On 03/15/2013 06:02 AM, zarnovi...@gmail.com wrote: > I assume that I'm not hitting any of those timeouts, otherwise I should > see something in debug output. Do any of those values affect the kernel > part of iSCSI client ?
If you were hitting a iscsi issue then you should see something in /var/log/messages from the sdX device and/or the iscsi layer before the FS error messages. You would see something about a DID_TRANSPORT_DISRUPTED or DID_ERROR or DID_TRANSPORT_FAILFAST. You might also see something about the iscsi replacement/recovery timeout expiring. The iscsiadm session state would also show not logged in. > > Do the counts (iorequest_cnt, iodone_cnt, ioerr_cnt) mean that every > request sent out was successfully completed ? ( iorequest_cnt > == iodone_cnt ) If they are equal then it means everything has been going smoothly and the scsi eh has not had to run. If a command timesout and the scsi eh runs then those values would be different. The iodone_cnt is not incremented in that case. > I would like to know if the response to write is an actual error > response sent by the target or is it a (network) problem related to client. > ioerr_cnt = 0 indicates the iscsi layer has not failed any commands due to something like connection error or due to the target/device sending back a failure. The thing is that it could be non-zero and we could have got check conditions from the device that were just telling us that the device is ready or something informative like that. > Thanks in advance for any tips. I'm desperate enough to start > tcpdump-ing the whole thing.. ;) > > Regards, > > Brano Zarnovican > > Host/Guest OS: Scientific Linux release 6.3 > Host kernel: 2.6.32-358.0.1.el6.x86_64 > Guest kernel: 2.6.32-279.9.1.el6.x86_64 > iSCSI client: iscsi-initiator-utils-126.96.36.1992-41.el6.x86_64 > > -- > 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 firstname.lastname@example.org. > Visit this group at http://groups.google.com/group/open-iscsi?hl=en. > For more options, visit https://groups.google.com/groups/opt_out. > > -- 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 http://groups.google.com/group/open-iscsi?hl=en. For more options, visit https://groups.google.com/groups/opt_out.