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Commit Graph

314 Commits

Author SHA1 Message Date
Zdenek Kabelac
97d7e5aedb Thin supports snapshots
Full support for thin snapshots.
Create and remove is supported.

TODO: lvconvert support is not yes available.
2011-11-07 11:03:47 +00:00
Zdenek Kabelac
96279ac1c0 Make detach_pool_message visible for tools
Move there also vg_write and vg_commit.
2011-10-30 22:01:39 +00:00
Zdenek Kabelac
0968dfcd03 Thin support for stripe
Support stripe options to create thin data pool LV.

TODO: combine chunk size and stripe size.
2011-10-28 20:32:54 +00:00
Zdenek Kabelac
f4c77bd0e3 Recoded way to insert thin pool into vg
Code in _lv_insert_empty_sublvs  was not able to provide proper
initialization order for thin pool LV.

New function extend_pool() first adds metadata segment to pool LV which
is still visible. Such LV is activate and cleared.

Then new meta LV is created and metadata segments are moved there.
Now the preallocated pool data segment is attached to the pool LV
and layer _tpool is created. Finaly segment is marked as thin_pool.
2011-10-22 16:44:23 +00:00
Zdenek Kabelac
06b8248d63 Make move_lv_segment non-static
This function could be useful for other _manip source files.

Use dm_list manipulation function for provided functionality,
which make the code more readable and avoid touching list
internal details here.
2011-10-22 16:42:10 +00:00
Zdenek Kabelac
8de912b677 Simple validation of messages in mda
Check we do not combine multiple messages for same LV target
and switch to use  'delete_id' to make it clear for what this device_id
is being used.
2011-10-19 16:39:09 +00:00
Zdenek Kabelac
a25434a3a3 Message support for thin provisiong
lvm part of messaging.

Each message is now stored it's own thin pool section:

message1 {
	create = lv
}

Messages are queued to thin pool dm target when this target
is going to be resumed or used through some dependency.

Currently  'delete' message are purely queued and processed
with next thin pool resume operation (i.e. create_thin).

WARNING - thin provisioning support is developmental code.
2011-10-17 14:17:09 +00:00
Zdenek Kabelac
d35a117e4b Add simple function for lookup of some free device_id
Initial simple implementation for finding some free device_id.
2011-10-03 18:39:17 +00:00
Alasdair Kergon
5081181b5d Append z to lv_attr if new blocks will be zeroed. 2011-09-09 01:15:18 +00:00
Alasdair Kergon
ef78ebf35a lvcreate/remove thin_pool and thin volumes (--driverloaded n only) 2011-09-08 16:41:18 +00:00
Alasdair Kergon
bb6f9b10db pool attach fns & more field renaming 2011-09-06 22:43:56 +00:00
Alasdair Kergon
b88362ff95 add thin_manip.c like the other manip files
move basic lv_is_* to macros
data_lv -> pool_lv - we decided to call it 'pool' everywhere now
2011-09-06 19:25:42 +00:00
Alasdair Kergon
2ef5b7cca6 Start using 64-bit status flags - most of the code already handles them.
tdata -> tpool
remove commented out definitions from metadata.h
formatting clean-ups
2011-09-06 18:49:31 +00:00
Zdenek Kabelac
3caa77f831 Use size_t return type
Since these function returns buffer size - use size_t type for them.
2011-09-01 10:25:22 +00:00
Petr Rockai
e59e2f7c3c Move the core of the lib/config/config.c functionality into libdevmapper,
leaving behind the LVM-specific parts of the code (convenience wrappers that
handle `struct device` and `struct cmd_context`, basically). A number of
functions have been renamed (in addition to getting a dm_ prefix) -- namely,
all of the config interface now has a dm_config_ prefix.
2011-08-30 14:55:15 +00:00
Zdenek Kabelac
789f9c55e5 Remove INCONSISTENT_VG flag
As this flag could not have been set by the current code - removing it.

