linux/drivers/block/drbd
Lars Ellenberg a5655dac75 drbd: fix bogus resync stats in /proc/drbd
We intentionally do not serialize /proc/drbd access with
internal state changes or statistic updates.

Because of that, cat /proc/drbd  may race with resync just being
finished, still see the sync state, and find information about
number of blocks still to go, but then find the total number
of blocks within this resync has just been reset to 0
when accessing it.

This now produces bogus numbers in the resync speed estimates.

Fix by accessing all relevant data only once,
and fixing it up if "still to go" happens to be more than "total".

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2014-07-10 18:34:59 +02:00
..
drbd_actlog.c drbd: get rid of drbd_queue_work_front 2014-07-10 18:34:56 +02:00
drbd_bitmap.c drbd: get rid of atomic update on disk bitmap works 2014-07-10 18:34:49 +02:00
drbd_int.h drbd: fix bogus resync stats in /proc/drbd 2014-07-10 18:34:59 +02:00
drbd_interval.c Merge branch 'drbd-8.4_ed6' into for-3.8-drivers-drbd-8.4_ed6 2012-11-09 14:20:23 +01:00
drbd_interval.h drbd: Iterate over all overlapping intervals in a tree 2011-10-14 16:47:37 +02:00
drbd_main.c drbd: Remove unnecessary/unused code 2014-07-10 18:34:58 +02:00
drbd_nl.c drbd: silence -Wmissing-prototypes warnings 2014-07-10 18:34:57 +02:00
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: fix bogus resync stats in /proc/drbd 2014-07-10 18:34:59 +02:00
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: silence -Wmissing-prototypes warnings 2014-07-10 18:34:57 +02:00
drbd_req.c drbd: get rid of drbd_queue_work_front 2014-07-10 18:34:56 +02:00
drbd_req.h drbd: silence -Wmissing-prototypes warnings 2014-07-10 18:34:57 +02:00
drbd_state.c drbd: silence -Wmissing-prototypes warnings 2014-07-10 18:34:57 +02:00
drbd_state.h drbd: Rename drbd_tconn -> drbd_connection 2014-02-17 16:44:47 +01:00
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: get rid of drbd_queue_work_front 2014-07-10 18:34:56 +02:00
Kconfig drbd: update Kconfig to match current dependencies 2012-12-06 13:08:29 +01:00
Makefile drbd: Split off netlink mandatory attribute handling into separate file 2012-11-08 16:57:45 +01:00