Subject: Re: Why my life is sucking.
To: Herb Peyerl <firstname.lastname@example.org>
From: Manuel Bouyer <email@example.com>
Date: 01/16/2001 21:59:04
On Mon, Jan 15, 2001 at 03:18:15PM -0700, Herb Peyerl wrote:
> > Manuel Bouyer <firstname.lastname@example.org> wrote:
> > > nlager# time mkdir foo
> > > 0.0u 0.6s 0:17.72 3.8% 0+0k 3687+7io 0pf+0w
> > And is the machine hung during this time ?
> other disk accesses are blocked, yes. I've confirmed that the parity is
> clean on the raid partition and that everything is otherwise idle. I've
> also tried it with one of the components failed. No change. I built a
> regular filesystem on one of the components and untarred pkgsrc.tar.gz
> (my benchmark for reproducing this problem) and it literally screamed
> along and worked flawlessly.
Ok, I think this is definitively a raidframe bug.
Silly idea: could you try to slow down your machine and see if you can
reproduce it (disable caches in BIOS for example). Yes, I think this can
be timing related :)
Raidframe/raid1 works fine for me on a bunch of machines, exept the minor
annoyance on the alpha I reported, which looks similar to your problem. But
now that I think about it, the alpha could really be the fastest machines of
all the ones I have with raidframe (it competes with a PIII/700 but the
alpha is clearly superior in I/O ...), but your 800Mhz machine with recent IDE
disks may be a bit faster than my alpha.
> > > dump 0f - /dev/rraid1a | ( cd /mnt ; restore -if - )
> > > [...]
> > > I've duplicated this 3 times and each time the same files don't get copied. I
> > > illustrate with /sbin as an example but the lossage is everywhere. My 1G
> > > /home partition is different by about 100MB between /home and /mnt/home.
> > Is the filesystem you copy mouted ? Maybe a mounted partiton, with some
> > activity, could produce problems like that. With softdep it could even be
> > worse.
> /dev/rraid1a is my root filesystem. The system is otherwise quiescant. In
> fact, I can reproduce the problem in single-user mode. I don't have
> softdep enabled.
With rraid1a mounted RO ?
> > > Non-unique normal route, mask not entered<3>Non-unique normal route, ma
> > sk not entered<3>Non-unique normal route, mask not entered
> > >
> > Seems to be from net/radix.c. Is your network config sane ?
> > An ipv6 problem, maybe ?
> My network config is sane as far as I'm aware:
> fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> address: 00:d0:b7:26:ab:f8
> media: Ethernet 100baseTX
> status: active
> inet 18.104.22.168 netmask 0xffffff00 broadcast 22.214.171.124
> inet6 fe80::2d0:b7ff:fe26:abf8%fxp0 prefixlen 64 scopeid 0x1
> Greg Oster suggested my problems with dump/restore leaving out files might
> be related to the files that have been left out are all ones that have hard
> links. ie: mount_ufs, newfs, swapctl, swapon, etc.
I can't reproduce this either ...
Did you try to dump to a file, and then restore from that file ?
Manuel Bouyer <email@example.com>