Date: Wed, 27 Aug 2003 11:29:55 -0700 (PDT) From: Nate Lawson <nate@root.org> To: Dan Langille <dan@langille.org> Cc: Kern Sibbald <kern@sibbald.com> Subject: Re: (Fwd) Re: SCSI tape data loss Message-ID: <20030827112748.Y31947@root.org> In-Reply-To: <3F4CBD13.545.1FF6190E@localhost> References: <1061995529.1258.273.camel@rufus> <3F4CBD13.545.1FF6190E@localhost>
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On Wed, 27 Aug 2003, Dan Langille wrote: > On 27 Aug 2003 at 11:06, Nate Lawson wrote: > > Here is a response I got by forwarding this to the pthreads maintainer: > > > A return status of 0 from write is not interpreted as an End-Of-Tape. > > > The threads library isn't smart enough to know that the file > > > is a tape device and that a 0 status should break it out of the > > > loop. Thus, it continues writing. > > > > > > Use libkse :-) > > > > > > -- > > > Dan Eischen > > Nate: thanks for getting in touch with him. > > It is interesting to note that the code works OK on Linux and > Solaris. Why is FreeBSD different in this case? I don't know. Our pthreads implementation is purely userland so it's likely that it is difficult to differentiate a non-blocking read from an EOF. > Kern: I can't comment on libkse. I don't know it and I don't know > what effect it would have on Bacula. libkse is a drop-in replacement for libpthreads. Unfortunately, it's only on 5.x. -Nate
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