https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=209700
Bug ID: 209700
Summary: [iscsi] ctld advertises support for tagged queuing but
does not appear to support it
Product: Base System
Version: 10.2-RELEASE
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: bin
Assignee: [email protected]
Reporter: [email protected]
Using NetBSD-7 iscsi initiator to FreeBSD-10.2-RELEASE ctld target fails with
check condition, overlapped commands attempted, even though ctld claims that it
supports tagged queueing.
packet captures available at
http://poofygoof.com/~agrier/attic/freebsd_iscsi.cap.bz2 .
for comparison, the same client connecting to a smartOS (illumOS/opensolaris)
iSCSI target is at http://poofygoof.com/~agrier/attic/smartos_iscsi.cap.bz2 ,
which works correctly.
current workaround is to add a quirk to the NetBSD initiator for the FreeBSD
target to disable tagged queuing support. it is expected that this hurts
throughput, since by definition it disables opportunities for pipelining.
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