| Message ID | 1402581678-17654-1-git-send-email-luis.henriques@canonical.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/drivers/target/target_core_alua.c b/drivers/target/target_core_alua.c index f608fbc14a27..df58a67f81e0 100644 --- a/drivers/target/target_core_alua.c +++ b/drivers/target/target_core_alua.c @@ -409,7 +409,16 @@ static inline int core_alua_state_standby( case REPORT_LUNS: case RECEIVE_DIAGNOSTIC: case SEND_DIAGNOSTIC: + case READ_CAPACITY: return 0; + case SERVICE_ACTION_IN: + switch (cdb[1] & 0x1f) { + case SAI_READ_CAPACITY_16: + return 0; + default: + *alua_ascq = ASCQ_04H_ALUA_TG_PT_STANDBY; + return 1; + } case MAINTENANCE_IN: switch (cdb[1] & 0x1f) { case MI_REPORT_TARGET_PGS:
This is a note to let you know that I have just added a patch titled target: Allow READ_CAPACITY opcode in ALUA Standby access state to the linux-3.11.y-queue branch of the 3.11.y.z extended stable tree which can be found at: http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.11.y-queue If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.11.y.z tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Luis ------ From fc177e7c6a633d8edb3124475bf43216c3f8731e Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger <nab@linux-iscsi.org> Date: Thu, 5 Jun 2014 23:37:00 -0700 Subject: target: Allow READ_CAPACITY opcode in ALUA Standby access state commit e7810c2d2c37fa8e58dda74b00790dab60fe6fba upstream. This patch allows READ_CAPACITY + SAI_READ_CAPACITY_16 opcode processing to occur while the associated ALUA group is in Standby access state. This is required to avoid host side LUN probe failures during the initial scan if an ALUA group has already implicitly changed into Standby access state. This addresses a bug reported by Chris + Philip using dm-multipath + ESX hosts configured with ALUA multipath. (Drop v3.15 specific set_ascq usage - nab) Reported-by: Chris Boot <crb@tiger-computing.co.uk> Reported-by: Philip Gaw <pgaw@darktech.org.uk> Cc: Chris Boot <crb@tiger-computing.co.uk> Cc: Philip Gaw <pgaw@darktech.org.uk> Cc: Hannes Reinecke <hare@suse.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> [ luis: backported to 3.11: Used nab's backport to 3.10 ] Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- drivers/target/target_core_alua.c | 9 +++++++++ 1 file changed, 9 insertions(+) -- 1.9.1