Note: because of the wrong code logic this call:

lvmcache_update_vg(correct_vg, correct_vg->status & PRECOMMITTED &
			   (inconsistent ? INCONSISTENT_VG : 0));

had always passed '0' - now after flag removal it's passing
PRECOMMITTED flag in - this present functinal change in this patch.

To match the original functionality - 0 had to be always passed.
More testing is needed here.
2011-08-10 20:17:33 +00:00
Jonathan Earl Brassow
cac52ca4ce Add basic RAID segment type(s) support.
Implementation described in doc/lvm2-raid.txt.

Basic support includes:
- ability to create RAID 1/4/5/6 arrays
- ability to delete RAID arrays
- ability to display RAID arrays
Notable missing features (not included in this patch):
- ability to clean-up/repair failures
- ability to convert RAID segment types
- ability to monitor RAID segment types
2011-08-02 22:07:20 +00:00
Alasdair Kergon
0f2a4ca2b5 When suspending, automatically preload newly-visible existing LVs
Let's find out if this makes things better or worse overall...
2011-06-30 18:25:18 +00:00
Zdenek Kabelac
93a98c2672 Remove unused internal flag ACTIVATE_EXCL from the code 2011-06-17 14:30:58 +00:00
Petr Rockai
6d25c0d26f Fix RHBZ 651590 (failure to lock LV results in failure to repair mirror after
transient error), stemming from the following sequence of events:

1) devices fail IO, triggering repair
2) dmeventd starts fixing up the mirror
3) during the downconversion, a new metadata version is written

--> the devices come back online here

4) the mirror device suspend/resume is called to update DM tables
5) during the suspend/resume cycle, *pre*-commit metadata is read;
   however, since the failed devices are now back online, we get back
   inconsistent set of precommit metadata and the whole operation fails

The patch relaxes the check that fails in step 5 above, namely by ignoring
inconsistencies coming from PVs that are marked MISSING.
2011-06-15 17:45:02 +00:00
Alasdair Kergon
3cac20f850 Defer writing PV labels to vg_write.
Store label_sector only in struct physical_volume.
2011-06-01 19:29:31 +00:00
Petr Rockai
833a287337 Make vg_mark_partial_lvs also clear existing PARTIAL_LV flags, so it can be
issued repeatedly on the same VG, keeping the PARTIAL_LV flags up to date.
2011-05-07 13:32:05 +00:00
Peter Rajnoha
1307ddf4cf Use only vg_set_fid and new pv_set_fid fn to assign the format instance.
This is essential for proper format instance ref_count support. We must
use these functions to set the fid everywhere from now on, even the NULL
value!
2011-03-11 14:50:13 +00:00
Peter Rajnoha
56f5b12eed Use new alloc_fid fn for common format instance initialisation. 2011-03-11 14:30:27 +00:00
Peter Rajnoha
3b97e8d643 Allow non-orphan PVs with two metadata areas to be resized.
We allow writing non-orphan PVs only for resize now. The "orphan PV" assert
in pv_write fn uses the "allow_non_orphan" parameter to control this assert.
However, we should find a more elaborate solution so we can remove this
restriction altogether (pv_write together with vg_write is not atomic, we
need to find a safe mechanism so there's an easy revert possible in case of
an error).
2011-02-28 13:19:02 +00:00
Peter Rajnoha
cb2396730a Change pvresize code to work with new metadata handling interface and allow
resizing a PV with two metadata areas.
2011-02-21 12:27:26 +00:00
Peter Rajnoha
17ad2b1115 Change pv_write code to work with the changes in metadata handling interface
and changes in format_instance.
2011-02-21 12:26:27 +00:00
Peter Rajnoha
94d91fdda1 Change the code throughout to use new pv_initialise and modified pv_setup fn.
Change pv_create code to work with these changes together with using new
pv_add_metadata_area fn to add metadata areas for a PV being created.
2011-02-21 12:24:15 +00:00
Peter Rajnoha
617b900d85 Separate new pv_initialise function out of the original pv_setup code.
pv_initiliase initialises a new PV
pv_setup sets up an existing PV with a VG
2011-02-21 12:20:18 +00:00
Peter Rajnoha
981895a860 Add new pv_remove_metadata_area interface function. 2011-02-21 12:17:54 +00:00
Peter Rajnoha
8d5d20a526 Add new pv_add_metadata_area interface function. 2011-02-21 12:17:26 +00:00
Peter Rajnoha
305816232d Remove useless mdas parameter for pv_read (from now on, we store mdas in a
format instance)
2011-02-21 12:15:59 +00:00
Peter Rajnoha
f8b78ec613 Add vg_set_fid function to change VG format instance.
This function also sets a reference to a new VG format instance for all PVs
that are part of the VG so the PV-VG interconnection is consistent after the
change.
2011-02-21 12:10:58 +00:00
Peter Rajnoha
88129db5e1 Change create_instance to create PV-based as well as VG-based format instances.
Add supporting functions to work with the format instance and metadata area
structures stored within the format instance. Add support for simple indexing
of metadata areas using PV id and mda order (for on-disk PV only for now, we
can extend the indexing even for other mdas if needed - we only need to define
a proper key for the index).
2011-02-21 12:05:49 +00:00
Peter Rajnoha
716c4ebe52 Change and generalise struct format_instance for PV and VG use. 2011-02-21 12:01:22 +00:00
Zdenek Kabelac
794e94fe16 Replace PV_MIN_SIZE with function pv_min_size()
Add configurable option to define minimal size of
of block device usable as a PV.

