Vegard Nossum wrote on 2015/11/30 23:05 +0100:
On 11/30/2015 05:34 PM, David Sterba wrote:
On Mon, Nov 30, 2015 at 02:48:51PM +0100, David Sterba wrote:
On Sun, Nov 15, 2015 at 07:21:17PM +0100, Vegard Nossum wrote:
With the attached btrfs image, I get the following splat when mounting:
"""
# mount -o loop -t btrfs ./btrfs.0 /mnt/0/
BTRFS: device fsid 9006933e-2a9a-44f0-917f-514252aeec2c devid 1 transid
7 /dev/loop0
BTRFS info (device loop0): disk space caching is enabled
BUG: failure at fs/btrfs/ctree.h:337/btrfs_chunk_item_size()!
The fix, worked for me on the provided image:
https://patchwork.kernel.org/patch/7728051/
I'll add the attached image to btrfs-progs testsuite as it triggers
crashes in other tools.
Thanks, that seems to fix the problem.
With your patch and a new image, I run into a second issue (which is
probably unrelated):
BTRFS critical (device loop0): unable to find logical 4294963200 len
40966cc7e != de8
BUG: failure at fs/btrfs/inode.c:1805/btrfs_merge_bio_hook()!
Kernel panic - not syncing: BUG! errors
CPU: 0 PID: 913 Comm: mount Not tainted 4.2.5 #1cc7e devid 1 transid 7
/dev/loop0
Stack: dev_item UUID does not match fsid:
de80ced1-18ac-490c-9afb-cf0a7d66cc7e != de8
e0147430 60075412 600bd457 603f5080
606dfc7a 605e2b14 e0147440 605e595fors
e0147560 605e291e e00cb2e8 00001000
Call Trace:
[<60029f3b>] show_stack+0xdb/0x1a0
[<605e595f>] dump_stack+0x2a/0x2c
[<605e291e>] panic+0x137/0x2ac
[<602b8d0c>] btrfs_merge_bio_hook+0xfc/0x100
[<602e3923>] submit_extent_page+0x223/0x330
[<602e51a6>] __do_readpage+0x476/0xb60
[<602e59bf>] __extent_read_full_page+0x12f/0x140
[<602e8264>] read_extent_buffer_pages+0x1e4/0x410
[<602a9d46>] btree_read_extent_buffer_pages.constprop.24+0x106/0x1a0
[<602aa67e>] read_tree_block+0x5e/0xa0
[<602b0064>] open_ctree+0x1814/0x2db0
[<60273a3b>] btrfs_mount+0xf3b/0x1010
[<601054d3>] mount_fs+0x33/0x210
[<60124b94>] vfs_kern_mount+0x74/0x170
[<60272df3>] btrfs_mount+0x2f3/0x1010
[<601054d3>] mount_fs+0x33/0x210
[<60124b94>] vfs_kern_mount+0x74/0x170
[<601264dc>] do_mount+0x26c/0xf30
[<6012768b>] SyS_mount+0xab/0x120
Should I start a new thread? I've attached the new image. Thanks,
Vegard
Glad to see btrfsck is much robust than kernel now. :)
Btrfsck already gives quite good clue on the problem:
ERROR: chunk_root block unaligned: 4294967168
ERROR: chunk_root block unaligned: 4294967168
Chunk root in superblock is not aligned, and the superblock is not valid.
It would be better to copy all these btrfs-progs enhancement to kernel.
Thanks,
Qu
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