From reading, I know that sync should only take a few hours, but at thecurrent rate mine will take 91 hours which seems like an insane amount of time. I am looking for any advice on this. Details follow:
Hardware:
Disks: 4 Seagate 200GB 7200 RPM ST3200822A
Controllers: 2 Promise Ultra133 TX2 IDE controllers, one disk on each channel, Ultra133 cables.
CPU: PIII - 450 Mhz.
MB: Abit BE-6II (intel 440 bx)
512MB Ram.
OS boots and runs off a Atlas 10k SCSI drive attached to an Adaptec U19160 scsi card.
Software: Debian Testing, kernel 2.6.3, mdadm -- whatever came with apt-get
I created the array using
#mdadm --create /dev/md0 --verbose --chunk=128 --level=5 --parity=left-symmetric --raid-devices=4 --spare-devices=0
I also tried bumping up /proc/sys/dev/raid/speed_limit_min to 100000
Output of #cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid5] [multipath] [raid6]
md0 : active raid5 hdk[3] hdi[2] hdg[1] hde[0]
586082688 blocks level 5, 128k chunk, algorithm 2 [4/4] [UUUU]
[=>...................] resync = 8.0% (15647744/195360896) finish=5491.2min speed=543K/sec
unused devices: <none>
Output of #mdadm --detail /dev/md0
Version : 00.90.01
Creation Time : Mon Mar 22 00:18:13 2004
Raid Level : raid5
Array Size : 586082688 (558.93 GiB 600.15 GB)
Device Size : 195360896 (186.31 GiB 200.05 GB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 0
Persistence : Superblock is persistent Update Time : Mon Mar 22 00:18:13 2004
State : clean, no-errors
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0 Layout : left-symmetric
Chunk Size : 128K Number Major Minor RaidDevice State
0 33 0 0 active sync /dev/hde
1 34 0 1 active sync /dev/hdg
2 56 0 2 active sync /dev/hdi
3 57 0 3 active sync /dev/hdk
UUID : 5152287c:34d31d31:19a993d7:946f87c9
Events : 0.2After this, I moved all the hardware to an Asus A7V MB, with a 1.3 Duron, and ran a stock Sarge install. I got Faster results, but still it is going to take about 18 hours to sync the set of disks. Now after about 5 hours in the new rig i Get:
debian:~# cat /proc/mdstat
Personalities : [raid5]
read_ahead 1024 sectors
md0 : active raid5 ide/host4/bus1/target0/lun0/disc[3] ide/host4/bus0/target0/lun0/disc[2] ide/host2/bus1/target0/lun0/disc[1] ide/host2/bus0/target0/lun0/disc[0]
586082688 blocks level 5, 128k chunk, algorithm 2 [4/4] [UUUU]
[======>..............] resync = 30.2% (59040244/195360896) finish=781.7min speed=2904K/sec
unused devices: <none>
Based on things I have read this seems way too long. I must be screwing up some where I can't see.
Any help at all is appreciated. Quite a few hours of googling has yielded little.
- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
