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Commit Graph

1855 Commits

Author SHA1 Message Date
Alasdair Kergon
6d25082d65 Fix is_partitioned_dev not to attempt to reopen device. 2010-04-06 17:36:41 +00:00
Dave Wysochanski
9e82787da2 Add add_pvl_to_vgs() - helper function to add a pv to a vg list.
Small refactor of main places in the code where a pv is added to a
vg into a small function which adds the pv to the list and updates
the vg counts.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
2010-04-06 14:04:54 +00:00
Dave Wysochanski
b4a9a2d313 Refactor format1 vg->pvs list add and vg->pv_count.
Refactor adding to the vg->pvs list and incrementing the count, which
will allow further refactoring.  Should be no functional change.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
2010-04-06 14:04:20 +00:00
Dave Wysochanski
36e9d03d1b Refactor _read_pv() code that updates vg->extent_count and vg->free_count.
Simple refactor to mov code that updates the vg extent counts from a
single pv's counts close to the code that adds a pv to vg->pvs and
updates vg->pv_count.  No functional change.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
2010-04-06 14:04:03 +00:00
Dave Wysochanski
53ad3cad14 Add pv to vg->pvs after check for maximum value of vg->extent_count.
In add_pv_to_vg(), we should only add the pv to vg->pvs after all
internal checks have passed.  The check for vg->extent_count exeeding
maximum was after we added the pv to the list, so this function could
return a state of vg->pvs that did not reflect other parameters such
as vg->pv_count.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
2010-04-06 14:03:43 +00:00
Alasdair Kergon
d27c8b5660 remove compiler warning 2010-04-02 01:35:34 +00:00
Alasdair Kergon
6ec52a01ee A few more log_error to log_warn changes for mirrors. 2010-04-01 14:54:37 +00:00
Zdenek Kabelac
ddf19eae0f Better debug message for Un/Locked memory size. 2010-04-01 14:53:47 +00:00
Alasdair Kergon
46bd6d7a2f temporarily downgrade the 'open while suspended' error till we fix it properly 2010-04-01 14:30:51 +00:00
Alasdair Kergon
abb9fb8370 Try to fix tracking of whether or not log extents need allocating. 2010-04-01 13:58:13 +00:00
Zdenek Kabelac
39b6ac476d Set ret value to success initially. 2010-04-01 13:43:12 +00:00
Alasdair Kergon
0c67893ce9 Avoid endless loop if lv->segments list is corrupted 2010-04-01 13:08:06 +00:00
Alasdair Kergon
e7159c828b initialise log_allocated to 0 2010-04-01 12:29:07 +00:00
Alasdair Kergon
d723636d52 Limit number of error messages when checking LV segments. 2010-04-01 12:14:20 +00:00
Alasdair Kergon
a1192f17ba Improve vg_validate to detect some loops in lists. 2010-04-01 11:45:36 +00:00
Alasdair Kergon
0640232acd Improve vg_validate to detect some loops in lists. 2010-04-01 11:43:24 +00:00
Alasdair Kergon
258db3ad8e Change most remaining log_error WARNING messages to log_warn. 2010-04-01 10:34:09 +00:00
Alasdair Kergon
bce2869d92 Attempt to fix non-ALLOC_ANYWHERE allocation code after recent changes broke
The preference given to the PVs with the largest free areas.
2010-03-31 20:26:04 +00:00
Milan Broz
d7cbaae1fd Always use blocking lock for VGs and orphan locks.
Because we have now strong rule for lock ordering:
 - VG locks must be taken in alphabetical order
 - ORPHAN locks must be the last
vgs_locked() is now not needed.

This fixes problem with orphan locking, e.g.
vgremove VG1    |    vgremove VG2
lock(VG1)       |    lock(VG2)
lock(ORPHAN)    |    lock(ORPHAN) -> fail, non-blocking

https://bugzilla.redhat.com/show_bug.cgi?id=578413

(More similar places in code.)
2010-03-31 17:23:56 +00:00
Milan Broz
6733116a19 Fix all segments memory is allocated from vg private mempool.
Physical segments were still allocated from global
command context mempool.

This leads to very high memory usage when
activating large VG (vgchange).
(Memory usage was about 2G when >3000LVs).

Fix it by properly using vg->vgmem private pool,
so all the memory is released early.

New memory pool parameter is needed here for pv_split_segment
function.

Also fix the same problem in some minor allocations
(vg description, lv segment split).
2010-03-31 17:23:18 +00:00
Milan Broz
0423887528 Do not traverse PV segment list twice.
In addition to previous patch, we really do not need
to search for segment which was just allocated in
split request.

Make pv_split_segment function return newly allocated
(split) segment also.

