Date: Tue, 4 May 2004 23:00:35 -0700 (PDT) From: dane foster <dene@slush.ca> To: freebsd-bugs@FreeBSD.org Subject: Re: misc/66270: dump causes machine freeze Message-ID: <200405050600.i4560Z1V095384@freefall.freebsd.org>
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The following reply was made to PR misc/66270; it has been noted by GNATS.
From: dane foster <dene@slush.ca>
To: Kris Kennaway <kris@obsecurity.org>
Cc: freebsd-gnats-submit@FreeBSD.org
Subject: Re: misc/66270: dump causes machine freeze
Date: Wed, 5 May 2004 17:53:30 +1200
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One more thing before I forget, I've made two small modifications to
dump's main.c
One mod to default to always snapshot, and one mod to hardcode the path
to mksnap_ffs, I'll attach the diff
I appreciate you looking into this, and once again, any more info I can
provide, just let me know.
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--- main.c Sun Apr 25 13:30:06 2004
+++ main.c.orig Sun Nov 16 20:01:58 2003
@@ -75,7 +75,7 @@
#include "pathnames.h"
int notify = 0; /* notify operator flag */
-int snapdump = 1; /* dumping live filesystem, so use snapshot */
+int snapdump = 0; /* dumping live filesystem, so use snapshot */
int blockswritten = 0; /* number of blocks written on current tape */
int tapeno = 0; /* current tape number */
int density = 0; /* density in bytes/0.1" " <- this is for hilit19 */
@@ -322,7 +322,7 @@
snprintf(snapname, sizeof snapname,
"%s/.snap/dump_snapshot", mntpt);
snprintf(snapcmd, sizeof snapcmd,
- "/sbin/mksnap_ffs %s %s", mntpt, snapname);
+ "mksnap_ffs %s %s", mntpt, snapname);
unlink(snapname);
if (system(snapcmd) != 0)
errx(X_STARTUP, "Cannot create %s: %s\n",
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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@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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