Re: Benchmark: Dell/Perc 6, 8 disk RAID 10

From: Justin <justin(at)emproshunts(dot)com>
To: Craig Ringer <craig(at)postnewspapers(dot)com(dot)au>
Cc: Dave Cramer <pg(at)fastcrypt(dot)com>, Craig James <craig_james(at)emolecules(dot)com>, Greg Smith <gsmith(at)gregsmith(dot)com>, pgsql-performance(at)postgresql(dot)org
Subject: Re: Benchmark: Dell/Perc 6, 8 disk RAID 10
Date: 2008-03-17 16:31:15
Message-ID: 47DE9CD3.9000306@emproshunts.com
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Well every thing worked right up to the point where i tried to mount the
file system

Warning: xfs_db: /dev/sdb1 contains a mounted file system

fatal error -- couldn't initialize XFS library.

think i'm missing something???

Craig Ringer wrote:
> Justin wrote:
>
>> OK i'm showing my ignorance of linux. On Ubuntu i can't seem to figure
>> out if XFS file system is installed, if not installed getting it
>> installed.
>>
>
> There are two parts to the file system, really. One is the kernel driver
> for the file system. This is almost certainly available, as it will ship
> with the kernel. It might be a module that is loaded on demand or it
> might be compiled into the kernel its self.
>
> On my Debian Etch system it's a module, xfs.ko, that can be loaded
> manually with:
>
> modprobe xfs
>
> ... however, you should not need to do that, as it'll be autoloaded when
> you try to mount an xfs volume.
>
> The other part to the file system is the userspace tools for creating,
> checking, resizing, etc the file system. An `apt-cache search xfs' shows
> that these tools have the package name xfsprogs, at least on Debian.
>
> You can install them with "apt-get install xfsprogs". If they're already
> installed no action will be taken.
>
> When xfsprogs is installed you can use mkfs.xfs (see: man mkfs.xfs) to
> format a block device (say, a partition like /dev/sda1 or an LVM logical
> volume like /dev/SOMELVMVG/somelvmlv) with the xfs file system.
>
> Once the file system is formatted you can mount it manually with the
> mount command, eg:
>
> mkdir /mnt/tmp
> mount -t xfs /dev/sda1 /mnt/tmp
>
> ... or have it mounted on boot using an fstab entry like:
>
> /dev/sda1 /path/to/desired/mountpoint xfs defaults 0 0
>
> --
> Craig Ringer
>
>

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