Date: Mon, 01 Sep 2008 18:31:36 -0400 From: Mike Tancsa <mike@sentex.net> To: Jeremy Chadwick <koitsu@FreeBSD.org>, Kevin Oberman <oberman@es.net> Cc: Derek =?iso-8859-1?Q?Kuli=C5?= ?ski <takeda@takeda.tk>, Michael <freebsdports@bindone.de>, freebsd-stable@FreeBSD.org Subject: Re: bin/121684: : dump(8) frequently hangs Message-ID: <200809012231.m81MVTJK048487@lava.sentex.ca> In-Reply-To: <20080901213856.GA17155@icarus.home.lan> References: <200809011336.m81Da5BT046532@lava.sentex.ca> <20080901160013.0005F4500F@ptavv.es.net> <20080901213856.GA17155@icarus.home.lan>
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At 05:38 PM 9/1/2008, Jeremy Chadwick wrote:
>Can someone explain what "dump frequently hangs" actually means?
>
>Does it lock up the entire machine indefinitely (and if so, how long did
>you wait for it to (hopefully) recover)?
As in the process hanging. For me, it was fixed quite some time ago.
[zoo]# ps -auxlww | grep dump
root 32093 0.0 3.8 39972 38036 ?? D Fri11PM 0:00.43
/sbin/dump -C24 0 1 0 20 0 pause
root 73970 0.0 2.7 28708 26688 ?? D Thu11PM 0:00.14
/sbin/dump -C24 0 1 1 20 0 pause
root 80852 0.0 3.8 39972 38000 ?? D 11:30PM 0:18.43
/sbin/dump -C24 0 1 0 20 0 pause
root 98637 0.0 0.1 3308 1040 pd RL+ 8:20AM 0:00.00 grep
dump 0 72305 0 96 0 -
[zoo]# kill -9 80852
[zoo]# kill -9 80852
[zoo]# kill -9 80852
[zoo]# ps -auxlww | grep dump
root 32093 0.0 3.8 39972 38036 ?? D Fri11PM 0:00.43
/sbin/dump -C24 0 1 0 20 0 pause
root 73970 0.0 2.7 28708 26688 ?? D Thu11PM 0:00.14
/sbin/dump -C24 0 1 1 20 0 pause
root 80852 0.0 3.8 39972 38000 ?? D 11:30PM 0:18.43
/sbin/dump -C24 0 1 0 20 0 pause
root 98639 0.0 0.1 3308 1040 pd R+ 8:20AM 0:00.00 grep
dump 0 72305 0 96 0 -
[zoo]#
>[1]: rsync is great for backups, and very fast, but there's the issue of
>modifying atimes. I committed a patch to ports/net/rsync which adds an
>--atimes flag, except its behaviour is not what you'd expect: the file
>which was copied, at the destination, has the correct atime (of the
>source), but the source itself ends up getting its atime modified, so
>you're essentially destroying the atime data on the source.
One of the reasons I dont use it for backups. Also its a pain with
things like /dev and other special files.
---Mike
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