From: Mike Fedyk <mfedyk@matchmail.com>
To: linux-kernel@vger.kernel.org
Subject: Raid5 resync slow with one linear array
Date: Mon, 1 Apr 2002 18:28:22 -0800 [thread overview]
Message-ID: <20020402022822.GA961@matchmail.com> (raw)
Hi,
I just setup a 4 (5 really) drive raid5 array.
It is syncing up right now and nothing else is running on the system.
I have three 18GB SCA scsi drives and 2x9GB linear array in a four "drive"
raid5 array.
Unfortunately, it is syncing up quite slowly. Only about 2MB/sec on a
40MB/sec array. The system is idle.
2.4.19-pre4-ac3
Is there something about this config that says "Don't do that!"? I've
heard about RAID10, but not Linear+RAID5...
This way, I get more space, and one filesystem (except a 50mb raid1 for
booting).
Thanks
Mike
Personalities : [linear] [raid0] [raid1] [raid5]
read_ahead 1024 sectors
md2 : active raid1 scsi/host0/bus0/target1/lun0/part1[1] scsi/host0/bus0/target0/lun0/part1[0]
48064 blocks [2/2] [UU]
md1 : active linear scsi/host0/bus0/target0/lun0/part2[1] scsi/host0/bus0/target1/lun0/part2[0]
17671296 blocks 32k rounding
md0 : active raid5 md/1[4] scsi/host0/bus0/target4/lun0/part2[2] scsi/host0/bus0/target3/lun0/part2[1] scsi/host0/bus0/target2/lun0/part2[0]
52990080 blocks level 5, 32k chunk, algorithm 2 [4/3] [UUU_]
[>....................] recovery = 2.1% (373984/17663360) finish=143.2min speed=2010K/sec
unused devices: <none>
next reply other threads:[~2002-04-02 2:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-04-02 2:28 Mike Fedyk [this message]
[not found] ` <Pine.LNX.4.44.0204020630140.1152-100000@pc24.sr.bham.ac.uk>
2002-04-03 0:52 ` Raid5 resync slow with one linear array Mike Fedyk
[not found] ` <Pine.LNX.4.44.0204042255040.8182-100000@pc24.sr.bham.ac.uk>
2002-04-04 22:04 ` Mike Fedyk
2002-04-04 4:03 ` Neil Brown
2002-04-04 22:56 ` Mike Fedyk
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