Date: Mon, 30 Jan 2012 18:12:20 +0700 From: Adam Strohl <adams-freebsd@ateamsystems.com> To: FreeBSD-Stable ML <freebsd-stable@freebsd.org> Subject: FreeBSD 9 crash/deadlock when dump(8)ing file system with journaling enabled. Message-ID: <4F267B14.4060200@ateamsystems.com>
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A few days ago I discovered that running dump(8) on a file system which has journaled soft updates enabled causes the machine to become unresponsive. This is using FreeBSD 9.0-R. I can still interact with the system a little bit (typing echos back) but never get a response to any action. It seems like there is an I/O issue (deadlock or overload) and CPU usage spikes as well. Resetting the machine seems to be the only solution once this occurs (CTRL-C, CTRL-ALT-DEL, logging in again, etc all fail). Disclaimer: I have only tested this as a VM under ESXi 5.0 as I don't have access to any physical servers with 9.0 on them that I can test with (I will soon though). As a side note this is the same issue reported here: http://forums.freebsd.org/showthread.php?t=25787 For now I've turned off journaling (soft updates seem fine) and that works around the issue. Let me know if I can provide more details etc! -- Adam Strohl A-Team Systems
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