pv_min_size() is added to lvm-globals and it's being
initialized through _process_config.

Macro PV_MIN_SIZE is unused and removed.

New define DEFAULT_PV_MIN_SIZE_KB is added to lvm-global
and unlike PV_MIN_SIZE it uses KB units.

Should help users with various slow devices attached to the system,
which cannot be easily filtered out (like FDD on /dev/sdX):
https://bugzilla.redhat.com/show_bug.cgi?id=644578
2011-02-18 14:11:22 +00:00
Zdenek Kabelac
6feecf76d4 Change import_vg_from_buffer to use config_tree
Change function import_vg_from_buffer() to import_vg_from_config_tree().
Instead of creating config tree inside the function allow config tree to
be passed as parameter - usable later for caching.
2011-01-10 13:13:42 +00:00
Zdenek Kabelac
9d9de35dca Remove const usage from destroy callbacks
As const segment_type or const format_type are never released
use their non-const version and remove const downcast from dm_free calls.
This change fixes many gcc warnings we were getting from them.
2010-12-20 13:32:49 +00:00
Zdenek Kabelac
ba96eb24fa Some const cleanups
Minor const warning fixes and internal API updates.
2010-12-20 13:19:13 +00:00
Alasdair Kergon
acb037657c Fix scanning of VGs without in-PV mdas.
Set cmd->independent_metadata_areas if metadata/dirs or disk_areas in use.
- Identify and record this state.

Don't skip full scan when independent mdas are present even if memlock is set.
- Clusters and OOM aren't supported, so no problem doing the proper scans.

Avoid revalidating the label cache immediately after scanning.
- A simple optimisation.

Support scanning for a single VG in independent mdas.
- Not used by the fix but I left it in anyway as later patches might use it.
2010-12-10 22:39:52 +00:00
Alasdair Kergon
2aa06d73ca pre-release 2010-10-25 13:54:29 +00:00
Dave Wysochanski
637ac19e60 Rename 'flags' to 'status' for struct metadata_area.
In other LVM memory structures such as volume_group, the field
used to store flags is called "status", and on-disk fields are called
'flags', so rename the one inside metadata_area to be consistent.
Not only is it more consistent with existing code but is cleaner
to say "the status of this mda is ignored".

