>>> Lee Duncan <leeman.dun...@gmail.com> schrieb am 14.12.2016 um 20:18 in Nachricht <8286a277-f7fe-4c7d-a944-40034a0b5...@gmail.com>: > On Dec 12, 2016, at 5:46 AM, Dave partridge <minus273ch...@gmail.com> wrote: >> >> I just ran a Wireshark capture on the target system of the iSCSI session for > a Windows initiator connecting the tape and then issuing an FSF. I then did
> the same for the Ubuntu open-iscsi initiator. >> >> The capture for the WIndows initiator looks pretty much as I would expect > (given my limited knowledge of the iSCSI protocols). >> >> The Ubuntu/open-iscsi capture has all sorts of odd stuff like logins being > sent to the target every 15 seconds whle the FSF is being processed. > Definitely borked I think. >> >> Do any of the open-iscsi folk watch this forum or am I talking to myself? >> >> Dave > > Hi Dave: > > I think you are right — the problem is the timeout. > > The default timeout on many systems (like SUSE that I work on) is set to 60 > seconds for a SCSI command. And it looks like the tape drive took about 82 > seconds to skip forward a file on your Windows trace. AFAIK, 60s is the SCSI _disk_ timeout; for tapes the timeout should be significantly longer (depending on the technology). > > Try setting the timeout to 90 seconds? The open-iscsi README talks about how > to manually set the system SCSI timeout to longer (since this isn’t an iSCSI > thing). 15 minutes or so? > > Also, you may want to disable the Ping/NOOPs that open-iscsi is setting. > This is also discussed in the README file. I’d try setting them both to 0 to > get them out of the way. It looks like the tape drive does not respond to the > NOOP ping when it is busy for 80+ seconds skipping forward one file. Regards, Ulrich > > — > Lee Duncan > > -- > You received this message because you are subscribed to the Google Groups > "open-iscsi" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to open-iscsi+unsubscr...@googlegroups.com. > To post to this group, send email to open-iscsi@googlegroups.com. > Visit this group at https://groups.google.com/group/open-iscsi. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "open-iscsi" group. To unsubscribe from this group and stop receiving emails from it, send an email to open-iscsi+unsubscr...@googlegroups.com. To post to this group, send email to open-iscsi@googlegroups.com. Visit this group at https://groups.google.com/group/open-iscsi. For more options, visit https://groups.google.com/d/optout.
