[Ocfs-users] copying files from ocfs to ext3

[Sunil Mushran]

ocfs-2.4.9-e-smp-1.0.12-1 is for AS2.1. Unsure how you can use that
on a RHEL3 box.

Other than that, ensure you have the latest coreutils.

cp --o_direct=128K,0 /ocfs /ext3
It will read in 128K chunks.

Michael Aubertin wrote:
> Hi David,
>
> It smell like some scsi driver congestion. First of all,
>  you can try to set greater value (such 256) to both max and min readahead. 
> (see sysctl)
> One idea could be to set the elevator to "deadline" or "as" if SAS drive(i.e: Kernel append).
> Other could be to mount the ext3 with option such -o  reservation,noatime,nodiratime
>
>
> Good luck
>
> Michael.
> michael.aubertin at gmail.com
>
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> Received:11/27/06 16:08
> From:David Sharples <davidsharples at gmail.com>
> To:ocfs-users at oss.oracle.com
> Cc:
> Subject:[Ocfs-users] copying files from ocfs to ext3
>
> Hi, using ocfs-2.4.9-e-smp-1.0.12-1 on Redhat 3 U4
>
> Trying to copy files from an ocfs volume to an ext3 volume is very very slow
> - talking a couple of minutes for a 100Mb file.
> same happens if I use o-direct or not, dd exhibits the same behaviour
>
> ocfs is in the updatedb.conf and both filesystems are in the PRUNEPATHS line
> in the same file (a reboot was done after the changes were made just to make
> sure)
>
> Coping from ocfs to ocfs is very quick as is copying from ext3 to ext3
>
> Any ideas where I can look?
>
> Thanks
>
> Dave
>
>
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