Subject: Re: Why my life is sucking.
To: Brett Lymn <email@example.com>
From: Herb Peyerl <firstname.lastname@example.org>
Date: 01/15/2001 20:35:33
email@example.com (Brett Lymn) wrote:
> Interesting, I just bought a 800MHz PIII and 1 45G IDE disk. I copied
> about 6Gig or so off my old machine's SCSI disk using dump/restore onto the
> new IDE disk without noticable performance problems.
there's no performance problem with dump/restore. there's a file-lossage
problem with dump/restore. There's a performance problem with 'mkdir' on
a raid1 filesystem.
> Silly question - you _do_ have the IDE disks on separate channels
> don't you? What is your performance like if you split the mirror? (I
> know that may not be desirable but it may help to cut out some culprits)
I fail to see how that would cause only mkdir to take 17 seconds but everything
else to operate at full-speed.
> try using the 's' option with dump, I normally do something like:
> dump 0sf 1000000 - / | (cd /mnt && restore xf - )
> may help just in case dump has gone whacko and is trying to put
> everything into QIC150 sized chunks.
again, unless that results in missing files that are hard-links to other
files, I don't think that's going to solve the problem.