Κωνσταντίνος Σκαρλάτος
2014-Jan-29 09:06 UTC
help with btrfs device delete of a disk with errors
I am trying to delete a device (device 5, /dev/sdg) that has some read
errors from a multi device file system :
Label: none uuid: f379d9aa-ddfd-4b4e-84c1-cd93d4592862
Total devices 6 FS bytes used 7.11TiB
devid 1 size 1.82TiB used 1.21TiB path /dev/sda
devid 2 size 1.82TiB used 1.23TiB path /dev/sdb
devid 3 size 1.82TiB used 1.23TiB path /dev/sdc
devid 4 size 1.82TiB used 1.23TiB path /dev/sdd
devid 5 size 0.00 used 1.12TiB path /dev/sdg
devid 6 size 1.82TiB used 1.23TiB path /dev/sdh
$ btrfs fi df /storage/btrfs2
Data, RAID0: total=7.07TiB, used=7.07TiB
Data, single: total=8.00MiB, used=7.94MiB
System, RAID1: total=8.00MiB, used=416.00KiB
System, single: total=4.00MiB, used=0.00
Metadata, RAID1: total=81.00GiB, used=35.02GiB
Metadata, single: total=8.00MiB, used=0.00
btrfs: bdev /dev/sdg errs: wr 0, rd 510, flush 0, corrupt 0, gen 0
Device delete works fine until it gets to a block group that has a read
error, then it crashes and remounts the filesystem as readonly.
I have found via btrfs inspect-internal logical-resolve the file that
corresponds to that block group, and deleted it.
After that, btrfs inspect-internal logical-resolve returns:
ioctl ret=-1, error: No such file or directory
When i retry the device delete operation it still tries to relocate that
same block group and crashes... Is there something else i can do to skip
that block group and continue the device delete?
my kernel is linux-3.13.0-rc6-git
[2279324.794890] btrfs: found 55688 extents
[2279325.525990] btrfs: relocating block group 7349792145408 flags 9
[2279360.657953] btrfs: found 64189 extents
[2279367.861713] ------------[ cut here ]------------
[2279367.861753] WARNING: CPU: 1 PID: 29088 at
fs/btrfs/extent-tree.c:1597 lookup_inline_extent_backref+0x1d9/0x5c0
[btrfs]()
[2279367.861758] Modules linked in: sha256_generic btrfs raid6_pq crc32c
libcrc32c radeon xor snd_hda_codec_hdmi snd_hda_intel snd_hda_codec
snd_hwdep pcspkr ttm snd_pcm snd_page_alloc snd_timer snd drm_kms_helper
edac_core sp5100_tco i2c_piix4 serio_raw k10temp soundcore edac_mce_amd
drm evdev i2c_algo_bit r8169 i2c_core mii wmi shpchp button acpi_cpufreq
processor ext4 crc16 mbcache jbd2 ata_generic pata_acpi sd_mod
hid_generic usbhid hid ohci_pci ehci_pci ohci_hcd xhci_hcd pata_jmicron
ehci_hcd ahci libahci libata scsi_mod usbcore usb_common
[2279367.861839] CPU: 1 PID: 29088 Comm: btrfs Tainted: G W
3.13.0-rc6-git #1
[2279367.861845] Hardware name: Gigabyte Technology Co., Ltd.
GA-890GPA-UD3H/GA-890GPA-UD3H, BIOS FD 07/23/2010
[2279367.861849] 0000000000000009 ffff8800827f96e8 ffffffff814f5648
0000000000000000
[2279367.861858] ffff8800827f9720 ffffffff81061b5d ffff8801fad0be10
0000000000000000
[2279367.861866] 0000000000000000 ffff8800c92b1500 0000000000000009
ffff8800827f9730
[2279367.861873] Call Trace:
[2279367.861886] [<ffffffff814f5648>] dump_stack+0x4d/0x6f
[2279367.861897] [<ffffffff81061b5d>] warn_slowpath_common+0x7d/0xa0
[2279367.861905] [<ffffffff81061c3a>] warn_slowpath_null+0x1a/0x20
[2279367.861929] [<ffffffffa09229d9>]
lookup_inline_extent_backref+0x1d9/0x5c0 [btrfs]
[2279367.861954] [<ffffffffa0923e15>]
insert_inline_extent_backref+0x55/0xd0 [btrfs]
[2279367.861978] [<ffffffffa0923f27>] __btrfs_inc_extent_ref+0x97/0x200
[btrfs]
[2279367.862003] [<ffffffffa092b016>] run_clustered_refs+0xb46/0x1180
[btrfs]
[2279367.862027] [<ffffffffa091a63d>] ?
