Gentoo Archives: gentoo-user

From: "Marc Stürmer" <mail@×××××××××××××.de>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] btrfs and sparse VM image files
Date: Mon, 19 May 2014 10:08:28
Message-Id: 5379D7E4.209@marc-stuermer.de
In Reply to: [gentoo-user] btrfs and sparse VM image files by Neil Bothwick
1 Am 18.05.2014 14:28, schrieb Neil Bothwick:
2
3 > I'm confused about the desirability of keeping VM image files, usually
4 > space qcow files, on a btrfs volume. I have read the advice about using
5 > chattr +C on the subvolume, but are there any other gotchas? The btrfs
6 > wiki says in one place that using sparse file on btrfs is not a good
7 > idea, but is that still the case. There is conflicting information out
8 > there, does anyone here have any hard experience?
9
10 Just take a look at the official Gotchas Page of BTRFS, which can be
11 found here:
12
13 https://btrfs.wiki.kernel.org/index.php/Gotchas
14
15 Putting virtual image files on Btrfs is something that the developers
16 still do not recommend at all, and that's with reason!
17
18 If you really do want to put them up a COW filesystem, you should try
19 ZFS on Linux instead, otherwise go with XFS or ext4 - in that kind of
20 order.
21
22 Frankly said, Btrfs in my humble opinion is just not ready for prime
23 time yet and will not be for a couple of year and if you really do want
24 a COW filesystem now, you should take a look at ZFS instead.

Replies

Subject Author
Re: [gentoo-user] btrfs and sparse VM image files Neil Bothwick <neil@××××××××××.uk>