I've spoke to another user who did not seem to have these issues on the
current version so it seems it might be something to do with my
particular system..
When I run fsck using the debian experimental version of the userspace
tools I get this output:
ubuntu@ubuntu:~$ sudo btrfsck /dev/sda5
fs tree 259 refs 7 not found
unresolved ref root 261 dir 256 index 31 namelen 4 name snap error 600
unresolved ref root 262 dir 256 index 31 namelen 4 name snap error 600
unresolved ref root 263 dir 256 index 31 namelen 4 name snap error 600
unresolved ref root 264 dir 256 index 31 namelen 4 name snap error 600
unresolved ref root 265 dir 256 index 31 namelen 4 name snap error 600
unresolved ref root 266 dir 256 index 31 namelen 4 name snap error 600
unresolved ref root 267 dir 256 index 31 namelen 4 name snap error 600
found 3873710080 bytes used err is 1
total csum bytes: 3517348
total tree bytes: 258281472
total fs tree bytes: 241065984
btree space waste bytes: 70634105
file data blocks allocated: 15013134336
referenced 4583772160
Btrfs Btrfs v0.19
This is a fairly recent (few days) install, but what I have done so far
is taken snapshots of my "/" subvolume via apt-btrfs-snapshot, rolled
back to one of these snapshots, and deleted the old "/" subvolume along
with some apt-snapshots that I did not use.
So my guess is that btrfs doesnt like that I've removed my original "/"
subvolume, which is then what crashes current, and reports the above
erros in experimental btrfs-tools.
So updating to the newer version wouldn't make much of a difference in
practice, since mountall would still halt on these errors?
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https://bugs.launchpad.net/bugs/748340
Title:
btrfsck fails with "unsupported option features", must [ignore] to
boot
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