Date: Fri, 4 Jun 2004 17:06:03 +0200 From: Frode Nordahl <frode@nordahl.net> To: Kirk McKusick <mckusick@beastie.mckusick.com> Cc: freebsd-current@freebsd.org Subject: UFS snapshot deadlocks Message-ID: <B25DE1CD-B638-11D8-B9FB-000A95A9A574@nordahl.net>
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Hello, There has been some talk about reproducible UFS snapshot deadlocks for some time now on the lists, and I have not seen any recent talk about it. Anyone know if there has been any progress on this issue? The following is a 100% reproducible procedure to make it happen: Running 5.2-CURRENT #0: Fri Jun 4 15:07:54 CEST 2004 tty1: while (1) ls -la /usr/.snap end tty2: dump -0af /some/where -C 32 -L /dev/ad0s1f Looking at top(1) show mksnap_ffs being in state UFS. I also experienced this on one of my NFS servers, when I accidently toyed around with ls while I started the dump. It was then hung in state getblk. Cheers, Frode
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