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Re: XFS filesystem

From: <Chris.Phillips_at_email.protected>
Date: Wed, 2 Sep 2009 12:26:16 +1000

I'm working on it.

I don't think there is any point reformatting disks before hand other
than those which are already mounted. We can reformat disks as we swap
them - it is a 1min job max.

Cheers
Chris

On 02/09/2009, at 12:24 PM, Claire Hotan wrote:

>Hi guys,
>
>Remember, VLBI starts tomorrow and it'd be good if all the disks
>used could be reformatted to xfs prior to the run (not actually
>mandatory as we're not doing any 512mbps expts, but still, better to
>change them as soon as possible). So if you haven't already
>reformatted your disks, please follow Jamie's instructions below,
>and we'll need to get our scripts on the vsi machines updated before
>the next run. You can probably do each set immediately prior to each
>experiment if need be - just remember to do so!! :)
>
>Don't reformat any v271c disks yet, they're still under embargo.
>
>cheers,
>
>Claire
>
>
>-----Original Message-----
>From: Jamie Stevens [mailto:Jamie.Stevens_at_csiro.<!--nospam-->au]
>Sent: Fri 8/28/2009 7:12 AM
>To: Phillips, Chris (ATNF, Marsfield); Claire Hotan; Brett.Reid_at_utas.<!--nospam-->edu.au
>; Jamie.McCallum_at_utas.<!--nospam-->edu.au; Amy, Shaun (ATNF, Marsfield)
>Subject: XFS filesystem
>
>Hi all,
>
>Tuning the XFS filesystem is not as simple as just a format command,
>but
>it is still easy.
>
>To format a disk with XFS, I used the command (an example anyway):
>mkfs.xfs -f -l size=64m -L "ATNF V006B" /dev/sdc1
>
>Then to further increase performance, I mounted the disk with:
>mount -o noatime,nodiratime,logbufs=8 /dev/sdc1 /data/xraid0
>
>Of course, once the disk is formatted, you can just change fstab to
>remember these options:
>/dev/sdc1 /data/xraid0 xfs noatime,nodiratime,logbufs=8 0 0
>
>Jamie and Brett, you should alter mount_xraids_new.pl on hovsi and
>cdvsi
>to mount XFS disks with the new options.
>
>cheers
>Jamie
>
>

------------------------------------------------------------
Chris Phillips
CSIRO ATNF eVLBI project scientist
Office: (+61) (0)2 93724608 Mobile: (+61) (0)439487601
Received on 2009-09-02 12:26:35