Background for this patch - prajnoha pinged me on IRC this morning
about a fix he was working on related to metadataignore when
metadata/dirs was set.  I was reviewing my patches from this year
and realized the 'flags' field was probably not the best choice
when I originally did the metadataignore patches.
2010-10-05 17:34:05 +00:00
Dave Wysochanski
0ca1492ca5 Fix copyright dates on new files lib/metadata/{lv|vg|pv}.[ch]. 2010-09-30 20:47:18 +00:00
Dave Wysochanski
f15033c0e1 Add tags_format_and_copy() common function and call from _tags_disp.
Add a common function to allocate memory and format a string of
tags.
Call tags_format_and_copy() from _tags_disp().
2010-09-30 14:08:07 +00:00
Dave Wysochanski
14663348d0 Add {pv|vg|lv}_attr_dup() functions and refactor 'disp' functions.
Move the creating of the 'attr' strings into a common function so
they can be called from the 'disp' functions as well as the new
'get' property functions.
Add "_dup" suffix to indicate memory is allocated.
Refactor pvstatus_disp to take pv argument and call pv_attr_dup().
2010-09-30 13:52:55 +00:00
Dave Wysochanski
81f0124a58 Refactor metadata.[ch] into vg.[ch] for vg functions.
The metadata.[ch] files are very large.  This patch makes a first
attempt at separating out vg functions and data, particularly
related to the reporting fields calculations.
2010-09-30 13:04:55 +00:00
Milan Broz
c7af31dbd7 Fix return type qualifier to avoid compiler warning.
introduced in commit b16b4d92a7
"Improve various log messages."

fixes a lot of
../include/metadata.h:148: warning: type qualifiers ignored on function return type
2010-08-26 12:08:19 +00:00
Dave Wysochanski
69d67dc2ca Add vg_mda_size and vg_mda_free functions.
Add supporting functions to get vg_mda_size and vg_mda_free fields.
Should be no functional change.
2010-08-20 12:43:49 +00:00
Dave Wysochanski
a5fb2bbff3 Pass metadataignore to pv_create, pv_setup, _mda_setup, and add_mda.
Pass metadataignore through PV creation / setup paths.
As a result of this cleanup, we can remove the unnecessary setting
of mda_ignore bits inside pvcreate_single(), after call to pv_create.
For now, just set metadataignore to '0' in some places.  This is
equivalent to the prior functionality, although the 0 is given
by the caller not hardcoded in _mda_setup() call.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
2010-07-08 18:24:29 +00:00
Alasdair Kergon
7f7af46862 Adjust auto-metadata repair and caching logic to try to cope with empty mdas.
- If a PV contained empty mdas, the auto-recovery code was not kicking in.
- The 'inconsistent' state was getting lost when metadata was cached so
  recovery didn't kick in.  But leave the behaviour alone when using
  precommitted metadata because of a warning in a confusing FIXME.

In my testing, pvs and vgs didn't repair inconsistent metadata like they
used to do.  (How many other tools fail similarly now?)

And there should be no need to cache inconsistent metadata because it is
supposed to get repaired under the protection of a write lock immediately it is
discovered.

