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Re: kern/55063: kernel iscsi is flaky

The following reply was made to PR kern/55063; it has been noted by GNATS.

From: (Michael van Elst)
Subject: Re: kern/55063: kernel iscsi is flaky
Date: Wed, 11 Mar 2020 13:42:58 -0000 (UTC) writes:
 >Using the kernel scsi initiator against iscsi-target with 4kB block size I frequently run into some sort of resource limit:
 >sd0: QUEUE FULL resulted in 0 openings
 That's the result of:  !sernum_in_window(sess), i.e the transmission
 window is closed and the target blocks the initiator.
 >At first the messages are occasional but then it starts spamming and 
 >the kernel hard hangs after a few minutes. Cannot enter ddb at this point.
 Sounds as if the system runs out of memory.
                                 Michael van Elst
                                 "A potential Snark may lurk in every tree."

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