btrfs reparieren
Thomas Baeumer
tbals at ctrl-c.de
Wed Apr 20 22:01:17 CEST 2016
Hallo zusammen,
ich habe auf meinen Raspi ein XBIAN laufen. das ist ein kleine Distri
speziell für Kodi optimiert, so wie OpenElec.
Xbian setzt offensichtlich auf btrs und nun bootet der Raspi damit
nicht mehr und da sind dummerweise ungesicherte wichtige configs
drauf. Also mal die SD-Card raus uns in mein Ubuntu-Rechner
gesteckt:
Apr 20 21:47:09 unrein kernel: [ 526.580974] mmc0: new high speed SDHC card at address 0001
Apr 20 21:47:09 unrein kernel: [ 526.588987] mmcblk0: mmc0:0001 00000 14.9 GiB
Apr 20 21:47:09 unrein kernel: [ 526.591053] mmcblk0: p1 p2 p3
Apr 20 21:47:09 unrein kernel: [ 526.709810] BTRFS: device label xbian devid 1 transid 113411 /dev/mmcblk0p2
Apr 20 21:47:09 unrein kernel: [ 526.766449] BTRFS info (device mmcblk0p2): disk space caching is enabled
Apr 20 21:47:09 unrein kernel: [ 526.766455] BTRFS: couldn't mount because of unsupported optional features (10).
Apr 20 21:47:09 unrein kernel: [ 526.777340] FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
Apr 20 21:47:09 unrein udisksd[3155]: Mounted /dev/mmcblk0p1 at /media/tbals/xbianboot on behalf of uid 1000
Apr 20 21:47:09 unrein kernel: [ 526.796906] BTRFS: open_ctree failed
Ganz doof. Ich habe kein Plan von btrfs, also mal gegoogelt:
# btrfs fi show
Label: 'xbian' uuid: a811f911-04dd-4f8c-a32d-2d0339a9337e
Total devices 1 FS bytes used 2.21GiB
devid 1 size 14.60GiB used 4.04GiB path /dev/mmcblk0p2
# btrfsck --repair /dev/mmcblk0p2
enabling repair mode
couldn't open because of unsupported option features (10).
Couldn't open file system
# btrfs check /dev/mmcblk0p2
couldn't open because of unsupported option features (10).
Couldn't open file system
# btrfs-show-super /dev/mmcblk0p2
superblock: bytenr=65536, device=/dev/mmcblk0p2
# btrfs check -s 65536 /dev/mmcblk0p2
using SB copy 65536, bytenr 16384
No valid Btrfs found on /dev/mmcblk0p2
Couldn't open file system
Tut aber alles nicht.
Keine Ahnung was mir die Meldung "unsupported option features (10)" sagen soll.
Habe ich eine Chance das noch zu retten?
Danke und Gruss
Thomas
--
thomas baeumer
there is no cloud, just other people's computers.
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