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LVM2 ./WHATS_NEW_DM libdm/libdm-deptree.c
- From: agk at sourceware dot org
- To: lvm-devel at redhat dot com, lvm2-cvs at sourceware dot org
- Date: 15 May 2012 21:27:28 -0000
- Subject: LVM2 ./WHATS_NEW_DM libdm/libdm-deptree.c
CVSROOT: /cvs/lvm2
Module name: LVM2
Changes by: agk@sourceware.org 2012-05-15 21:27:25
Modified files:
. : WHATS_NEW_DM
libdm : libdm-deptree.c
Log message:
Set delay_resume_if_new on deptree snapshot origin.
(Must avoid activating snapshot origin more than once concurrently.)
Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/WHATS_NEW_DM.diff?cvsroot=lvm2&r1=1.601&r2=1.602
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/libdm/libdm-deptree.c.diff?cvsroot=lvm2&r1=1.165&r2=1.166
--- LVM2/WHATS_NEW_DM 2012/05/08 14:31:44 1.601
+++ LVM2/WHATS_NEW_DM 2012/05/15 21:27:24 1.602
@@ -1,5 +1,6 @@
Version 1.02.75 -
================================
+ Set delay_resume_if_new on deptree snapshot origin.
Log value chosen in _find_config_bool like other variable types do.
Synchronize with dead of dmeventd.
Rename (Blk)DevNames/DevNos dmsetup header to (Blk)DevNamesUsed/DevNosUsed.
--- LVM2/libdm/libdm-deptree.c 2012/05/15 20:03:12 1.165
+++ LVM2/libdm/libdm-deptree.c 2012/05/15 21:27:24 1.166
@@ -2358,8 +2358,10 @@
if ((r = dm_task_run(dmt))) {
r = dm_task_get_info(dmt, &dnode->info);
if (r && !dnode->info.inactive_table)
- log_verbose("Suppressed %s identical table reload.",
- dnode->name);
+ log_verbose("Suppressed %s (%" PRIu32 ":%" PRIu32
+ ") identical table reload.",
+ dnode->name,
+ dnode->info.major, dnode->info.minor);
existing_table_size = dm_task_get_existing_table_size(dmt);
if ((dnode->props.size_changed =
@@ -2548,6 +2550,12 @@
/* Resume snapshot origins after new snapshots */
dnode->activation_priority = 1;
+ /*
+ * Don't resume the origin immediately in case it is a non-trivial
+ * target that must not be active more than once concurrently!
+ */
+ origin_node->props.delay_resume_if_new = 1;
+
return 1;
}