lvm2/lvm2-2_02_99-init-lvmetad-lazily-to-avoid-early-socket-access-on-config-overrides.patch
Peter Rajnoha 785220f1ca lvmetad enabled by default, add lvm2-activation-generator and related fixes
- Add lvm2-activation-generator systemd generator to automatically
  systemd units to activate LVM2 volumes even if lvmetad is not
  This replaces lvm activation part of the former fedora-storage-init
  script that was included in the initscripts package before.
- Enable lvmetad - the LVM metadata daemon by default.
- Don't use lvmetad in lvm2-monitor.service ExecStop to avoid a systemd issue.
- Remove dependency on fedora-storage-init.service in lvm2 systemd units.
- Depend on lvm2-lvmetad.socket in lvm2-monitor.service systemd unit.
- Init lvmetad lazily to avoid early socket access on config overrides.
- Hardcode use_lvmetad=0 if cluster locking used and issue a warning  msg.
- Fix dm_task_set_cookie to properly process udev flags if udev_sync disabled.
2012-11-01 09:49:55 +01:00

112 lines
3.5 KiB
Diff

diff --git a/WHATS_NEW b/WHATS_NEW
index 5887ec7..d0e0cd4 100644
--- a/WHATS_NEW
+++ b/WHATS_NEW
@@ -1,5 +1,6 @@
Version 2.02.99 -
===================================
+ Initialize lvmetad lazily to avoid early socket access on config overrides.
Hardcode use_lvmetad=0 if cluster locking used and issue a warning msg.
Version 2.02.98 - 15th October 2012
diff --git a/lib/cache/lvmetad.c b/lib/cache/lvmetad.c
index 6a374ac..72e07fd 100644
--- a/lib/cache/lvmetad.c
+++ b/lib/cache/lvmetad.c
@@ -33,7 +33,8 @@ static struct cmd_context *_lvmetad_cmd = NULL;
void lvmetad_disconnect(void)
{
- daemon_close(_lvmetad);
+ if (_lvmetad_connected)
+ daemon_close(_lvmetad);
_lvmetad_connected = 0;
_lvmetad_cmd = NULL;
}
@@ -41,19 +42,25 @@ void lvmetad_disconnect(void)
void lvmetad_init(struct cmd_context *cmd)
{
if (!_lvmetad_use && !access(LVMETAD_PIDFILE, F_OK))
- log_warn("WARNING: lvmetad is running but disabled. Restart lvmetad before enabling it!");
+ log_warn("WARNING: lvmetad is running but disabled."
+ " Restart lvmetad before enabling it!");
+ _lvmetad_cmd = cmd;
+}
+
+static void _lvmetad_connect()
+{
if (_lvmetad_use && _lvmetad_socket && !_lvmetad_connected) {
assert(_lvmetad_socket);
_lvmetad = lvmetad_open(_lvmetad_socket);
- if (_lvmetad.socket_fd >= 0 && !_lvmetad.error) {
+ if (_lvmetad.socket_fd >= 0 && !_lvmetad.error)
_lvmetad_connected = 1;
- _lvmetad_cmd = cmd;
- }
}
}
void lvmetad_warning(void)
{
+ if (!_lvmetad_connected)
+ _lvmetad_connect();
if (_lvmetad_use && (_lvmetad.socket_fd < 0 || _lvmetad.error))
log_warn("WARNING: Failed to connect to lvmetad: %s. Falling back to internal scanning.",
strerror(_lvmetad.error));
@@ -61,7 +68,11 @@ void lvmetad_warning(void)
int lvmetad_active(void)
{
- return _lvmetad_use && _lvmetad_connected;
+ if (!_lvmetad_use)
+ return 0;
+ if (!_lvmetad_connected)
+ _lvmetad_connect();
+ return _lvmetad_connected;
}
void lvmetad_set_active(int active)
@@ -873,6 +884,11 @@ int lvmetad_pvscan_all_devs(struct cmd_context *cmd, activation_handler handler)
char *future_token;
int was_silent;
+ if (!lvmetad_active()) {
+ log_error("Cannot proceed since lvmetad is not active.");
+ return 0;
+ }
+
if (!(iter = dev_iter_create(cmd->lvmetad_filter, 1))) {
log_error("dev_iter creation failed");
return 0;
diff --git a/test/shell/lvmetad-override.sh b/test/shell/lvmetad-override.sh
new file mode 100644
index 0000000..3fb281a
--- /dev/null
+++ b/test/shell/lvmetad-override.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+# Copyright (C) 2012 Red Hat, Inc. All rights reserved.
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU General Public License v.2.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+. lib/test
+
+test -e LOCAL_LVMETAD || skip
+aux prepare_pvs 2
+
+vgcreate $vg1 $dev1 $dev2
+lvchange -ay $vg1 2>&1 | not grep "Failed to connect"
+kill $(cat LOCAL_LVMETAD)
+lvchange -ay $vg1 2>&1 | grep "Failed to connect"
+lvchange -ay $vg1 --sysinit 2>&1 | not grep "Failed to connect"
+lvchange -ay $vg1 --config 'global { use_lvmetad = 0 }' 2>&1 | not grep "Failed to connect"
+aux lvmconf "global/use_lvmetad = 0"
+lvchange -ay $vg1 --config 'global { use_lvmetad = 1 }' 2>&1 | grep "Failed to connect"
+