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RE: Problems with many processes copying large directories across an XFS

To: Simon Matter <simon.matter@xxxxxxxxxxxxxxxx>
Subject: RE: Problems with many processes copying large directories across an XFS volume.
From: Adrian Head <adrian.head@xxxxxxxxxxxxxxx>
Date: Tue, 11 Sep 2001 11:12:35 +1000
Cc: linux-xfs@xxxxxxxxxxx
Sender: owner-linux-xfs@xxxxxxxxxxx
Again - thanks Simon for your time.

I have done ten's of tests now and I am getting a strong feeling that it
is the same problems described here from Steve Lord:
http://marc.theaimsgroup.com/?l=linux-xfs&m=99980808004670&w=2

Or the start of the thread:
http://marc.theaimsgroup.com/?l=linux-xfs&m=99919025308712&w=2

The reason I am almost convinced it is the same issue is that about
every 3 attempts I have only bdflush running and everything else in
deadlock. - I will have to follow the instructions and see what output I
get from kdb.

It appears that although they could only get it to crash with SCSI the
problem affects both SCSI & IDE.

I was going to short-cut the process and just download the cvs tree -
but for some reason the XFS site times-out at the moment.  I will try
later.

When your machine hangs - have you noticed any trends in what processes
are left running?

Adrian Head P/L


> -----Original Message-----
> From: Simon Matter [SMTP:simon.matter@xxxxxxxxxxxxxxxx]
> Sent: Tuesday, 11 September 2001 00:28
> To:   Adrian Head
> Cc:   linux-xfs@xxxxxxxxxxx
> Subject:      Re: Problems with many processes copying large
> directories acrossan XFS   volume.
> 
> 
> I tried 20, 40 and 80 simultanous cp with no crash. Then I changed the
> file tree and the new tree has ~280M small files with 100b-50kb size.
> When using 60 cp jobs the machine died. I could ping it but nothing
> more. No ssh, no console, no shutdown. I try some more tests tonight.
> I
> try the same with ext2 as well to make sure it's XFS and not Softraid.
> 
> -Simon
> 
> 


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