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Re: [BUG]XFS at CONFIG_SCSI_MULTI_LUN

To: linux-xfs@xxxxxxxxxxx
Subject: Re: [BUG]XFS at CONFIG_SCSI_MULTI_LUN
From: Fang Han <dfbb@xxxxxxxxxxxx>
Date: Fri, 19 Oct 2001 10:21:54 +0800
In-reply-to: <4.3.2.7.2.20011018114511.03712c38@xxxxxxxxxxxxx>; from knuffie@xxxxxxxxx on Thu, Oct 18, 2001 at 12:01:41PM +0200
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References: <20011018173211.C1476@xxxxxxxxxxxx> <4.3.2.7.2.20011018114511.03712c38@xxxxxxxxxxxxx>
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On Thu, Oct 18, 2001 at 12:01:41PM +0200, Seth Mos wrote:
> At 17:32 18-10-2001 +0800, Fang Han wrote:
> >Hi, I find an very strange bug, And it is reproduce-able.
> >
> >I have an machine with Adaptec 7899p card, And two scsi harddisk on one
> >scsi ID. It means I need use CONFIG_SCSI_MULTI_LUN options on
> >kernel. My kernel is SGI_XFS_1.0.1, I just enable the options, And
> >recompile it using RedHat 7.1 default gcc-2.9.6-85.
> 
> Can you recompile with gcc-2.91.66 (kgcc)
> 

After recompile with kgcc, The mount cause kernel oops.

And complain "XFS: fail to read root inode"

> >My scsi harddisk shows to be sda sdb
> >
> >When I run this script:
> >mkfs.xfs /dev/sdb1
> >time mount -t xfs /dev/sdb1 /mnt
> >
> >I got this output
> >
> >real    0m9.340s
> >user    0m0.000s
> >sys     0m0.000s
> 
> Is the read an write speed also very slow?
> 
> Why do you want two harddisks on one scsi ID perse?
> 
> >So the question is very clear, mount an XFS on the MULTI_LUN scsi
> >device is very slow. Who know the reason?
> >
> >Dan
> 
> --
> Seth
> Every program has two purposes one for which
> it was written and another for which it wasn't
> I use the last kind.
> 


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