Date: Sun, 8 Oct 2006 13:33:49 -0700 (PDT) From: "R. B. Riddick" <arne_woerner@yahoo.com> To: Bruce Evans <bde@zeta.org.au>, Scott Long <scottl@samsco.org> Cc: freebsd-fs@freebsd.org, Kris Kennaway <kris@obsecurity.org> Subject: Re: 2 bonnies can stop disk activity permanently Message-ID: <20061008203349.84148.qmail@web30312.mail.mud.yahoo.com>
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Bruce wrote:=0A>On Sun, 8 Oct 2006, Scott Long wrote:=0A>> Kris Kennaway wr= ote:=0A>>> You forgot to even mention what version you're running ;-)=0A>>>= =0A>>> Also show your kernel config file. Configure DDB per the chapter o= n=0A>>>=0A>> No need for all of that information, the bug in vfs_bio.c is q= uite obvious. =0A>> =3D-( Fixing it will take some thought, though.=0A>=0A= >Is it really obvious? I think it is only obvious that many things are=0A>= not quite right. The quick fix of increasing BKVASIZE to the size of=0A>th= e largest buffer used should still work to prevent bkva fragmentation.=0A>= =0AOK: The FBSD version was varying: R6.1, R6.1-CURRENT, R7-CURRENT.=0A=0AB= ut we just found out, that it happens when we use "newfs -b 65536", but not= with default "-b" value (whatever that might be)...=0A=0ASo if somebody wa= nts to reproduce it, he/she should use >R6 and "newfs -b 65536"...=0AI thin= k that were all steps to do...=0A=0ACan somebody reproduce it now?=0ADDB is= not my bag, so that I would be glad, if somebody with an appropriate setti= ng could reproduce it...=0A=0A-Arne=0A=0A=0A=0A=0A=0A
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