Dual Athlon 2000MP
3G Memory
FiberChannel qla2100 interface.
Almost 2TB
Running for about a year now with no problems. Used for data mining development (a fair# of files).
ext3 filesystem on RAID5
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/md6 1949323256 1563695060 366125948 82% /usr6
md6 : active raid5 sdt1[12] sdl1[0] sdk1[11] sdj1[10] sdi1[9] sdh1[8] sdg1[7] sdf1[6] sde1[5] sdd1[4] sda1[3] sdc1[2] sdb1[1]
1950225024 blocks level 5, 128k chunk, algorithm 2 [12/12] [UUUUUUUUUUUU]
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/md6 6190080 401503 5788577 7% /usr6
Done 6/21/02
Linux 2.4.19-pre10 #1 SMP Tue Jun 11 07:04:12 EDT 2002 i686 unknown
tiobench.pl --size 4000
Size is MB, BlkSz is Bytes, Read, Write, and Seeks are MB/secd . -T
File Block Num Seq Read Rand Read Seq Write Rand Write
Dir Size Size Thr Rate (CPU%) Rate (CPU%) Rate (CPU%) Rate (CPU%)
------- ------ ------- --- ----------- ----------- ----------- -----------
. 4000 4096 1 123.2 98.7% 1.090 1.25% 58.23 83.5% 2.755 2.64%
. 4000 4096 2 116.9 94.4% 1.413 1.85% 57.80 102.% 2.759 3.09%
. 4000 4096 4 117.3 95.9% 1.749 2.31% 56.49 104.% 2.760 3.53%
. 4000 4096 8 116.3 96.0% 2.092 2.77% 48.26 91.1% 2.760 3.84%
----- Original Message -----
From: "Andy Arvai" <arvai@scripps.edu>
To: <linux-raid@vger.kernel.org>
Sent: Tuesday, February 11, 2003 4:25 AM
Subject: filesystems for large arrays
> Hi,
>
> Does anyone have comments about the various filesystems typically used
> with large (terabyte) arrays, regarding performance and reliability?
>
> The three most common filesystems seem to be ext3, reiser and xfs. Ext3
> and reiser are part of the standard linux kernel (not sure about xfs),
> implying that they are fairly robust. I've been using reiser and
> haven't had any problems, but I've heard that when the filesystem gets
> full there may be problems and it's also optimized for many small files
> instead of larger files. Ext3 sounds like it is very robust (since it
> is based on ext2), although I've heard the performance is worse than
> reiser. I've heard some good things about xfs, but have never used it.
>
> If anyone has any real-world experiences or benchmarks I would be
> interested.
>
> Andy
>
>
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