The commit is pushed to "branch-rh7-3.10.0-862.20.2.vz7.73.x-ovz" and will
appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-862.20.2.vz7.73.6
------>
commit fb69449a531d4326d8208c10822751fe4b12594e
Author: Anton Nefedov <[email protected]>
Date: Fri Nov 16 12:46:29 2018 +0300
ploop: move to standby after -ENOTCONN too
For example vstorage-mount death results in -ENOTCONN error.
https://pmc.acronis.com/browse/VSTOR-17613
Signed-off-by: Anton Nefedov <[email protected]>
Acked-by: Andrey Zaitsev <[email protected]>
Acked-by: Sergey Lysanov <[email protected]>
===========================
Patchset description:
ploop: more cases for standby mode
standby mode motivation:
commit bdadef81aba572fdcfd59e4c5c7b18736c962ebd
Author: Andrei Vagin <[email protected]>
Date: Thu Mar 1 11:07:34 2018 +0300
ploop: add a standby mode
This mode shows that a delta lease was stolen and it is impossible to
handle any requests.
We want to know about this situation from the iscsi target. When HA
decides that the current target is broken, it can initialize another
target with the same delta. In this case, the first target has to
complete
all in-porgress commands and set the ASCQ_04H_ALUA_TG_PT_STANDBY bit in
their status.
In Linux, bio-s are always completed with EIO in error cases, so we need
another way how to determine this state. This patch addes a new block
queue flag QUEUE_FLAG_STANDBY.
Anton Nefedov (3):
ploop: move standby mode setting to separate function
ploop: move to standby mode after fsync() error too
ploop: move to standby after -ENOTCONN too
---
drivers/block/ploop/io_kaio.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/block/ploop/io_kaio.c b/drivers/block/ploop/io_kaio.c
index 52d3e542fe19..6089522f8f5a 100644
--- a/drivers/block/ploop/io_kaio.c
+++ b/drivers/block/ploop/io_kaio.c
@@ -113,8 +113,8 @@ static void check_standby_mode(long res, struct
ploop_device *plo) {
struct request_queue *q = plo->queue;
int prev;
- /* move to standby if delta lease was stolen */
- if (res != -EBUSY) {
+ /* move to standby if delta lease was stolen or mount is gone */
+ if (res != -EBUSY && res != -ENOTCONN) {
return;
}
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