Date: Tue, 12 Oct 2010 16:28:26 +0300 From: Andriy Gapon <avg@icyb.net.ua> To: Jeremy Chadwick <freebsd@jdc.parodius.com> Cc: freebsd-fs@freebsd.org Subject: Re: Locked up processes after upgrade to ZFS v15 Message-ID: <4CB4627A.1010807@icyb.net.ua> In-Reply-To: <20101012130245.GA32584@icarus.home.lan> References: <39F05641-4E46-4BE0-81CA-4DEB175A5FBE@free.de> <20101009111241.GA58948@icarus.home.lan> <CF901B53-657E-49FC-A43B-27BC7D49F7A7@free.de> <4CB17983.3020907@icyb.net.ua> <20101011151508.GA10917@icarus.home.lan> <4CB32C75.2060000@icyb.net.ua> <20101011183707.GA13925@icarus.home.lan> <4CB3870F.7070107@icyb.net.ua> <20101012100709.GA29861@icarus.home.lan> <4CB4429C.9040109@icyb.net.ua> <20101012130245.GA32584@icarus.home.lan>
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on 12/10/2010 16:02 Jeremy Chadwick said the following: > On Tue, Oct 12, 2010 at 02:12:28PM +0300, Andriy Gapon wrote: >> I don't have an easy way to reproduce it. >> The theory is that you should sendfile a file with size which is not multiple of >> page size (4K) and then you should mmap and read the same file; the last step >> should lock up. >> Perhaps, tools/regression/sockets/sendfile/sendfile.c with the following patch >> would reproduce it? >> http://people.freebsd.org/~avg/sendfile.diff > > This patch only works on HEAD. I downloaded the HEAD version of > sendfile.c from here: > > http://www.freebsd.org/cgi/cvsweb.cgi/src/tools/regression/sockets/sendfile/sendfile.c?rev=1.7;content-type=text%2Fplain > > And the HEAD Makefile as well (since libmd linking is needed): > > http://www.freebsd.org/cgi/cvsweb.cgi/src/tools/regression/sockets/sendfile/Makefile?rev=1.6;content-type=text%2Fplain > > And then applied your patch. However, the result doesn't induce a > lock-up. Bummer. Oh, I am stupid - it should be a different process doing mmap, not the same one. -- Andriy Gapon
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