Re: Premature ENOSPC only with zlib Compression

On Wed, Jan 18, 2012 at 5:13 PM, Mitch Harder
[off-list ref] wrote:

I have a Btrfs partition that is reliably reproducing premature ENOSPC
when restoring the disk from a tar file, but it is only happening with
zlib compression (lzo or no compression proceeds normally).

Ive just unsquashfs'ed an 5GiB image on a fresh btrfs and a much
faster System using:

compress=lzo,noatime

and got ENOSPC again :(

so it doesnt matter if lzo or zlib: ENOSPC with compression enabled!

my kernel: vanilla 3.2.5

for testing, i suggest making a squashfs of your whole system "/" and
unsquashfs that image into a new subvolume.
this really seems to trigger this ENOSPC problem, because it creates
the files fast enough.

Ahmet