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Date: Fri, 18 Jan 2008 12:01:40 +0100
From: Jakub Siroky <jakob@dev.citybikes.cz>
To: freebsd-stable@freebsd.org
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Subject: panic when copying to ext2fs
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I have two large ext2fs partitions (368 and 313GB) to hold data shared between several OSes. While there were no problems on 6-STABLE branch I was quite disappointed after upgrade to 7-STABLE. Whenever I copy/write to ext2fs partition the system freezes totally without crashdump. So I set debugging settings to kernel config (DEBUG,WITNESS,..) and in console I reproduced error situation ending with full screen of unstoppable running text with lot of memory addresses and a few recognisable words: 'new block bit set for ext already' - again with no crashdump. Then I have formatted 1GB partition with ext2fs and the problem on this small partition appears only sometimes. 

Thank you for reply
Jakub Siroky