From: Stan Hoeppner <stan@hardwarefreak.com>
To: Gavin Flower <gavinflower@yahoo.com>
Cc: linux-raid@vger.kernel.org, neilb@suse.de, mb@gem.win.co.nz
Subject: Re: Best way to create RAID-6 for swap partition - existing one failed
Date: Wed, 18 May 2011 13:59:31 -0500 [thread overview]
Message-ID: <4DD41713.5070407@hardwarefreak.com> (raw)
In-Reply-To: <595104.28955.qm@web65106.mail.ac2.yahoo.com>
On 5/16/2011 4:41 PM, Gavin Flower wrote:
> Motivation, existing RAID-6 swap partition failed. I am thinking I should recreate it in a new format, as currently it is 'Version : 0.90', rather than simply rebuild it.
<snip>
Forget using a partition. Simply use a swap file. This example creates
a 1GB swap file in the / filesystem. You can locate it on any
filesystem you wish.
# swappoff -a
# dd if=/dev/zero of=/swapfile1 bs=1024 count=1048576
# mkswap /swapfile1
# swapon /swapfile1
# vi /etc/fstab
Add:
/swapfile1 swap swap defaults 0 0
and remove your old entry for the failed swap partition.
There is little performance difference between swap files and swap
partitions with modern kernels. The kernel will map the disk location
of the swap file and perform direct disk access, bypassing the
filesystem and buffer cache.
--
Stan
next prev parent reply other threads:[~2011-05-18 18:59 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-16 21:41 Best way to create RAID-6 for swap partition - existing one failed Gavin Flower
2011-05-18 15:01 ` David Brown
2011-05-18 18:59 ` Stan Hoeppner [this message]
2011-05-18 19:57 ` likewhoa
2011-05-18 20:32 ` Gavin Flower
2011-05-18 20:59 ` likewhoa
2011-05-18 20:13 ` Gavin Flower
2011-05-18 21:53 ` Stan Hoeppner
2011-05-18 22:31 ` Gavin Flower
2011-05-18 23:01 ` Stan Hoeppner
2011-05-18 20:42 ` Gavin Flower
2011-05-18 22:26 ` Stan Hoeppner
2011-05-18 22:55 ` Gavin Flower
2011-05-19 0:11 ` Gavin Flower
2011-05-19 2:26 ` Stan Hoeppner
2011-05-19 2:50 ` Gavin Flower
2011-05-19 3:28 ` Stan Hoeppner
2011-05-19 4:05 ` Gavin Flower
2011-05-19 8:17 ` Stan Hoeppner
2011-05-20 3:32 ` Leslie Rhorer
2011-05-19 9:04 ` Gordon Henderson
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