Date: Sat, 25 Jan 2014 10:15:12 -0700 From: "Justin T. Gibbs" <gibbs@scsiguy.com> To: Ben Laurie <ben@links.org> Cc: freebsd-scsi@freebsd.org Subject: Re: Dropped interrupts Message-ID: <8680A21D-78D7-4B65-A502-17F0C3B70291@scsiguy.com> In-Reply-To: <CAG5KPzzVpvH=miguqKnO0pA2jmWm-_7s7W-Nbh%2BVeHKv7x7ikw@mail.gmail.com> References: <CAG5KPzxUAnORPSyJDrSdBBNE7MBi-dD=M6=E1rMG%2Bc8rn4deUQ@mail.gmail.com> <AE41EB93-26BD-4BD0-9913-7CD0A5B6E1A4@scsiguy.com> <CAG5KPzwR5=WNKc5hck8F7CtCtk3mivwYFRFeCJT_zWdnetW=3w@mail.gmail.com> <84D23688-DDC6-421E-9D21-3DA646229038@scsiguy.com> <CAG5KPzxqxmzfnAiUyVyApMs5XqKpH0F0sbTxy1h=4cL=rEROpQ@mail.gmail.com> <CAG5KPzyPXLEOAFKTAW%2BJaai=XbT3mi5yGHs1LnUbMcD-LfQ1YQ@mail.gmail.com> <CAG5KPzzVpvH=miguqKnO0pA2jmWm-_7s7W-Nbh%2BVeHKv7x7ikw@mail.gmail.com>
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On Jan 24, 2014, at 10:44 PM, Ben Laurie <ben@links.org> wrote: > Aha, finally got the error again=85 I don=92t know enough about your backup or Bacula to know if this is = amount that should be written, but we attempted a write in variable = block mode of 64512 bytes. The command, data transfer list, and = controller state are all consistent with this. The command was = successfully transferred to the tape drive, but it never transitioned to = data phase to allow us to begin the data transfer. (In parallel SCSI, = the target controls all state transitions). Since there are no parity errors or other indications of a transport = error, my hunch is that this is a tape drive issue. Are you running the = latest available firmware for it? How many write cycles do you have on = your media? When was the last time you cleaned the drive? There are still some bugs in the formatting of the diagnostic output for = this driver. I=92ll fix these up and get them into HEAD. =97 Justin=
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