When reshape is started imsm stores new size in metadata.
mdadm requires "old" size to proper initialization restarted array.
When reshape is in progress getinfo_super_imsm_volume() should report
computed array size value instead array size stored in metatda.
Signed-off-by: Adam Kwolek <adam.kwolek@xxxxxxxxx>
---
super-intel.c | 13 +++++++++++++
1 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/super-intel.c b/super-intel.c
index 1b3407a..c101dca 100644
--- a/super-intel.c
+++ b/super-intel.c
@@ -1806,6 +1806,19 @@ static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info,
dprintf("IMSM: General Migration checkpoint : %llu "
"(%llu) -> read reshape progress : %llu\n",
units, blocks_per_unit, info->reshape_progress);
+ unsigned long long array_blocks;
+ int used_disks;
+
+ used_disks = imsm_num_data_members(dev, 1);
+ if (used_disks > 0) {
+ array_blocks = map->blocks_per_member *
+ used_disks;
+ /* round array size down to closest MB
+ */
+ info->custom_array_size = (array_blocks
+ >> SECT_PER_MB_SHIFT)
+ << SECT_PER_MB_SHIFT;
+ }
}
case MIGR_VERIFY:
/* we could emulate the checkpointing of
--
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