This code is in need of a redesign based on first principles.
I still see bugs in this code and this commit is risky.
2010-07-07 02:53:16 +00:00
Alasdair Kergon
647c64c796 Improve various log messages. 2010-06-30 13:51:11 +00:00
Dave Wysochanski
d37dd5b2d3 Improve logging for metadata ignore by printing device name.
Print device name when setting or clearing metadata ignore bit.
Example:
label/label.c:160       /dev/loop2: lvm2 label detected
cache/lvmcache.c:1136         lvmcache: /dev/loop2: now in VG #orphans_lvm2 (#orphans_lvm2)
metadata/metadata.c:4142     Setting mda ignored flag for metadata_locn /dev/loop2.
format_text/text_label.c:318     Skipping mda with ignored flag on device /dev/loop2 at offset 4096
2010-06-29 22:37:32 +00:00
Dave Wysochanski
710c9373bf Add some log_verbose debug statements related to metadataignore.
Logging isn't ideal, especially for mda_set_ignore.  Ideally we'd
like to display the device name and offset in this case but this
requires a bit more work and a per-format 'mda_description' function
pointer definition (we don't have access to mda_context in
metadata.c).
2010-06-29 22:25:58 +00:00
Dave Wysochanski
f9c307cd07 Add mdas_empty_or_ignored() helper function.
Add a helper function to consolidate checking for an empty mdas list
or ignored mdas.  Ignored mdas should behave almost identically to
an empty mda list - the metadata areas should not be read or written
to.  This function will make it easier to implement metadata balancing
and easier to track pvs with an empty mda list or ignored mdas.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
2010-06-28 20:34:40 +00:00
Dave Wysochanski
9ccac021a7 Add metadata_areas_ignored list and functions to manage ignored mdas.
Add a second mda list, metadata_areas_ignored to fid, and a couple
functions, fid_add_mda() and fid_add_mdas() to help manage the lists.

These functions are needed to properly count the ignored mdas and
manage the lists attached to the 'fid' and ultimately the 'vg'.

Ensure metadata_areas_ignored is initialized in other formats, even
if the list is never used.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
2010-06-28 20:33:22 +00:00
Dave Wysochanski
f55a20eb36 Rename fid->metadata_areas to fid->metadata_areas_in_use.
Rename the metadata_areas list to an 'in_use' list to prepare for
future 'ignored' list.
2010-06-28 20:32:44 +00:00
Dave Wysochanski
ef4fa155a5 Add mda location specific mda_copy constructor.
Because of the way mdas are handled internally, where a PV in a VG
has mdas on both info->mdas and vg->fid->metadata_areas list, we
need a location independent copy constructor for struct
metadata_area.  Break up the existing format-text specific copy
constructor into a format independent piece and a format dependent
piece.

This function is necessary to properly implement pv_set_mda_ignored().

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Reviewed-by: Alasdair G Kergon <agk@redhat.com>
2010-06-28 20:31:59 +00:00
Dave Wysochanski
29f24d4634 Add mda_locns_match() internal library function for mapping pv/device to VG mda.
A metadata_area is defined independent of the location.  One downside
is that there is no obvious mapping from a pv to an mda.  For a PV in
a VG, we need a way to start with a PV and end up with an MDA, if we
are to manage mdas starting with a device/pv.  This function provides
us a way to go down the list of PVs on a VG, and identify which ones
match a particular PV.

I'm not entirely happy with this approach, but it does fit into the
existing structures in a reasonable way.

An alternative solution might be to refactor the VG - PV interface such
that mdas are a list tied to a PV.  However, this seemed a bit tricky since
a PV does not come into existence until after the list of mdas is
constructed (see _vg_read() - we create a 'fid' and attach mdas to it,
then we go through them and attach pvs).

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Reviewed-by: Alasdair G Kergon <agk@redhat.com>
2010-06-28 20:31:38 +00:00
Dave Wysochanski
322c5868b3 Add location independent flag and functions to ignore mdas.
First we add a 'flags' field to the location independent
metadata_area structure, and a MDA_IGNORE flag.  The
mda_is_ignored and mda_set_ignored functions are added to
manage the flag.  Adding the flag and functions gives a
library interface to ignore metadata areas independent of
the underlying location (disk, file, etc).  The location
specific read/write functions must then handle the specifics
of what this flag means to the location.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Reviewed-by: Alasdair G Kergon <agk@redhat.com>
2010-06-28 20:30:14 +00:00
Petr Rockai
d345bf2cd3 Account for mirror transient status when doing lvconvert --repair. 2010-05-24 15:32:20 +00:00
Zdenek Kabelac
651cae3c5c Replicator: check replicator segment
Check for possible problems within replicator structures.
Used also by vg_validate.
2010-05-21 12:43:02 +00:00
Dave Wysochanski
8cfd64de78 Add del_pvl_from_vgs() and move prototypes into metadata-exported.h
Add a delete function to manage the vg->pvs list.

