mount option '0'
- [14237.853528] BTRFS error (device dm-1): open_ctree failed
- bmxboy@bmxboy-virtual-machine:/$ sudo btrfs fi show
- Label: '2019.03.28-12:24:35 v23739' uuid: 90877621-a602-4915-914c-70eada4c3428
- Total devices 1 FS bytes used 14.68TiB
- devid 1 size 19.07TiB used 15.50TiB path /dev/mapper/vg1-volume_1
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