generic_bin_search.constprop.34+0x8d/0x1a0 [btrfs]
[2279367.862054] [<ffffffffa092f3f0>] btrfs_run_delayed_refs+0xe0/0x550
[btrfs]
[2279367.862083] [<ffffffffa093fdee>]
btrfs_commit_transaction+0x4e/0x9a0 [btrfs]
[2279367.862104] [<ffffffffa09acd6f>] prepare_to_merge+0x1d2/0x1ed
[btrfs]
[2279367.862131] [<ffffffffa098d613>] relocate_block_group+0x393/0x640
[btrfs]
[2279367.862156] [<ffffffffa098da62>]
btrfs_relocate_block_group+0x1a2/0x2f0 [btrfs]
[2279367.862184] [<ffffffffa0965568>]
btrfs_relocate_chunk.isra.28+0x68/0x760 [btrfs]
[2279367.862207] [<ffffffffa091d066>] ? btrfs_search_slot+0x496/0x970
[btrfs]
[2279367.862237] [<ffffffffa095b01b>] ? release_extent_buffer+0x2b/0xd0
[btrfs]
[2279367.862265] [<ffffffffa096082f>] ? free_extent_buffer+0x4f/0xb0
[btrfs]
[2279367.862294] [<ffffffffa0967df9>] btrfs_shrink_device+0x1e9/0x420
[btrfs]
[2279367.862322] [<ffffffffa096ab58>] btrfs_rm_device+0x328/0x800 [btrfs]
[2279367.862330] [<ffffffff8118b192>] ? __kmalloc_track_caller+0x32/0x250
[2279367.862358] [<ffffffffa0974ed0>] btrfs_ioctl+0x2250/0x2d90 [btrfs]
[2279367.862366] [<ffffffff811b350f>] ? user_path_at_empty+0x5f/0x90
[2279367.862374] [<ffffffff814ff9c4>] ? __do_page_fault+0x2c4/0x5b0
[2279367.862382] [<ffffffff811650b7>] ? vma_link+0xb7/0xc0
[2279367.862389] [<ffffffff811b58a0>] do_vfs_ioctl+0x2e0/0x4c0
[2279367.862397] [<ffffffff811b5b01>] SyS_ioctl+0x81/0xa0
[2279367.862404] [<ffffffff814ffcbe>] ? do_page_fault+0xe/0x10
[2279367.862412] [<ffffffff81503aad>] system_call_fastpath+0x1a/0x1f
[2279367.862416] ---[ end trace 0897e4c2446e06c5 ]---
[2279367.862426] BTRFS debug (device sdh): run_one_delayed_ref returned -5
[2279367.862430] ------------[ cut here ]------------
[2279367.862454] WARNING: CPU: 1 PID: 29088 at fs/btrfs/super.c:254
__btrfs_abort_transaction+0x50/0x110 [btrfs]()
[2279367.862459] btrfs: Transaction aborted (error -5)
[2279367.862461] Modules linked in: sha256_generic btrfs raid6_pq crc32c
libcrc32c radeon xor snd_hda_codec_hdmi snd_hda_intel snd_hda_codec
snd_hwdep pcspkr ttm snd_pcm snd_page_alloc snd_timer snd drm_kms_helper
edac_core sp5100_tco i2c_piix4 serio_raw k10temp soundcore edac_mce_amd
drm evdev i2c_algo_bit r8169 i2c_core mii wmi shpchp button acpi_cpufreq
processor ext4 crc16 mbcache jbd2 ata_generic pata_acpi sd_mod
hid_generic usbhid hid ohci_pci ehci_pci ohci_hcd xhci_hcd pata_jmicron
ehci_hcd ahci libahci libata scsi_mod usbcore usb_common
[2279367.862525] CPU: 1 PID: 29088 Comm: btrfs Tainted: G W
3.13.0-rc6-git #1
[2279367.862529] Hardware name: Gigabyte Technology Co., Ltd.
