From: Lars Ellenberg <lars.ellenberg@linbit.com>
Date: Mon, 7 May 2012 09:53:08 +0000 (+0200)
Subject: drbd: fix resend/resubmit of frozen IO
X-Git-Tag: v3.8-rc1~78^2~18^2~84
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=07be15b12c41dbc5ceae130be2e0b655f7611691;p=pandora-kernel.git

drbd: fix resend/resubmit of frozen IO

DRBD can freeze IO, due to fencing policy (fencing resource-and-stonith),
or because we lost access to data (on-no-data-accessible suspend-io).

Resuming from there (re-connect, or re-attach, or explicit admin
intervention) should "just work".

Unfortunately, if the re-attach/re-connect did not happen within
the timeout, since the commit

  drbd: Implemented real timeout checking for request processing time

if so configured, the request_timer_fn() would timeout and
detach/disconnect virtually immediately.

This change tracks the most recent attach and connect, and does not
timeout within <configured timeout interval> after attach/connect.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
---

Reading git-diff-tree failed