From: Dmitri Nikulin <dnikulin@gmail.com>
To: Chris Mason <chris.mason@oracle.com>,
linux-btrfs <linux-btrfs@vger.kernel.org>
Subject: Re: btrfs and swap files on SSD's ?
Date: Wed, 21 Jan 2009 00:51:22 +1100 [thread overview]
Message-ID: <3a7f57190901200551s7e9ee262mc3720b5b1452b8dc@mail.gmail.com> (raw)
In-Reply-To: <1232456536.15042.0.camel@think.oraclecorp.com>
On Wed, Jan 21, 2009 at 12:02 AM, Chris Mason <chris.mason@oracle.com> wrote:
> There are patches to support swap over NFS that might make it safe to
> use on btrfs. At any rate, it is a fixable problem.
FreeBSD has been able to run swap over NFS for as long as I can
remember, what is different in Linux that makes it especially
difficult?
I've read that swap over non-trivial filesystems is hazardous as it
may lead to a situation in which memory allocation can fail in the
swap/FS code that was meant to make allocation possible again.
If btrfs is to take the role of a RAID and volume manager, it would
certainly be very useful to be able to run swap on it, since that
frees up other volumes from an administrative standpoint.
--
Dmitri Nikulin
Centre for Synchrotron Science
Monash University
Victoria 3800, Australia
next prev parent reply other threads:[~2009-01-20 13:51 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-17 0:10 btrfs and swap files on SSD's ? Chris Samuel
2009-01-19 16:22 ` Chris Mason
2009-01-20 10:41 ` Kaspar Schleiser
2009-01-20 13:02 ` Chris Mason
2009-01-20 13:51 ` Dmitri Nikulin [this message]
2009-01-20 14:31 ` Chris Mason
2009-01-20 16:35 ` Anthony Roberts
2009-01-20 16:41 ` Chris Mason
2009-01-21 6:15 ` Andi Kleen
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