lvm2/6031-lvmlockd-fix-missing-LV-lock-for-lvconvert-repair.patch
2019-09-30 11:03:04 -04:00

49 lines
1.7 KiB
Diff

From ec6ba10081488699edaba1c80ef69f5a14bced00 Mon Sep 17 00:00:00 2001
From: root <root@localhost.localdomain>
Date: Wed, 13 Mar 2019 22:20:42 +0800
Subject: [PATCH 15/19] lvmlockd: fix missing LV lock for lvconvert repair
Add missing lvmlockd LV lock for lvconvert repair
on mirror and thin/cache pools.
---
tools/lvconvert.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/tools/lvconvert.c b/tools/lvconvert.c
index d7a618d..794877e 100644
--- a/tools/lvconvert.c
+++ b/tools/lvconvert.c
@@ -3461,6 +3461,18 @@ static int _lvconvert_repair_pvs_mirror(struct cmd_context *cmd, struct logical_
struct lvinfo info;
int ret;
+ /*
+ * We want to allow cmirror active on multiple nodes to be repaired,
+ * but normal mirror to only be repaired if active exclusively here.
+ * If the LV is active it already has the necessary lock, but if not
+ * active, then require ex since we cannot know the active state on
+ * other hosts.
+ */
+ if (!lv_is_active(lv)) {
+ if (!lockd_lv(cmd, lv, "ex", 0))
+ return_0;
+ }
+
/*
* FIXME: temporary use of lp because _lvconvert_mirrors_repair()
* and _aux() still use lp fields everywhere.
@@ -3594,6 +3606,10 @@ static int _lvconvert_repair_cachepool_thinpool(struct cmd_context *cmd, struct
int poolmetadataspare = arg_int_value(cmd, poolmetadataspare_ARG, DEFAULT_POOL_METADATA_SPARE);
struct dm_list *use_pvh;
+ /* ensure it's not active elsewhere. */
+ if (!lockd_lv(cmd, lv, "ex", 0))
+ return_0;
+
if (cmd->position_argc > 1) {
/* First pos arg is required LV, remaining are optional PVs. */
if (!(use_pvh = create_pv_list(cmd->mem, lv->vg, cmd->position_argc - 1, cmd->position_argv + 1, 0)))
--
2.19.1