You missed something!
"State : dirty, no-errors"
Mark,
If you want, send the output of these 2 commands:
cat /proc/mdstat
mdadm -D /dev/md?
Don't forget, with versions of md (or mdadm) older than about 6 months, the
counts get really off!
My 14 disk array is fine..... Note the: "no-errors"!
But:
/dev/md2:
Version : 00.90.00
Creation Time : Fri Dec 12 17:29:50 2003
Raid Level : raid5
Array Size : 230980672 (220.28 GiB 236.57 GB)
Device Size : 17767744 (16.94 GiB 18.24 GB)
Raid Devices : 14 <<LOOK HERE>>
Total Devices : 12 <<LOOK HERE>>
Preferred Minor : 2
Persistence : Superblock is persistent
Update Time : Wed Oct 13 01:55:40 2004
State : dirty, no-errors <<LOOK HERE>>
Active Devices : 14 <<LOOK HERE>>
Working Devices : 11 <<LOOK HERE>>
Failed Devices : 1 <<LOOK HERE>>
Spare Devices : 0 <<LOOK HERE>>
Layout : left-symmetric
Chunk Size : 64K
Number Major Minor RaidDevice State
0 8 49 0 active sync /dev/sdd1
1 8 145 1 active sync /dev/sdj1
2 8 65 2 active sync /dev/sde1
3 8 161 3 active sync /dev/sdk1
4 8 81 4 active sync /dev/sdf1
5 8 177 5 active sync /dev/sdl1
6 8 97 6 active sync /dev/sdg1
7 8 193 7 active sync /dev/sdm1
8 8 241 8 active sync /dev/sdp1
9 8 209 9 active sync /dev/sdn1
10 8 113 10 active sync /dev/sdh1
11 8 225 11 active sync /dev/sdo1
12 8 129 12 active sync /dev/sdi1
13 8 33 13 active sync /dev/sdc1
UUID : 8357a389:8853c2d1:f160d155:6b4e1b99
#cat /proc/mdstat
Personalities : [raid1] [raid5]
read_ahead 1024 sectors
md2 : active raid5 sdc1[13] sdi1[12] sdo1[11] sdh1[10] sdn1[9] sdp1[8]
sdm1[7] sdg1[6] sdl1[5] sdf1[4] sdk1[3] sde1[2] sdj1[1] sdd1[0]
230980672 blocks level 5, 64k chunk, algorithm 2 [14/14]
[UUUUUUUUUUUUUU]
Guy
-----Original Message-----
From: linux-raid-owner@xxxxxxxxxxxxxxx
[mailto:linux-raid-owner@xxxxxxxxxxxxxxx] On Behalf Of Gerd Knops
Sent: Monday, October 18, 2004 1:37 AM
To: Marc
Cc: linux-raid@xxxxxxxxxxxxxxx
Subject: Re: Poor RAID5 performance on new SMP system
On Oct 17, 2004, at 21:11, Marc wrote:
> Hi,
> I recently upgraded my file server to a dual AMD 2800+ on a Tyan Tiger
> MPX
> motherboard. The previous server was using a PIII 700 on an Intel 440BX
> motherboard. I basically just took the IDE drives and their controllers
> across to the new machine. The strange thing is that the RAID-5
> performance
> is worse than before! Have a look at the stats below:
>
[..]
> State : dirty, no-errors
> Active Devices : 4
> Working Devices : 4
> Failed Devices : 1
> Spare Devices : 0
>
Unless I am missing something, a disk is missing and the RAID runs in
degraded (=slower) mode.
Gerd
-
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
-
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
