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NeilBrown f91de92ed6 [PATCH] md: allow md arrays to be started read-only (module parameter). 
When an md array is started, the superblock will be written, and resync may
commense.  This is not good if you want to be completely read-only as, for
example, when preparing to resume from a suspend-to-disk image.

So introduce a module parameter "start_ro" which can be set
to '1' at boot, at module load, or via
  /sys/module/md_mod/parameters/start_ro

When this is set, new arrays get an 'auto-ro' mode, which disables all
internal io (superblock updates, resync, recovery) and is automatically
switched to 'rw' when the first write request arrives.

The array can be set to true 'ro' mode using 'mdadm -r' before the first
write request, or resync can be started without a write using 'mdadm -w'.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
 		2005-11-09 07:56:38 -08:00
..
raid6test [PATCH] RAID6 Altivec fix 2005-09-17 11:49:58 -07:00
Kconfig Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Makefile [PATCH] md: optimised resync using Bitmap based intent logging 2005-06-21 19:07:43 -07:00
bitmap.c [PATCH] md: support BIO_RW_BARRIER for md/raid1 2005-11-09 07:56:38 -08:00
dm-bio-list.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dm-bio-record.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dm-crypt.c [PATCH] Use sg_set_buf/sg_init_one where applicable 2005-10-30 11:19:43 +11:00
dm-emc.c [PATCH] device-mapper dm-emc: Fix a memset 2005-05-05 16:36:46 -07:00
dm-exception-store.c [PATCH] vfree and kfree cleanup in drivers/ 2005-09-10 10:06:30 -07:00
dm-hw-handler.c [PATCH] device-mapper: Some missing statics 2005-05-05 16:36:46 -07:00
dm-hw-handler.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dm-io.c [PATCH] gfp flags annotations - part 1 2005-10-08 15:00:57 -07:00
dm-io.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dm-ioctl.c [PATCH] device-mapper: Trigger an event when a table is deleted 2005-09-28 07:46:42 -07:00
dm-linear.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dm-log.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dm-log.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dm-mpath.c [PATCH] device-mapper: Fix queue_if_no_path initialisation 2005-09-28 07:46:42 -07:00
dm-mpath.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dm-path-selector.c [PATCH] device-mapper: Some missing statics 2005-05-05 16:36:46 -07:00
dm-path-selector.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dm-raid1.c [PATCH] gfp flags annotations - part 1 2005-10-08 15:00:57 -07:00
dm-round-robin.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dm-snap.c [PATCH] device-mapper snapshots: Handle origin extension 2005-07-12 16:19:11 -07:00
dm-snap.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dm-stripe.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dm-table.c [PATCH] device-mapper: fix deadlocks in core (prep) 2005-07-28 21:46:03 -07:00
dm-target.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dm-zero.c [PATCH] device-mapper: Some missing statics 2005-05-05 16:36:46 -07:00
dm.c [PATCH] kill bio->bi_set 2005-09-07 16:57:20 -07:00
dm.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
faulty.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
kcopyd.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
kcopyd.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
linear.c [BLOCK] Unify the seperate read/write io stat fields into arrays 2005-11-01 09:26:16 +01:00
md.c [PATCH] md: allow md arrays to be started read-only (module parameter). 2005-11-09 07:56:38 -08:00
mktables.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
multipath.c [PATCH] md: convert 'faulty' and 'in_sync' fields to bits in 'flags' field 2005-11-09 07:56:38 -08:00
raid0.c [BLOCK] Unify the seperate read/write io stat fields into arrays 2005-11-01 09:26:16 +01:00
raid1.c [PATCH] md: support BIO_RW_BARRIER for md/raid1 2005-11-09 07:56:38 -08:00
raid5.c [PATCH] md: convert 'faulty' and 'in_sync' fields to bits in 'flags' field 2005-11-09 07:56:38 -08:00
raid6.h [PATCH] RAID6 Altivec fix 2005-09-17 11:49:58 -07:00
raid6algos.c [PATCH] RAID6 Altivec fix 2005-09-17 11:49:58 -07:00
raid6altivec.uc [PATCH] RAID6 Altivec fix 2005-09-17 11:49:58 -07:00
raid6int.uc Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
raid6main.c [PATCH] md: convert 'faulty' and 'in_sync' fields to bits in 'flags' field 2005-11-09 07:56:38 -08:00
raid6mmx.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
raid6recov.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
raid6sse1.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
raid6sse2.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
raid6x86.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
raid10.c [PATCH] md: convert 'faulty' and 'in_sync' fields to bits in 'flags' field 2005-11-09 07:56:38 -08:00
unroll.pl Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
xor.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00