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Problem with savefs of btrfs partitions / 2

Posted: Sun Dec 15, 2013 7:22 am
by de3m3042
Dear admin,
trying to backup a btrfs partitions with

[email protected] /root % fsarchiver -V
fsarchiver 0.6.17 (2013-02-25)[/i]

I get the following message :

[email protected] /root % fsarchiver -v savefs ./WURZEL.fsa /dev/mapper/pdc_bbjgahibh3
filesys.c#313,generic_mount(): partition [/dev/mapper/pdc_bbjgahibh3] cannot
be mounted on [/tmp/fsa/20131210-171949-00] as [btrfs] with options [(null)]
oper_save.c#1032,filesystem_mount_partition(): cannot mount partition
[/dev/mapper/pdc_bbjgahibh3]: filesystem may not be supported by either
fsarchiver or the kernel.
removed ./WURZEL.fsa

dmesg says :
[ 1024.021573] device label WURZEL devid 1 transid 163 /dev/mapper/pdc_bbjgahibh3
[ 1024.022495] btrfs: disk space caching is enabled
[ 1024.022501] BTRFS: couldn't mount because of unsupported optional features (40).
[ 1024.032310] btrfs: open_ctree failed

The partition was created with :
openSUSE 13.1
uname -a
Linux siggel 3.11.6-4-desktop #1 SMP PREEMPT Wed Oct 30 18:04:56 UTC 2013 (e6d4a27) x86_64 x86_64 x86_64 GNU/Linux
btrfs --version
Btrfs v3.12+20131125

Any idea what's going wrong ?
I can provide more details, if needed

Thanks in advance