Date: Sun, 8 Oct 2006 08:22:13 -0700 (PDT) From: "R. B. Riddick" <arne_woerner@yahoo.com> To: freebsd-fs@freebsd.org Subject: 2 bonnies can stop disk activity permanently Message-ID: <20061008152213.59247.qmail@web30307.mail.mud.yahoo.com>
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Hi!=0A=0AWe (me and Veronica) mentioned, that starting 2 bonnie (ports/benc= h) processes on a UFS=0A1. on a geom_bsd, geom_disk (like ad4 or da0) and g= eom_stripe (using ad4a, ..., ad10a)=0A2. with different controllers areca a= nd nVidia and different motherboards and=0A3. with up to 8 SATA disks=0Ares= ults in a permanently disk-dead system.=0A=0A=0AVeronica's box had more tha= n 700MB of free memory (according to top), when it happened.=0A=0AHeavy loa= d (caused by blogbench, rawio, raidtest and dd) causes no problem, while bo= nnie gets stuck somewhere between putc phase and end of rewrite phase.=0A= =0AThe bonnie processes were blocked due to "nbufkv" (some VFS reason).=0AG= eom activity is impossible then (no file system activity happens).=0ANo sys= log message can be seen on the console.=0A=0ABye=0A-A&V=0A=0A=0A=0A
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