misc/66270: dump causes machine freeze
dane foster
dene at slush.ca
Tue May 4 22:50:28 PDT 2004
The following reply was made to PR misc/66270; it has been noted by GNATS.
From: dane foster <dene at slush.ca>
To: Kris Kennaway <kris at obsecurity.org>
Cc: freebsd-gnats-submit at FreeBSD.org
Subject: Re: misc/66270: dump causes machine freeze
Date: Wed, 5 May 2004 17:41:36 +1200
Sorry, a bit more detail.
First, Im using the snapshot feature of dump (dump L). Second, approx.
30 seconds after i start the dump, the entire machine freezes
completely. No network, no keyboard. it requires a hard reset. This
happens on two separate machines.
Its a bit difficult to debug, as there's no error message before/after
the machine freezes. Also, this is a production machine (mail server,
and db host). Mucking about with it is sort of frowned upon.
If there's any info i can provide, let me know and i'll see what i can
do, crashing either host more than once or twice a week is bad though
;)
/dane
On May 5, 2004, at 5:04 PM, Kris Kennaway wrote:
> Dane Foster wrote:
>
>>> Number: 66270
>>> Category: misc
>>> Synopsis: dump causes machine freeze
>>> Confidential: no
>>> Severity: serious
>>> Priority: medium
>>> Responsible: freebsd-bugs
>>> State: open
>>> Quarter: Keywords: Date-Required:
>>> Class: sw-bug
>>> Submitter-Id: current-users
>>> Arrival-Date: Tue May 04 18:30:20 PDT 2004
>>> Closed-Date:
>>> Last-Modified:
>>> Originator: Dane Foster
>>> Release: 5.2.1
>>> Organization:
>>> Environment:
>> FreeBSD homer.connect.com.fj 5.2.1-RELEASE FreeBSD 5.2.1-RELEASE #0:
>> Tue May 4 22:38:11 FJT 2004
>> root at homer.connect.com.fj:/usr/src/sys/i386/compile/IBM i386
>>> Description:
>
>> dump (called via amanda) with snapshots on a large, volatile
>> filesystem causes the machine to freeze. no errors reported
>
> This PR contains even less information that your non-PR email, but
> what you're describing sounds like intended behaviour. Specifically,
> creating a snapshot causes all other filesystem access to pause until
> the creation is complete, which can take a long time on large or
> active filesystems.
>
> Can you please confirm that if you wait long enough the operation
> completes?
>
> Kris
>
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