After an online resize, the filesystem reports its new size, but still runs out of space at the old size:
Mar 9 08:12:59 vlad kernel: no space left, need 4096, 380928 delalloc bytes,
51509866496 bytes_used, 0 bytes_reserved, 0 bytes_pinned, 0 bytes_readonly, 0
may use51510247424 total
[...]
Mar 9 08:14:21 vlad kernel: no space left, need 4096, 0 delalloc bytes,
51510247424 bytes_used, 0 bytes_reserved, 0 bytes_pinned, 0 bytes_readonly, 0
may use51510247424 total
h...@vlad:~ $ df -h
Filesystem Size Used Avail Use% Mounted on
[...]
/dev/mapper/media-scratch
70G 48G 23G 68% /media/vlad/video/video
This was online resized from 50G to 70G, using:
$ sudo lvresize media/scratch -L 70G
$ sudo btrfsctl -r 70G /media/vlad/video/video
Version numbers:
$ btrfsctl
[...]
Btrfs v0.18-ge3b0f66
$ uname -a
Linux vlad 2.6.29-rc7 #1 Fri Mar 6 23:32:13 GMT 2009 x86_64 GNU/Linux
Unmounting and remounting the filesystem seems to make the new
space available for use again.
This is the second time I've had this happen to me now, so it seems
to be more-or-less reproducible, although I haven't deliberately tried
to trigger the behaviour yet.
Hugo.
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