Skip to main content

Browse the archive

https://github.com/torvalds/linux
23 October 2021, 00:29:24 UTC
Revision 84692195969b83f0ba57dc33ecf73e6c124dd186 authored by NeilBrown on 27 August 2006, 08:23:49 UTC, committed by Linus Torvalds on 27 August 2006, 18:01:31 UTC 
[PATCH] md: avoid backward event updates in md superblock when degraded.
 
If we
  - shut down a clean array,
  - restart with one (or more) drive(s) missing
  - make some changes
  - pause, so that they array gets marked 'clean',
the event count on the superblock of included drives
will be the same as that of the removed drives.
So adding the removed drive back in will cause it
to be included with no resync.

To avoid this, we only update the eventcount backwards when the array
is not degraded.  In this case there can (should) be no non-connected
drives that we can get confused with, and this is the particular case
where updating-backwards is valuable.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1 parent 45f17e0
History
Tip revision: 84692195969b83f0ba57dc33ecf73e6c124dd186 authored by NeilBrown on 27 August 2006, 08:23:49 UTC
[PATCH] md: avoid backward event updates in md superblock when degraded.
Tip revision: 8469219
File Mode Size
Documentation
arch
block
crypto
drivers
fs
include
init
ipc
kernel
lib
mm
net
scripts
security
sound
usr
.gitignore -rw-r--r-- 521 bytes
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 87.4 KB
Kbuild -rw-r--r-- 1.2 KB
MAINTAINERS -rw-r--r-- 71.0 KB
Makefile -rw-r--r-- 46.5 KB
README -rw-r--r-- 16.2 KB
REPORTING-BUGS -rw-r--r-- 3.0 KB

README

back to top