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78 Commits

Author SHA1 Message Date
Milan Broz
fa6dca9f28 Add infrastructure for queriying for remote locks. 
Current code, when need to ensure that volume is not
active on remote node, it need to try to exclusive
activate volume.

Patch adds simple clvmd command which queries all nodes
for lock for given resource.

The lock type is returned in reply in text.

(But code currently uses CR and EX modes only.)
 2009-05-19 10:38:58 +00:00
Milan Broz
dfbc015c69 Fix remote metadata backup for clvmd 
Run backup of metadata on remote nodes in the
same place like local node - when calling backup().

Introduce backup_locally() which calls only
local backup if needed.

Remote backup is now trigerred by LCK_VG_BACKUP flag
combination (special VG lock).

This lock type will call check_current_backup()
(including backup_locally() call) and updates
metadata on all nodes.

(Patch fixes non-functional remote backup,
current call during VG lock never triggers.)
 2009-04-22 09:39:45 +00:00
Alasdair Kergon
7f78616f3d clvmd 2008-11-04 16:41:47 +00:00
Alasdair Kergon
56d8844068 more fixes 2008-11-04 15:07:45 +00:00
Alasdair Kergon
3dfd8f12dc more cleanup 2008-05-09 19:26:58 +00:00
Alasdair Kergon
98fd1ce332 More P_ and V_ lock cleanup. 2008-05-09 18:45:15 +00:00
Alasdair Kergon
3d6af3e35e Add missing mutex around clvmd lvmcache_drop_metadata library call. 2008-05-09 15:13:20 +00:00
Milan Broz
581b17def2 Drop cached VG metadata before and after committing changes to it. 2008-04-15 14:46:19 +00:00
Alasdair Kergon
adb578238d rename P_global to P_#global 2008-04-15 11:36:46 +00:00
Patrick Caulfield
3303289137 When we unlock a VG tell the clvmds to see if a backup of the metadata needs 
to be done.
 2007-12-04 15:39:26 +00:00
Patrick Caulfield
5982271096 Locking P_global causes a cache refresh. 2007-08-23 15:43:20 +00:00
Patrick Caulfield
be313b1300 Allow clvmd debug to be turned on in a running daemon using clvmd -d 
You can do with cluster-wide too, by adding -C
 2007-08-17 11:51:23 +00:00
Patrick Caulfield
e1cd6dbc07 Misc clvmd cleanups from Jim Meyering 2007-05-02 12:22:40 +00:00
Alasdair Kergon
1bf5aae913 Change some #include lines to search only standard system directories. 2007-04-27 17:46:16 +00:00
Patrick Caulfield
e3e6eba1aa Fix gulm operation of clvmd. including a hang when attempting to 
exclusively lock an LV that is already locked no another node.
 2006-12-11 14:00:26 +00:00
Alasdair Kergon
a951e97ae9 clvmd ia64 alignment fixes etc. (pjc) 2006-12-01 23:10:26 +00:00
Alasdair Kergon
0357f18ef0 Fix VG clustered read locks to use PR not CR. 
VG metadata reads were not being locked out during metadata updates.
 2006-12-01 22:48:47 +00:00
Patrick Caulfield
efa483c599 Add clvmd call to return the cluster name. 2006-10-09 14:11:57 +00:00
Patrick Caulfield
2a7f7fc1c9 Vastly improve the errors returned to the user from clvmd. 
It now captures the error messages that are generated and returns them
in the reply packet rather than just telling the user to check syslog.
 2006-10-05 13:55:50 +00:00
Patrick Caulfield
13583874fc Add -R switch to clvmd. 
This option will instruct all the clvmd daemons in the cluster to reload their device cache
 2006-10-04 08:22:16 +00:00
Alasdair Kergon
3e3d5d8593 Add --monitor to vgcreate and lvcreate to control dmeventd registration. 
Propagate --monitor around cluster.
Filter LCK_NONBLOCK in clvmd lock_vg.
 2006-05-12 19:16:48 +00:00
Patrick Caulfield
c650c19805 Use hash functions in libdevmapper. 2005-11-09 09:24:10 +00:00
Alasdair Kergon
2262b32057 Use hash, bitset, malloc, pool from libdevmapper. 2005-10-16 23:03:59 +00:00
Patrick Caulfield
fe6c78629d clvmd no longer takes out locks for non-clusteed LVs, 
and non-clustered LVs are only activated on the local node.
 2005-08-16 08:25:09 +00:00
Patrick Caulfield
3329bbfdf3 make clvmd FDs close-on-exec, to avoid warnings when running lvm via popen. 
clvmd-gulm unlocks VG & orphan locks at startup in case they are stale.
clvmd-gulm now unlocks VG & orphan locks if client dies.
 2005-03-07 17:03:44 +00:00
Patrick Caulfield
8ef0b7b9ef Keep client locks (VG locks usually) in their own hash table so 
we can actually have more then one of them per client.
 2004-09-24 09:39:57 +00:00
Patrick Caulfield
421bb2e9bf Don't use hold_lock for VG locks as that doesn't stop processes contending 
on the same node, only across the cluster.
 2004-09-23 12:29:35 +00:00
Alasdair Kergon
d3c8211fef Add cluster support. 2004-06-24 08:02:38 +00:00