Hi,
When trying to send a snapshot I'm now getting errors such as:
ERROR: failed to open backups/xps13/@home/@home.20151229_13:43:09/alistair/.mozilla/firefox/yu3bxg7y.default/cookies.sqlite. No such file or directory
and
ERROR: could not find parent subvolume
This script has been running without a problem for several weeks.
I can reboot the system and the filesystem mounts without a problem. I
can also navigate through the existing snapshots and access files
without any problem (these are all read-only snapshots, so I'm not
attempting to write anything). There are no obvious errors in the
system log (I checked the log manually, and also have Marc Merlin's sec
script running to monitor for errors).
I tried running a read-only btrfs check, however it is hanging while
checking fs roots:
> sudo umount /srv/d2root
> sudo btrfs check /dev/sda
checking filesystem on /dev/sda
UUID: d8daaa62-afa2-4654-b7de-22fdc8456e03
checking extents
checking free space cache
checking fs roots
^C
Disk IO was several MB/s during the initial part of the check and
dropped to 0 on checking fs roots. I left it for about 10 minutes
before interrupting.
The same happens for /dev/sdb.
General system information:
uname -a
Linux alarmpi 4.1.15-1-ARCH #1 SMP Tue Dec 15 18:39:32 MST 2015 armv7l
GNU/Linux
btrfs --version
btrfs-progs v4.3.1
mount | grep btrfs
/dev/sda on /srv/d2root type btrfs (rw,noatime,compress-force=zlib,space_cache)
> sudo btrfs fi show /srv/d2root
Label: 'data2' uuid: d8daaa62-afa2-4654-b7de-22fdc8456e03
Total devices 2 FS bytes used 117.34GiB
devid 1 size 1.82TiB used 118.03GiB path /dev/sda
devid 2 size 1.82TiB used 118.03GiB path /dev/sdb
> sudo btrfs fi df /srv/d2root
Data, RAID1: total=117.00GiB, used=116.76GiB
System, RAID1: total=32.00MiB, used=48.00KiB
Metadata, RAID1: total=1.00GiB, used=595.36MiB
GlobalReserve, single: total=208.00MiB, used=0.00B
> sudo btrfs fi usage /srv/d2root
Overall:
Device size: 3.64TiB
Device allocated: 236.06GiB
Device unallocated: 3.41TiB
Device missing: 0.00B
Used: 234.68GiB
Free (estimated): 1.70TiB (min: 1.70TiB)
Data ratio: 2.00
Metadata ratio: 2.00
Global reserve: 208.00MiB (used: 0.00B)
Data,RAID1: Size:117.00GiB, Used:116.76GiB
/dev/sda 117.00GiB
/dev/sdb 117.00GiB
Metadata,RAID1: Size:1.00GiB, Used:595.36MiB
/dev/sda 1.00GiB
/dev/sdb 1.00GiB
System,RAID1: Size:32.00MiB, Used:48.00KiB
/dev/sda 32.00MiB
/dev/sdb 32.00MiB
Unallocated:
/dev/sda 1.70TiB
/dev/sdb 1.70TiB
Help!
Many Thanks,
Alistair
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