Amanda-Users

Re: disk was stranded on waitq

2006-07-06 20:37:54
Subject: Re: disk was stranded on waitq
From: Paul Bijnens <paul.bijnens AT xplanation DOT com>
To: jdanderson AT lbl DOT gov
Date: Fri, 07 Jul 2006 02:32:29 +0200
jeffrey d anderson schreef:
On Thursday 06 July 2006 14:41, Jon LaBadie wrote:
On Thu, Jul 06, 2006 at 10:49:22PM +0200, Peter Kunst wrote:
Hi list,

ever seen something like this in amstatus output ?

 matrix:/var/lib/backuppc 0 planner: [hmm, disk was stranded on waitq]

This is a new debian box, which (guess it :) runs BackupPC, and was
taken into amanda's disklist today. This DLE should have around ~60GB.

On this client, there is a "tar [foobar] --file /dev/null [barfoo]"
still running now, and i guess amanda runs into etimeout. However, never
seen this message since running amanda (~3 years now). Not an urgent
issue, since i'm just moving over amanda from an old amanda-server to a
new one with another robot attached.
A tar run to output file "--file /dev/null"
is part of the estimate phase.

Tar senses the /dev/null output and only looks
at directory blocks and inodes.  Doesn't read
the data blocks for other files.

Never saw the "stranded" message.
Wonder which tropical island it is on :)

I've encountered the "stranded" message. In my case there were several DLEs for that host. One of them was taking forever to dump, which was blocking the dumps of the other DLEs.

As it turned out, the LONG dump time in my case was due to /var/log/lastlog (a sparse file with apparent size of 1.2TB on a 64bit machine). tar was unable to deal with it. The only solution I found was to explicitely exclude it.


Probably gnutar 1.14.X   I believe it is solved in gnutar 1.15.1
(And RH has backported those patches into their 1.14 gtar too.)


--
Paul Bijnens, Xplanation                            Tel  +32 16 397.511
Technologielaan 21 bus 2, B-3001 Leuven, BELGIUM    Fax  +32 16 397.512
http://www.xplanation.com/          email:  Paul.Bijnens AT xplanation DOT com
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