(So after this patch, there is only one user
of slow find_peg_by_pe).
2010-03-31 17:22:26 +00:00
Milan Broz
80b96a8974 Optimise PV segments search.
The function find_peg_by_pe is incredibly inefficient
for Pvs with many segments.

In shiny future there should be binary (or interval) tree
instead of sorted linked list (volunteers?).

Anyway, for now, we can use dirty trick here to optimise this case:

 - Allocations are usually applied from the beginning
 of PV (we have no alloocation policy which allocates areas
 "backwards")

 - The only user of find_peg_by_pe is pv_split_segment()
 call. In *most* cases it need to split *last* PV segment.

So if we search sorted pv segment list backwards, we
hit the requested segment immediatelly.

This patch applies this tiny change.
(and saves >30% of processing time when >3000LVs segments are on one PV!)

To discourage using this inefficient function from other code,
it is moved to pv_manip.c and used static for now:-)
2010-03-31 17:21:40 +00:00
Milan Broz
c8b0988586 Remove vg_validate call when parsing cached metadata.
vg_validate call is an adept to optimisation, it is very
ineeficient and slow.

Anyway, we should call it only before writing data to disk.

The call in lvmcache was just temporary validation,
we realy do not need to revalidate cached metadata
every time.
(Actually, I added that there just to prove that cache works
properly and forgot to remove it.)

Patch removes it from lvmcache completely, this can hit only
internal bug in export function (and this bug must
be detected in any vg_write call anyway before).
2010-03-31 17:20:44 +00:00
Milan Broz
d59a2b6109 Use hash table for quick lv reference when reading metadata.
The _read_vg uses already hash for PVs to optimise
reading of large VGs and avoiding repeated PV list traversing.

Use the same aproach to speed up parsing VG with many LVs.
2010-03-31 17:20:02 +00:00
Mikulas Patocka
655849fb14 A missing space in the error message.
Add missing parentheses to an error message

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
2010-03-31 12:06:30 +00:00
Zdenek Kabelac
5de52e34f0 Count only readable size for memlock stats.
As we mlock() only readable pages, makes statistics only
for readable bytes.
2010-03-30 14:41:58 +00:00
Zdenek Kabelac
3f67b36b35 Update memlock
Code moves initilization of stats values to _memlock_maps().
For dmeventd we need to use mlockall() - so avoid reading config value
and go with _use_mlockall code path.

Patch assumes dmeventd uses C locales!
Patch needs the call or memlock_inc_daemon() before memlock_inc()
(which is our common use case).

Some minor code cleanup patch for _un/_lock_mem_if_needed().
2010-03-30 14:41:23 +00:00
Alasdair Kergon
1dee5eb625 Fix --alloc contiguous policy only to allocate one set of parallel areas. 2010-03-29 17:59:46 +00:00
Zdenek Kabelac
b7be589ed0 Fixing another set of distclean problems where we left some generated files
in clvmd, dmevend, man, tests.

Don't include dependency files for clow and cscope.out targets

Improve dependency tracking for dmeventd and liblvm2cmd sources.
2010-03-29 14:17:59 +00:00
Zdenek Kabelac
b41f5924bf Update cflow file generation - support build dir and use $(top_srcdir)
to obtain sources. Create make.tmpl target for
simplier generation of cflow files with the help of
CFLOW_LIST, CFLOW_LIST_TARGET, CFLOW_TARGET.
Still cflow usage is not perfect.
2010-03-29 14:11:17 +00:00
Zdenek Kabelac
1a91d0914e distclean fixes
Move daemons/ and lib/ subtargets to their Makefiles so we don't get
double cleanup error during execution of distclean target.
Instead of duplicating clean target inside distclean target,
just use it as a subtarget and avoid add duplicating code.
2010-03-29 14:09:25 +00:00
Jonathan Earl Brassow
7a369d3704 Add ability to create mirrored logs for mirror LVs.
This check-in enables the 'mirrored' log type.  It can be specified
by using the '--mirrorlog' option as follows:
#> lvcreate -m1 --mirrorlog mirrored -L 5G -n lv vg

I've also included a couple updates to the testsuite.  These updates
include tests for the new log type, and some fixes to some of the
*lvconvert* tests.
2010-03-26 22:15:43 +00:00
Mike Snitzer
7b0f529d3e Fix clvmd cluster propagation of dmeventd monitoring mode.
clvmd's do_lock_lv() already properly controls dmeventd monitoring based
on LCK_DMEVENTD_MONITOR_MODE in lock_flags -- though one small fix was
needed for this to work: _lock_for_cluster() must treat
dmeventd_monitor_mode()'s return as a tri-state value.

