Re: FS hang when creating snapshots on a UFS SU+J setup

2012-01-20 Thread Dale Scott
First step in debugging is to find out if the problem is SU+J specific. To find out, turn off SU+J but leave SU. This change is done by running: umount filesystem tunefs -j disable filesystem mount filesystem cd filesystem

Re: FS hang when creating snapshots on a UFS SU+J setup

2012-01-12 Thread Gautam Mani
On Wed, Jan 11, 2012 at 11:12:35PM +0530, Gautam Mani wrote: Do let me know if I can try something further. I reproduced this again and here is the core.txt crash summary if it helps. http://pastebin.com/hTGMXX6A Thanks Gautam ___

Re: FS hang when creating snapshots on a UFS SU+J setup

2012-01-11 Thread Yamagi Burmeister
...@yamagi.org To: j...@freebsd.org, mckus...@freebsd.org Cc: freebsd-current@freebsd.org, br...@bryce.net Subject: Re: FS hang when creating snapshots on a UFS SU+J setup Hello, I'm sorry to bother you, but you may not be aware of this thread and this problem. We are several people

Re: FS hang when creating snapshots on a UFS SU+J setup

2012-01-11 Thread Gautam Mani
On Wed, Jan 11, 2012 at 10:30:39AM +0100, Yamagi Burmeister wrote: Hello, I've done some tests to verify that the problem only occures when SU+J is used, but not SU without J. In fact, I did run the following two loops on different TTYs in parallel: I also confirm this using a similar

Re: FS hang when creating snapshots on a UFS SU+J setup

2012-01-10 Thread Kirk McKusick
Date: Mon, 9 Jan 2012 18:30:51 +0100 From: Yamagi Burmeister li...@yamagi.org To: j...@freebsd.org, mckus...@freebsd.org Cc: freebsd-current@freebsd.org, br...@bryce.net Subject: Re: FS hang when creating snapshots on a UFS SU+J setup Hello, I'm sorry to bother you, but you may

Re: FS hang when creating snapshots on a UFS SU+J setup

2012-01-10 Thread alain
snapshots on a UFS SU+J setup Hello, I'm sorry to bother you, but you may not be aware of this thread and this problem. We are several people experiencing deadlocks, kernel panics and other problems when creating sanpshots on file systems with SU+J. It would be nice to get some feedback

Re: FS hang when creating snapshots on a UFS SU+J setup

2012-01-09 Thread Yamagi Burmeister
Hello, I'm sorry to bother you, but you may not be aware of this thread and this problem. We are several people experiencing deadlocks, kernel panics and other problems when creating sanpshots on file systems with SU+J. It would be nice to get some feedback, e.g. how can we help debugging and /

Re: FS hang when creating snapshots on a UFS SU+J setup

2012-01-08 Thread Gautam Mani
On Tue, Jan 03, 2012 at 12:55:36PM +, Alain BRAUNER wrote: May be i overlooked something but i can confirm the two precedents reports and PR kern/163310, i have the same freeze when trying to issue snapshot on the root fs when SUJ is ON. I confirm seeing this problem on my box. $

Re: FS hang when creating snapshots on a UFS SU+J setup

2012-01-03 Thread Yamagi Burmeister
Hi, I've seen this too (and other problems with SU+J and snapshots) and was able to reproduce it fairly easy. I wrote a PR: http://www.freebsd.org/cgi/query-pr.cgi?pr=163310 Never received any feedback until now... On Mon, 2 Jan 2012 23:27:57 -0600 Bryce Edwards br...@bryce.net wrote: I

Re: FS hang when creating snapshots on a UFS SU+J setup

2012-01-03 Thread Alain BRAUNER
Bryce Edwards bryce at bryce.net writes: I have a RELENG_9 machine that hangs when a snapshot is created on the root fs (UFS, with SU+J).  More accurately, all the processes show a state of suspfs (with ^T) and no fs activity is completed from then on.  A hard reboot (power cycle) was the

FS hang when creating snapshots on a UFS SU+J setup

2012-01-02 Thread Bryce Edwards
I have a RELENG_9 machine that hangs when a snapshot is created on the root fs (UFS, with SU+J).  More accurately, all the processes show a state of suspfs (with ^T) and no fs activity is completed from then on.  A hard reboot (power cycle) was the only way to proceed. Here's some reference info