iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
05a72772fc
linux/drivers/block/drbd
History
Lars Ellenberg 05a72772fc drbd: drbdsetup detach of an unresponsive local disk should not block IO "forever" 
When detaching, we make sure no application IO is in-flight
by internally suspending IO, then trigger the state change,
wait for the result, and finally internally resume IO again.

Once we triggered the stat change to "Failed",
we expect it to change from Failed to Diskless.
(To avoid races, we actually wait for it to leave "Failed").

On an unresponsive local IO backend, this may not happen, ever.
Don't have a "hung" detach block IO "forever", but resume IO
before waiting for the state change to Diskless.

We may well be able to continue IO to and from a healthy peer.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-11-25 09:22:01 -07:00
..
drbd_actlog.c block: add a bi_error field to struct bio 2015-07-29 08:55:15 -06:00
drbd_bitmap.c Merge branch 'akpm' (patches from Andrew) 2015-11-07 14:32:45 -08:00
drbd_debugfs.c make simple_positive() public 2015-06-23 18:02:01 -04:00
drbd_debugfs.h drbd: debugfs: add basic hierarchy 2014-07-10 18:35:16 +02:00
drbd_int.h drbd: Backport the "events2" command 2015-11-25 09:22:00 -07:00
drbd_interval.c drbd: use RB_DECLARE_CALLBACKS() to define augment callbacks 2014-09-18 09:00:17 -06:00
drbd_interval.h drbd: application writes may set-in-sync in protocol != C 2014-07-10 18:35:02 +02:00
drbd_main.c drbd: Fix locking across all resources 2015-11-25 09:22:00 -07:00
drbd_nl.c drbd: drbdsetup detach of an unresponsive local disk should not block IO "forever" 2015-11-25 09:22:01 -07:00
drbd_nla.c drbd: Remove drbd_wrappers.h 2014-04-30 13:46:54 -06:00
drbd_nla.h drbd: Split off netlink mandatory attribute handling into separate file 2012-11-08 16:57:45 +01:00
drbd_proc.c drbd: Move enum write_ordering_e to drbd.h 2015-11-25 09:22:00 -07:00
drbd_protocol.h drbd: Enable QUEUE_FLAG_DISCARD only if the peer can recieve P_TRIM 2014-04-30 13:46:55 -06:00
drbd_receiver.c drbd: Backport the "events2" command 2015-11-25 09:22:00 -07:00
drbd_req.c drbd: Fix spurious disk-timeout 2015-11-25 09:22:01 -07:00
drbd_req.h drbd: De-inline drbd_should_do_remote() and drbd_should_send_out_of_sync() 2015-11-25 09:22:00 -07:00
drbd_state_change.h drbd: Backport the "events2" command 2015-11-25 09:22:00 -07:00
drbd_state.c drbd: Backport the "events2" command 2015-11-25 09:22:00 -07:00
drbd_state.h drbd: Fix locking across all resources 2015-11-25 09:22:00 -07:00
drbd_strings.c drbd: Move string function prototypes from linux/drbd.h to drbd_string.h 2014-02-17 16:50:37 +01:00
drbd_strings.h drbd: Move string function prototypes from linux/drbd.h to drbd_string.h 2014-02-17 16:50:37 +01:00
drbd_vli.h Fix common misspellings 2011-03-31 11:26:23 -03:00
drbd_worker.c drbd: Fix locking across all resources 2015-11-25 09:22:00 -07:00
Kconfig drbd: update Kconfig to match current dependencies 2012-12-06 13:08:29 +01:00
Makefile drbd: debugfs: add basic hierarchy 2014-07-10 18:35:16 +02:00