Gentoo Archives: gentoo-user

From: Florian Philipp <lists@×××××××××××.net>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] the best filesystem for server: XFS or JFS (or?)
Date: Wed, 23 Mar 2011 17:08:42
Message-Id: 4D8A283B.8080805@binarywings.net
In Reply to: Re: [gentoo-user] the best filesystem for server: XFS or JFS (or?) by "Mr. Jarry"
1 Am 23.03.2011 14:04, schrieb Mr. Jarry:
2 > On Wed, Mar 23, 2011 at 10:09 AM, Volker Armin Hemmann
3 > <volkerarmin@××××××××××.com> wrote:
4 >
5 >> And if you don't care about barriers, jfs might be a good choice.
6 >
7 > Knowing nothing about "barriers" I tried to find some info and
8 > came accross this article:
9 >
10 > http://searchenterpriselinux.techtarget.com/tip/Deciding-when-to-use-Linux-file-system-barriers
11 >
12 > It says, barriers can not work with device mapper (raid, lvm).
13 > If it is true (?) then because of having all partitions in raid1 (md),
14 > I need not worry about barriers. Whatever filesystem I picked out,
15 > I could not use barriers...
16 >
17 > Jarry
18 >
19
20
21 Kernel changes claim barrier support for DM and MD beginning at 2.6.33 [1].
22
23 Some support was also added in 2.6.31, 2.6.30 and 2.6.29.
24
25 This thread [2] leaves me with the impression that the same patches
26 providing support in DM and MD also solved the issue for LVM.
27
28 The article you cite might be correct in the context of RHEL-5.5 and
29 SLED-10 which use a much older kernel (2.6.24 if I'm not mistaken).
30
31 [1] http://kernelnewbies.org/Linux_2_6_33
32 [2] http://lwn.net/Articles/326597/
33
34 Also interesting:
35 http://lwn.net/Articles/400541/
36
37 Hope this helps,
38 Florian Philipp

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