From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
These two patches address breakage related to reservation handling recently
reported by Martin Svec using v3.2 and newer iscsi-target code from lio-core
and mainline trees.
The first patch is related to compatible reservation handling (CRH=1) in target
core, that was allowing a new legacy reservation to be created by RESERVE when
an active SPC-3 persistent reservation already exists for the same initiator
port. It also was not returning reservation conflict correctly for these
special CRH=1 cases.
The second patch is specific to iscsi-target reservation conflict response
handling, where iscsi-target was causing reservation conflicts to be ignored
due to a bogus errno specific check in iscsi-target code. This was causing
non reserved initiator ports write access to LUNs, and causing data corruption
with multiple writers + iscsi-target + legacy reservations.
Because patch #2 involves data corruption with multiple clients + reservation
access, please strongly consider upgrading all >= v3.2 based iscsi-target
installations to include this patca.
I'll be adding this to a target-pending.git/3.3-urgent branch ASAP with a
CC to 3.2 stable.
--nab
Nicholas Bellinger (2):
target: Fix compatible reservation handling (CRH=1) with legacy
RESERVE/RELEASE
iscsi-target: Fix reservation conflict -EBUSY response handling bug
drivers/target/iscsi/iscsi_target.c | 2 +-
drivers/target/target_core_pr.c | 34 ++++++++++++++++++++-----------
drivers/target/target_core_transport.c | 1 +
3 files changed, 24 insertions(+), 13 deletions(-)
--
1.7.2.5
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