Thanks for the reply.
I mounted it ro:
$ sudo btrfs fi show /mnt
Segmentation fault (core dumped)
dmesg says:
...
kernel BUG at /build/linux-wXdoVv/linux-4.4.0/fs/btrfs/ctree.c:5205!
...
RIP: 0010:[<ffffffffc0371b98>] [<ffffffffc0371b98>]
btrfs_search_forward+0x268/0x350 [btrfs]
...
Call Trace:
[<ffffffffc03cabb2>] search_ioctl+0xf2/0x1c0 [btrfs]
[<ffffffff811afc4c>] ? zone_statistics+0x7c/0xa0
[<ffffffffc03cacf2>] btrfs_ioctl_tree_search+0x72/0xc0 [btrfs]
[<ffffffffc03ce1b5>] btrfs_ioctl+0x455/0x28b0 [btrfs]
[<ffffffff8120274b>] ? mem_cgroup_try_charge+0x6b/0x1e0
[<ffffffff811c1a5d>] ? handle_mm_fault+0xcad/0x1820
[<ffffffff81222caf>] do_vfs_ioctl+0x29f/0x490
[<ffffffff8106b544>] ? __do_page_fault+0x1b4/0x400
[<ffffffff81222f19>] SyS_ioctl+0x79/0x90
[<ffffffff8183c672>] entry_SYSCALL_64_fastpath+0x16/0x71
...
full dmesg output is at:
pastebin.com/bhsEJiJN
$ sudo btrfs fi df /mnt
Data, single: total=236.01GiB, used=230.35GiB
System, DUP: total=8.00MiB, used=48.00KiB
System, single: total=4.00MiB, used=0.00B
Metadata, DUP: total=1.00GiB, used=349.11MiB
Metadata, single: total=8.00MiB, used=0.00B
GlobalReserve, single: total=128.00MiB, used=0.00B
I downloaded and compiled the current btrfs v4.10.1-9-gbd0ab27.
sudo ./btrfs check /dev/sdh2
Checking filesystem on /dev/sdh2
UUID: 227fbb6c-ae72-4b81-8e65-942a0ddc6ef7
checking extents
checking free space cache
checking fs roots
checking csums
checking root refs
found 247628603392 bytes used, no error found
total csum bytes: 241513756
total tree bytes: 366084096
total fs tree bytes: 90259456
total extent tree bytes: 10010624
btree space waste bytes: 35406538
file data blocks allocated: 23837459185664
referenced 252963553280
and with lowmem mode (again no errors found):
./btrfs check /dev/sdh2 --mode=lowmem
Checking filesystem on /dev/sdh2
UUID: 227fbb6c-ae72-4b81-8e65-942a0ddc6ef7
checking extents
checking free space cache
checking fs roots
checking csums
checking root refs
found 247738298368 bytes used, no error found
total csum bytes: 241513756
total tree bytes: 366084096
total fs tree bytes: 90259456
total extent tree bytes: 10010624
btree space waste bytes: 35406538
file data blocks allocated: 23837459185664
referenced 252963553280
maybe there is some hint in that segmentation fault?
Also, I compiled from
git.kernel.org/pub/scm/linux/kernel/git/kdave/btrfs-progs.git but I
did not get version 4.10.1 instead of 4.10.2
Regards,
On Fri, Apr 14, 2017 at 1:17 PM, Chris Murphy <li...@colorremedies.com> wrote:
> Can you ro mount it and:
>
> btrfs fi show /mnt
> btrfs fi df /mnt
>
> And then next update the btrfs-progs to something newer like 4.9.2 or
> 4.10.2 and then do another 'btrfs check' without repair. And then
> separately do it again with --mode=lowmem and post both sets of
> results?
>
>
> Chris Murphy
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