From 6a75c8ca79b4cf89a5d1ac24b484b75e8a7e9fb4 Mon Sep 17 00:00:00 2001 From: Adam Kwolek Date: Thu, 9 Feb 2012 12:36:42 +1100 Subject: [PATCH 09/12] imsm: FIX: use md position to reshape restart When reshape is broken it can occur that metadata is not saved properly. This can cause that reshape process is farther in md than metadata states. On restart save checkpoint to store current position /probably farther/ that can be read from md. Signed-off-by: Adam Kwolek Signed-off-by: NeilBrown --- super-intel.c | 12 ++++++++++++ 1 files changed, 12 insertions(+), 0 deletions(-) diff --git a/super-intel.c b/super-intel.c index f5762d8..5f451f3 100644 --- a/super-intel.c +++ b/super-intel.c @@ -10067,6 +10067,18 @@ static int imsm_manage_reshape( "are present in copy area.\n"); goto abort; } + /* Save checkpoint to update migration record for current + * reshape position (in md). It can be farther than current + * reshape position in metadata. + */ + if (save_checkpoint_imsm(st, sra, UNIT_SRC_NORMAL) == 1) { + /* ignore error == 2, this can mean end of reshape here + */ + dprintf("imsm: Cannot write checkpoint to " + "migration record (UNIT_SRC_NORMAL, " + "initial save)\n"); + goto abort; + } } /* size for data */ -- 1.7.4.4