Also cleanup do_lock_lv() to:
- explicitly init_dmeventd_monitor() based on LCK_DMEVENTD_MONITOR_MODE
- no longer reset init_dmeventd_monitor() to default at the end of
  do_lock_lv() -- it is unnecessary
2010-03-26 15:40:13 +00:00
Alasdair Kergon
2abbc07f3c Allow ALLOC_ANYWHERE to split contiguous areas. 2010-03-25 21:19:26 +00:00
Alasdair Kergon
a7ca334681 Add some assertions to allocation code. 2010-03-25 18:16:54 +00:00
Alasdair Kergon
f4cea344b1 improve a few comments in last check-in 2010-03-25 02:40:09 +00:00
Alasdair Kergon
8d6722c8ad Introduce pv_area_used into allocation algorithm and add debug messages.
This is the next preparatory step towards better --alloc anywhere
support and is not intended to break anything that currently works so
please report any problems - segfaults, bogus data in the new debug
messages, or if the code now chooses bizarre allocation layouts.
2010-03-25 02:31:48 +00:00
Mike Snitzer
a6bc975a24 Improve activation monitoring option processing
. Add "monitoring" option to "activation" section of lvm.conf
. Have clvmd consult the lvm.conf "activation/monitoring" too.
. Introduce toollib.c:get_activation_monitoring_mode().
. Error out when both --monitor and --ignoremonitoring are provided.
. Add --monitor and --ignoremonitoring support to lvcreate.  Update
  lvcreate man page accordingly.
. Clarify that '--monitor' controls the start and stop of monitoring in
  the {vg,lv}change man pages.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2010-03-23 22:30:18 +00:00
Petr Rockai
a2b6bbdfb2 Also honour abort_on_internal_errors when log_fn is set. 2010-03-23 18:18:49 +00:00
Alasdair Kergon
36f9d53b60 Allow dynamic extension of array of areas selected as allocation candidates. 2010-03-23 15:07:55 +00:00
Peter Rajnoha
5161ecb98d Autoreconf.
(Strictly require libudev if udev_sync is used)
2010-03-23 14:44:42 +00:00
Dave Wysochanski
15fdc8d3ee Avoid scanning all pvs in the system if operating on a device with mdas.
When we pv_read() a device that has an orphan vgname, we might need to scan
the system to be sure this is true.  However, if the PV has mdas, there's
no way possible for it to have an orphan vgname unless it is a true orphan.
Some areas of the code were optimized to take advantage of this fact, while
others were not (we would still do the expensive scan if a device had mdas
but had an orphan VG).

This patch unifies the code so that every place we are operating on such
a PV, we skip the expensive scan if there are mdas.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Acked-by: Petr Rockai <prockai@redhat.com>
Acked-by: Alasdair G Kergon <agk@redhat.com>
2010-03-18 17:29:12 +00:00
Alasdair Kergon
1091650a79 autoreconf & add missing WHATS_NEW entry 2010-03-18 13:24:35 +00:00
Petr Rockai
649c45078f Add infrastructure for running the functional testsuite with locking_type set
to 3, using a local (singlenode) clvmd.
2010-03-18 09:19:30 +00:00
Milan Broz
acb4b5e4de Fix pvcreate device check.
If user try to vgcreate or vgextend non-existent VG,
these messages appears:

# vgcreate xxx /dev/xxx
  Internal error: Volume Group xxx was not unlocked
  Device /dev/xxx not found (or ignored by filtering).
  Unable to add physical volume '/dev/xxx' to volume group 'xxx'.
  Internal error: Attempt to unlock unlocked VG xxx.

(the same with existing VG and non-existing PV & vgextend)
# vgextend vg_test /dev/xxx
...

It is caused because code tries to "refresh" cache if
md filter is switched on using cache destroy.

But we can change filters and rescan even without this
machinery now, just use refresh_filters
(and reset md filter afterwards).

(Patch also  discovers cache alias bug in vgsplit test,
fix it by using better filter line.)
2010-03-17 14:44:18 +00:00
Alasdair Kergon
0a5182fc97 Suppress repeated errors about the same missing PV uuids.
Bypass full device scans when using internally-cached VG metadata.
2010-03-17 02:11:18 +00:00
Alasdair Kergon
f168869702 fix last checkin 2010-03-16 19:06:57 +00:00
Alasdair Kergon
b1f9a2f5d1 Only do one full device scan during each read of text format metadata. 2010-03-16 17:30:00 +00:00
Alasdair Kergon
38220f9fe9 Remove unnecessary full_scan parameter from get_vgids and get_vgnames calls. 2010-03-16 16:57:03 +00:00
Alasdair Kergon
cccae7e633 Look up missing PVs by uuid not dev_name in _pvs_single to avoid invalid stat.
Make find_pv_in_vg_by_uuid() return same type as related functions.
2010-03-16 15:30:48 +00:00