LVM2 lib/cache/lvmcache.c ./WHATS_NEW

LVM2 lib/cache/lvmcache.c ./WHATS_NEW

[agk]

CVSROOT:	/cvs/lvm2
Module name:	LVM2
Changes by:	agk@sourceware.org	2008-09-16 18:05:11

Modified files:
	lib/cache      : lvmcache.c 
	.              : WHATS_NEW 

Log message:
	Avoid repeatedly wiping cache while VG_GLOBAL is held in vgscan & pvscan.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/cache/lvmcache.c.diff?cvsroot=lvm2&r1=1.59&r2=1.60
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/WHATS_NEW.diff?cvsroot=lvm2&r1=1.951&r2=1.952

--- LVM2/lib/cache/lvmcache.c	2008/06/27 15:18:31	1.59
+++ LVM2/lib/cache/lvmcache.c	2008/09/16 18:05:11	1.60
@@ -97,9 +97,10 @@
 	int was_locked = (info->status & CACHE_LOCKED) ? 1 : 0;
 
 	/*
-	 * Cache becomes invalid whenever lock state changes
+	 * Cache becomes invalid whenever lock state changes unless
+	 * exclusive VG_GLOBAL is held (i.e. while scanning).
 	 */
-	if (was_locked != locked) {
+	if (!vgname_is_locked(VG_GLOBAL) && (was_locked != locked)) {
 		info->status |= CACHE_INVALID;
 		*cached_vgmetadata_valid = 0;
 	}
@@ -166,7 +167,7 @@
 
 		/* Indicate that PVs could now be missing from the cache */
 		init_full_scan_done(0);
-	} else
+	} else if (!vgname_is_locked(VG_GLOBAL))
 		_drop_metadata(vgname);
 }
 
--- LVM2/WHATS_NEW	2008/09/12 15:26:44	1.951
+++ LVM2/WHATS_NEW	2008/09/16 18:05:11	1.952
@@ -1,5 +1,6 @@
 Version 2.02.40 - 
 ================================
+  Avoid repeatedly wiping cache while VG_GLOBAL is held in vgscan & pvscan.
   Fix pvresize to not allow resize if PV has two metadata areas.
   Fix setting of volume limit count if converting to lvm1 format.
   Fix vgconvert logical volume id metadata validation.

LVM2 lib/cache/lvmcache.c ./WHATS_NEW

[agk]

CVSROOT:	/cvs/lvm2
Module name:	LVM2
Changes by:	agk@sourceware.org	2008-04-24 02:22:07

Modified files:
	lib/cache      : lvmcache.c 
	.              : WHATS_NEW 

Log message:
	Exclude VG_GLOBAL from internal concurrent VG lock counter.
	(Avoids 'device left open' warning messages from vgscan etc.)

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/cache/lvmcache.c.diff?cvsroot=lvm2&r1=1.46&r2=1.47
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/WHATS_NEW.diff?cvsroot=lvm2&r1=1.860&r2=1.861

--- LVM2/lib/cache/lvmcache.c	2008/04/15 14:54:00	1.46
+++ LVM2/lib/cache/lvmcache.c	2008/04/24 02:22:06	1.47
@@ -156,7 +156,8 @@
 
 	_update_cache_lock_state(vgname, 1);
 
-	_vgs_locked++;
+	if (strcmp(vgname, VG_GLOBAL))
+		_vgs_locked++;
 }
 
 int vgname_is_locked(const char *vgname)
@@ -178,7 +179,7 @@
 	dm_hash_remove(_lock_hash, vgname);
 
 	/* FIXME Do this per-VG */
-	if (!--_vgs_locked)
+	if (strcmp(vgname, VG_GLOBAL) && !--_vgs_locked)
 		dev_close_all();
 }
 
--- LVM2/WHATS_NEW	2008/04/23 14:33:05	1.860
+++ LVM2/WHATS_NEW	2008/04/24 02:22:07	1.861
@@ -1,8 +1,9 @@
 Version 2.02.36 - 
 =================================
+  Exclude VG_GLOBAL from internal concurrent VG lock counter.
   Fix vgsplit internal counting of snapshot LVs.
-  Fix internal snapshot_count when vgmerge with snapshots in source VG.
-  Simply clvmd-openais by using non-async saLckResourceLock.
+  Fix vgmerge snapshot_count when source VG contains snapshots.
+  Simplify clvmd-openais by using non-async saLckResourceLock.
   Check lv_count in vg_validate.
   Fix internal LV counter when a snapshot is removed.
   Fix metadata corruption writing lvm1-formatted metadata with snapshots.