Am 18.05.2014 14:28, schrieb Neil Bothwick:
I'm confused about the desirability of keeping VM image files, usually
space qcow files, on a btrfs volume. I have read the advice about using
chattr +C on the subvolume, but are there any other gotchas? The btrfs
wiki says in one place that using sparse file on btrfs is not a good
idea, but is that still the case. There is conflicting information out
there, does anyone here have any hard experience?
Just take a look at the official Gotchas Page of BTRFS, which can be
found here:
https://btrfs.wiki.kernel.org/index.php/Gotchas
Putting virtual image files on Btrfs is something that the developers
still do not recommend at all, and that's with reason!
If you really do want to put them up a COW filesystem, you should try
ZFS on Linux instead, otherwise go with XFS or ext4 - in that kind of
order.
Frankly said, Btrfs in my humble opinion is just not ready for prime
time yet and will not be for a couple of year and if you really do want
a COW filesystem now, you should take a look at ZFS instead.
