From 7e7e9a4d72323fe0298c9f5741245b0f11165a31 Mon Sep 17 00:00:00 2001 From: Adam Kwolek Date: Fri, 13 Apr 2012 16:52:02 +0200 Subject: FIX: Respect metadata size limitations When reshape_super() updates metadata with new size, due to some metadata limitations saved value can be different than requested value by user. Update size (read it from metadata) for setting it in md. Signed-off-by: Adam Kwolek Signed-off-by: NeilBrown --- Grow.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/Grow.c b/Grow.c index e8f6554..86d1020 100644 --- a/Grow.c +++ b/Grow.c @@ -1637,6 +1637,27 @@ int Grow_reshape(char *devname, int fd, int quiet, char *backup_file, goto release; } sync_metadata(st); + if (st->ss->external) { + /* metadata can have size limitation + * update size value according to metadata information + */ + struct mdinfo *sizeinfo = + st->ss->container_content(st, subarray); + if (sizeinfo) { + unsigned long long new_size = + sizeinfo->custom_array_size/2; + int data_disks = get_data_disks( + sizeinfo->array.level, + sizeinfo->array.layout, + sizeinfo->array.raid_disks); + new_size /= data_disks; + dprintf("Metadata size correction from %llu to " + "%llu (%llu)\n", orig_size, new_size, + new_size * data_disks); + size = new_size; + sysfs_free(sizeinfo); + } + } /* Update the size of each member device in case * they have been resized. This will never reduce -- cgit v1.2.1