On Wed, Aug 03, 2011 at 04:46:01PM -0400, Adam Newby wrote: > I recently had a power failure and can no longer mount my /home > directory. The harddrive has two BTRFS partitions: sda7(/) and > sda8(/home). The / partition loads up just fine, but /home does > not. I've tried btrfsck as shown below and I've included dmesg > pertaining to btrfs. This is on ArchLinux and the software versions > are as follows: > btrfs-progs-unstable 0.19.20101006-1 > linux 3.0
Try the instructions on the wiki at [1]. (And please feed back and/or fix any issues you have with the instructions -- they're still quite new and probably have awkward corners). > I actually have quite a bit of data on this partition that I would > rather not lose. Please help! You *really* need to think about making good backups (otherwise we'll have to set the cwillu on you). Hugo. [1] https://btrfs.wiki.kernel.org/index.php/Problem_FAQ#I_can.27t_mount_my_filesystem.2C_and_I_get_a_kernel_oops.21 > Thanks, > Adam > > btrfsck /dev/sda8: > found 152764059648 bytes used err is 1 > total csum bytes: 148756860 > total tree bytes: 436686848 > total fs tree bytes: 160870400 > btree space waste bytes: 110424811 > file data blocks allocated: 4925582483456 > referenced 114231959552 > Btrfs Btrfs v0.19 > root 5 inode 738980 errors 400 > root 5 inode 771936 errors 400 > root 5 inode 771937 errors 400 > root 5 inode 771938 errors 400 > root 5 inode 771939 errors 400 > root 5 inode 771941 errors 400 > root 5 inode 771942 errors 400 > > dmesg |grep btrfs > [ 15.148281] btrfs: unlinked 13 orphans > [ 27.156006] kernel BUG at fs/btrfs/inode.c:4586! > [ 27.156124] Modules linked in: vboxnetflt vboxdrv snd_hda_codec_hdmi > joydev usbhid hid snd_hda_codec_idt snd_hda_intel snd_hda_codec sdhci_pci > sdhci psmouse snd_pcm snd_hwdep btusb firewire_ohci bluetooth crc16 dell_wmi > sg nvidia(P) firewire_core arc4 snd_timer evdev serio_raw sparse_keymap > i2c_i801 iwlagn mmc_core snd battery video soundcore intel_ips wmi ppdev > dell_laptop parport_pc container button ac mac80211 cfg80211 pcspkr rfkill > parport dcdbas iTCO_wdt i2c_core crc_itu_t iTCO_vendor_support intel_agp > snd_page_alloc processor intel_gtt e1000e btrfs zlib_deflate crc32c libcrc32c > ext2 mbcache ehci_hcd usbcore sr_mod cdrom sd_mod ahci libahci libata scsi_mod > [ 27.157096] RIP: 0010:[<ffffffffa010b781>] [<ffffffffa010b781>] > btrfs_add_link+0x161/0x1c0 [btrfs] > [ 27.158176] [<ffffffffa013482f>] add_inode_ref+0x30f/0x3d0 [btrfs] > [ 27.158245] [<ffffffffa013567b>] replay_one_buffer+0x2bb/0x3b0 [btrfs] > [ 27.158318] [<ffffffffa0122f27>] ? alloc_extent_buffer+0x87/0x3d0 [btrfs] > [ 27.158391] [<ffffffffa0132cd1>] walk_down_log_tree+0x391/0x540 [btrfs] > [ 27.160851] [<ffffffffa0132f7d>] walk_log_tree+0xfd/0x270 [btrfs] > [ 27.165784] [<ffffffffa0136d11>] btrfs_recover_log_trees+0x211/0x300 > [btrfs] > [ 27.168297] [<ffffffffa01353c0>] ? replay_one_dir_item+0xe0/0xe0 [btrfs] > [ 27.170832] [<ffffffffa00fd907>] open_ctree+0x13e7/0x17a0 [btrfs] > [ 27.178506] [<ffffffffa00d879e>] btrfs_mount+0x40e/0x5c0 [btrfs] > [ 27.212137] RIP [<ffffffffa010b781>] btrfs_add_link+0x161/0x1c0 [btrfs] -- === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === PGP key: 515C238D from wwwkeys.eu.pgp.net or http://www.carfax.org.uk --- "You got very nice eyes, Deedee. Never noticed them --- before. They real?"
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