Hi David: I have created Issue#35 for this on github.
On Thursday, December 15, 2016 at 2:00:15 PM UTC-8, David C. Partridge wrote: > > You’re right, it is in section 8.2. Maybe it needs to be said in 8.1.1 as > well? > > > > Dave > > > > *From:* email@example.com [mailto:firstname.lastname@example.org] *On > Behalf Of *Lee Duncan > *Sent:* 15 December 2016 19:41 > *To:* email@example.com > *Subject:* Re: Problem with iSCSI connected LTO-2 tape drive > > > > On Dec 15, 2016, at 7:14 AM, david.partri...@perdrix.co.uk wrote: > > > > Lee, > > It would appear that the guilty party was: > > node.conn.timeo.noop_out_interval = 5 > node.conn.timeo.noop_out_timeout = 5 > > I changed both of these to 0 for the tape device and the problem went away. > > > > Excellent. > > > > > Please note that the README.gz for open-scsi doesn't actually say that > this is what you need to do to disable the NOP-out polling, so could I > suggest that this be stated explicitly. > > > > My README says, in section 8.2: > > > > For this setup, you can turn off iSCSI pings by setting: > > > > node.conn.timeo.noop_out_interval = 0 > > node.conn.timeo.noop_out_timeout = 0 > > > > > > I must admit that I find it hard to imagine that an iSCSI target would > reply to a NOP-out while it was processing a command such as a tape fsf or > even tape erase (whose timeout is 6 * the long-timeout of 4 hours). Should > perhaps the NOP-out polling be suspended while a command is being > processed? Or alternatively maybe the NOP-out polling be completely > disabled by default with something in the README.gz file that explains WHEN > you might want it and how to enable it. It's certainly clear that (at > least) the MS iSCSI initiator doesn't send NOP-out polls. > > > > open-iscsi is normally used to deal with discs. When it’s used with tape > it’s not unusual to find bugs or design errors that we did not know were > present. > > > > Perhaps a small blurb in the README about dealing with tape, suggesting > turning NOOP/ping off. Please feel free to post a pull request on github or > suggest a patch on this list. > > > > > > > Regards > Dave > > > > > > -- > > Lee Duncan > > > > "Choice means saying no to one thing so you can say yes to another." -- > Dan Millman > > > > -- > You received this message because you are subscribed to a topic in the > Google Groups "open-iscsi" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/open-iscsi/ViC-za8eHdc/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > open-iscsi+unsubscr...@googlegroups.com. > To post to this group, send email to firstname.lastname@example.org. > 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 email@example.com. Visit this group at https://groups.google.com/group/open-iscsi. For more options, visit https://groups.google.com/d/optout.