On Thu, 02 Jun 2011 16:48:08 +0200 Krzysztof Wojcik <krzysztof.wojcik@xxxxxxxxx> wrote: > IMSM for securing reshape process uses special disk area outside metadata > for reshaped area backup purposes. If just reshaped array area requires > backup, bunch of array stripes prepared for reshape is stored in to > Migration Copy Area. In case of reshape interruption, Option ROM during > restart or mdadm during reshape restart (when no reboot occurs) will > restore Migration Copy Area to designation array. > Reshape can be continued form stable array stable state. > > The following series implements IMSM checkpointing procedure. I have applied most of these patches - some with some minor fixes. The major changes I have already mentioned. I will wait for you responses to those changes, and the other bug fixes you mentioned before considering a release of 3.2.2, but I would like to make that release in the next week or two. Thanks, NeilBrown > > --- > > Adam Kwolek, Krzysztof Wojcik (22): > imsm: Add migration record to intel_super > Support restore_stripes() from the given buffer > Define dummy functions to mdmon.c > imsm: Add support for copy area and backup operations > imsm: check migration compatibility > FIX: Initialize reshape structure > imsm: Add wait_for_reshape_imsm() implementation > imsm: Implement imsm_manage_reshape(), reshape workhorse > imsm: Check if array degradation has been changed > imsm: Clear migration record when no migration in progress > imsm: Add information about migration record to mdadm '-E' option > imsm: update blocks_per_migr_unit() to support migration record > Add reshape restart support for external metadata > imsm: Implement recover_backup_imsm() for imsm metadata > imsm: Disable checkpoint updating by mdmon for general migration > imsm: Add metadata update type for general migration check-pointing > imsm: Prepare checkpoint update for general migration > imsm: Apply checkpoint metadata update for general migration > FIX: Enable metadata updates for raid0 > Do not use backup file for external metadata > imsm: Remove user warning before reshape start > imsm: Unit Tests - remove backup-file during grow command > > > Assemble.c | 10 > Grow.c | 50 +- > mdadm.h | 7 > mdmon.c | 23 + > restripe.c | 101 +++- > super-intel.c | 1241 ++++++++++++++++++++++++++++++++++++++++++++-- > tests/imsm-grow-template | 5 > 7 files changed, 1322 insertions(+), 115 deletions(-) > -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
