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author | NeilBrown <neilb@suse.de> | 2009-10-16 01:35:30 -0400 |
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committer | NeilBrown <neilb@suse.de> | 2009-10-16 01:35:30 -0400 |
commit | 5e5e3e78ed9038b8f7112835d07084eefb9daa47 (patch) | |
tree | afcefac7c0dbafb71f09d90812eecb2c6e4bc766 /Documentation/pi-futex.txt | |
parent | e4424fee1815f996dccd36be44d68ca160ec3e1b (diff) |
md: Fix handling of raid5 array which is being reshaped to fewer devices.
When a raid5 (or raid6) array is being reshaped to have fewer devices,
conf->raid_disks is the latter and hence smaller number of devices.
However sometimes we want to use a number which is the total number of
currently required devices - the larger of the 'old' and 'new' sizes.
Before we implemented reducing the number of devices, this was always
'new' i.e. ->raid_disks.
Now we need max(raid_disks, previous_raid_disks) in those places.
This particularly affects assembling an array that was shutdown while
in the middle of a reshape to fewer devices.
md.c needs a similar fix when interpreting the md metadata.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'Documentation/pi-futex.txt')
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