GA-890GPA-UD3H/GA-890GPA-UD3H, BIOS FD 07/23/2010
[2279367.862533] 0000000000000009 ffff8800827f98e8 ffffffff814f5648
ffff8800827f9930
[2279367.862540] ffff8800827f9920 ffffffff81061b5d 00000000fffffffb
ffff880204182000
[2279367.862547] ffff8800c92b1500 ffffffffa09b2b60 0000000000000b04
ffff8800827f9980
[2279367.862554] Call Trace:
[2279367.862563] [<ffffffff814f5648>] dump_stack+0x4d/0x6f
[2279367.862571] [<ffffffff81061b5d>] warn_slowpath_common+0x7d/0xa0
[2279367.862580] [<ffffffff81061bcc>] warn_slowpath_fmt+0x4c/0x50
[2279367.862603] [<ffffffffa0914c50>]
__btrfs_abort_transaction+0x50/0x110 [btrfs]
[2279367.862629] [<ffffffffa092f72b>]
btrfs_run_delayed_refs+0x41b/0x550 [btrfs]
[2279367.862658] [<ffffffffa093fdee>]
btrfs_commit_transaction+0x4e/0x9a0 [btrfs]
[2279367.862678] [<ffffffffa09acd6f>] prepare_to_merge+0x1d2/0x1ed
[btrfs]
[2279367.862704] [<ffffffffa098d613>] relocate_block_group+0x393/0x640
[btrfs]
[2279367.862730] [<ffffffffa098da62>]
btrfs_relocate_block_group+0x1a2/0x2f0 [btrfs]
[2279367.862758] [<ffffffffa0965568>]
btrfs_relocate_chunk.isra.28+0x68/0x760 [btrfs]
[2279367.862782] [<ffffffffa091d066>] ? btrfs_search_slot+0x496/0x970
[btrfs]
[2279367.862811] [<ffffffffa095b01b>] ? release_extent_buffer+0x2b/0xd0
[btrfs]
[2279367.862840] [<ffffffffa096082f>] ? free_extent_buffer+0x4f/0xb0
[btrfs]
[2279367.862868] [<ffffffffa0967df9>] btrfs_shrink_device+0x1e9/0x420
[btrfs]
[2279367.862896] [<ffffffffa096ab58>] btrfs_rm_device+0x328/0x800 [btrfs]
[2279367.862904] [<ffffffff8118b192>] ? __kmalloc_track_caller+0x32/0x250
[2279367.862932] [<ffffffffa0974ed0>] btrfs_ioctl+0x2250/0x2d90 [btrfs]
[2279367.862939] [<ffffffff811b350f>] ? user_path_at_empty+0x5f/0x90
[2279367.862947] [<ffffffff814ff9c4>] ? __do_page_fault+0x2c4/0x5b0
[2279367.862954] [<ffffffff811650b7>] ? vma_link+0xb7/0xc0
[2279367.862961] [<ffffffff811b58a0>] do_vfs_ioctl+0x2e0/0x4c0
[2279367.862968] [<ffffffff811b5b01>] SyS_ioctl+0x81/0xa0
[2279367.862976] [<ffffffff814ffcbe>] ? do_page_fault+0xe/0x10
[2279367.862982] [<ffffffff81503aad>] system_call_fastpath+0x1a/0x1f
[2279367.862987] ---[ end trace 0897e4c2446e06c6 ]---
[2279367.862993] BTRFS error (device sdh) in
btrfs_run_delayed_refs:2820: errno=-5 IO failure
[2279367.867045] BTRFS info (device sdh): forced readonly
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