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Assemble: ensure stripe_cache is big enough to handle new chunk size 

If you reshape to a larger chunk size, and need to restart,
it can have problems.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2015-06-18 15:49:52 +10:00
parent 2a6493cfe1
commit 56fcbcbb6f
1 changed files with 5 additions and 1 deletions
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6
Assemble.c
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@ -1109,7 +1109,11 @@ static int start_array(int mdfd,
/* might need to increase the size
* of the stripe cache - default is 256
*/
if (256 < 4 * (content->array.chunk_size/4096)) {
int chunk_size = content->array.chunk_size;
if (content->reshape_active &&
content->new_chunk > chunk_size)
chunk_size = content->new_chunk;
if (256 < 4 * ((content->array.chunk_size+4065)/4096)) {
struct mdinfo *sra = sysfs_read(mdfd, NULL, 0);
if (sra)
sysfs_set_num(sra, NULL,