[lvm-devel] master - lvconvert: add segtype raid5_n and conversions to/from it (cleanup)
Heinz Mauelshagen
mauelsha at fedoraproject.org
Tue Feb 7 15:52:24 UTC 2017
Gitweb: http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=91c4bd14d0a6d07366375e86e6cdff0da2e2bdc4
Commit: 91c4bd14d0a6d07366375e86e6cdff0da2e2bdc4
Parent: cfb6ef654d3d1f1dd02569a1d5bd2fc252ae2494
Author: Heinz Mauelshagen <heinzm at redhat.com>
AuthorDate: Tue Feb 7 12:25:26 2017 +0100
Committer: Heinz Mauelshagen <heinzm at redhat.com>
CommitterDate: Tue Feb 7 12:25:26 2017 +0100
lvconvert: add segtype raid5_n and conversions to/from it (cleanup)
Cleanups as of Jons review:
- enhance comment about mandatory raid4 <-> raid5_n activation w/o metadata SubLVs
- remove bogus segment flag setting
- fix to sync related comments on conversions to raid0/striped and amongst raid4/5
- add missing error message for non-synced conversion to raid0/striped
Related: rhbz1366296
---
lib/metadata/merge.c | 9 ++++++++-
lib/metadata/raid_manip.c | 11 +++++++----
2 files changed, 15 insertions(+), 5 deletions(-)
diff --git a/lib/metadata/merge.c b/lib/metadata/merge.c
index dbd91db..6311818 100644
--- a/lib/metadata/merge.c
+++ b/lib/metadata/merge.c
@@ -148,7 +148,14 @@ static void _check_raid1_seg(struct lv_segment *seg, int *error_count)
static void _check_raid45610_seg(struct lv_segment *seg, int *error_count)
{
/* Checks applying to any raid4/5/6/10 */
- /* Allow raid4 + raid5_n to get activated w/o metadata (mandatory during conversion between them) */
+ /*
+ * Allow raid4 + raid5_n to get activated w/o metadata.
+ *
+ * This is mandatory during conversion between them,
+ * because switching the dedicated parity SubLVs
+ * beginning <-> end changes the roles of all SubLVs
+ * which the kernel would reject.
+ */
if (!(seg_is_raid4(seg) || seg_is_raid5_n(seg)) && !seg->meta_areas)
raid_seg_error("no meta areas");
if (!seg->stripe_size)
diff --git a/lib/metadata/raid_manip.c b/lib/metadata/raid_manip.c
index 9b9f5f3..0c541fb 100644
--- a/lib/metadata/raid_manip.c
+++ b/lib/metadata/raid_manip.c
@@ -2196,7 +2196,7 @@ static int _convert_mirror_to_raid1(struct logical_volume *lv,
lv->status &= ~MIRROR;
lv->status &= ~MIRRORED;
lv->status |= RAID;
- seg->status |= RAID;
+ seg->status |= SEG_RAID;
if (!lv_update_and_reload(lv))
return_0;
@@ -3114,9 +3114,12 @@ static int _raid456_to_raid0_or_striped_wrapper(TAKEOVER_FN_ARGS)
dm_list_init(&removal_lvs);
- /* Necessary when convering to raid0/striped w/o redundancy? */
- if (!_raid_in_sync(lv))
+ /* Necessary when converting to raid0/striped w/o redundancy. */
+ if (!_raid_in_sync(lv)) {
+ log_error("Unable to convert %s while it is not in-sync.",
+ display_lvname(lv));
return 0;
+ }
if (!yes && yes_no_prompt("Are you sure you want to convert \"%s\" LV %s to \"%s\" "
"type losing %s resilience? [y/n]: ",
@@ -3224,7 +3227,7 @@ static int _raid45_to_raid54_wrapper(TAKEOVER_FN_ARGS)
}
- /* Necessary when convering to raid0/striped w/o redundancy? */
+ /* Necessary when convering to raid0/striped w/o redundancy. */
if (!_raid_in_sync(lv)) {
log_error("Unable to convert %s while it is not in-sync.",
display_lvname(lv));
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