md: load/store badblock list from v1.x metadata

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Space must have been allocated when array was created.
A feature flag is set when the badblock list is non-empty, to
ensure old kernels don't load and trust the whole device.

We only update the on-disk badblocklist when it has changed.
If the badblocklist (or other metadata) is stored on a bad block, we
don't cope very well.

If metadata has no room for bad block, flag bad-blocks as disabled,
and do the same for 0.90 metadata.

Signed-off-by: NeilBrown <neilb@suse.de>

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This commit is contained in:

NeilBrown 2011-07-28 11:31:47 +10:00

parent 34b343cff4

commit 2699b67223

3 changed files with 116 additions and 11 deletions

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108

drivers/md/md.c

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5

drivers/md/md.h

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14

include/linux/raid/md_p.h

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