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Re: >1 TB RAID servers

To: Austin Gonyou <austin@xxxxxxxxxxxxxxx>
Subject: Re: >1 TB RAID servers
From: Joshua Baker-LePain <jlb17@xxxxxxxx>
Date: Thu, 25 Mar 2004 16:52:40 -0500 (EST)
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>, Christian Guggenberger <christian.guggenberger@xxxxxxxxxxxxxxxxxxxxxxxx>, Steve Lord <lord@xxxxxxx>, Daryl Herzmann <akrherz@xxxxxxxxxxx>, XFS List <linux-xfs@xxxxxxxxxxx>
In-reply-to: <1080251104.5480.23.camel@localhost.localdomain>
References: <20040325213951.A28961@infradead.org> <1080251104.5480.23.camel@localhost.localdomain>
Sender: linux-xfs-bounce@xxxxxxxxxxx
On Thu, 25 Mar 2004 at 3:45pm, Austin Gonyou wrote

> We still use that old 2.4.19 stuff on volumes that are 1.5T max. Going
> to about 1.7T we notice issues for sure, mainly in the properly reported
> size. it might show up as 300M, or 1T. 1.5 is the max we've been able to
> get away with and not have issues of that nature.

Well, to start a list of "it works" combos:

3ware Storage Controller device driver for Linux v1.02.00.036.
2.4.21 with XFS 1.3
software raid0

[jlb@buckbeak jlb]$ sudo fdisk -l /dev/sda

Disk /dev/sda: 255 heads, 63 sectors, 135155 cylinders
Units = cylinders of 16065 * 512 bytes

   Device Boot    Start       End    Blocks   Id  System
/dev/sda1   *         1       323   2594466   83  Linux
/dev/sda2           324       584   2096482+  83  Linux
/dev/sda3           585       715   1052257+  83  Linux
/dev/sda4           716    134389 1073736405   fd  Linux raid autodetect

[jlb@buckbeak jlb]$ df
Filesystem           1k-blocks      Used Available Use% Mounted on
/dev/sda1              2553696   1971992    451984  82% /
/dev/sdb1              2553696     35300   2388676   2% /home
none                   1034408         0   1034408   0% /dev/shm
/dev/sda3              1035692     38588    944492   4% /tmp
/dev/sda2              2063536     38736   1919976   2% /usr/local
/dev/sdb3              1035692    233436    749644  24% /var
/dev/md0             2147341312 1140921464 1006419848  54% /emfd

As you can see, I had to limit to size of sd?4 a bit to stay under the 2TB 
limit, but this combo is rock solid, and was with the XFS 1.2 release as 
well (I ran the RH based kernel then).

-- 
Joshua Baker-LePain
Department of Biomedical Engineering
Duke University


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