NOTE: It may be possible to do further cleanup to these add/del functions
by passing a 'pv' as input instead of 'pv_list'.  The pv_list is used for
functions which do allocations (lvcreate) while other places in the code
just manage a list of 'pv' (e.g. import functions, vgextend, etc).

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
2010-04-13 17:25:44 +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
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
Dave Wysochanski
ed3329eb45 Fix off by 512 sizes for lvm2app.
Internally we store sizes in sectors, but lvm2app exports sizes
in bytes.  We could get fancier and allow units configuration but
this fix should do for now.

Fixes rhbz561422.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
2010-02-14 03:21:06 +00:00
Alasdair Kergon
d557773841 Consolidate LV allocation into alloc_lv(). 2009-09-28 17:46:15 +00:00
Mike Snitzer
04b2a4bdcf Add --dataalignmentoffset to pvcreate to shift start of aligned data area
Adds pe_align_offset to 'struct physical_volume'; is initialized with
set_pe_align_offset().  After pe_start is established pe_align_offset is
added to it.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2009-07-30 17:45:28 +00:00
Alasdair Kergon
9e813cc93b Remove pv_t, vg_t & lv_t handles from lib. Only liblvm uses them.
Rename lvm.h to lvm2app.h for now.
2009-07-29 13:26:01 +00:00
Milan Broz
c1fdeec999 Fix readahead calculation problems.
During vgreduce is failed mirror image replaced with error segment,
this segmant type has always area_count == 0.
Current code expects that there is at least one area with device,
patch fixes it by additional check (fixes segfault during vgreduce).

Also do not calculate readahead in every lv_info call, we only need
to cache PV readahead before activation calls which locks memory.
2009-06-01 12:43:31 +00:00
Milan Broz
d396100278 Use readahead of underlying device and not default (smaller) one.
When we are stacking LV over device, which has for some reason
increased read_ahead (e.g. MD RAID), the read_ahead hint
for libdevmapper is wrong (it is zero).

If the calculated read_ahead hint is zero, patch uses read_ahead of underlying device
(if first segment is PV) when setting DM_READ_AHEAD_MINIMUM_FLAG.

Because we are using dev-cache, it also store this value to cache for future use
(if several LVs are over one PV, BLKRAGET is called only once for underlying device.)

This should fix all the reamining problems with readahead mismatch reported
for DM over MD configurations (and similar cases).
2009-05-20 11:09:49 +00:00
Milan Broz
afd9ba98c1 Merge lv_is_displayable and lv_is_visible.
Displayable and visible is the same thing.

volumes_count(vg) is now vg_visible_lvs() and always
returns number of LVs from user perspective.
2009-05-13 21:27:43 +00:00
Milan Broz
2f9a9d1a7f Remove snapshot_count from VG and use function instead. 2009-05-12 19:12:09 +00:00
Alasdair Kergon
87f42fda5e Add sparse devices: lvcreate -s --virtualoriginsize (hidden zero origin).
Add lvs origin_size field.
Fix linux configure --enable-debug to exclude -O2.

Still a few rough edges, but hopefully usable now:
  lvcreate -s vg1 -L 100M --virtualoriginsize 1T
2009-04-25 01:17:59 +00:00
Milan Broz
8e1d5615b4 Introduce memory pool per volume group.
Since now, all code reading volume group is responsible for releasing
the memory allocated by calling vg_release(vg).
(For simplicity of use, vg_releae can be called for vg == NULL,
the same logic like free(NULL)).

Also providing simple macro for unlocking & releasing in one step,
tools usualy uses this approach.

The global memory pool (cmd->mem) should be used only for global
physical volume operations.

This patch have to be applied with all subsequent patches to complete
memory pool per vg logic.

Using separate memory pool has quite bit memory saving impact when
using large VGs, this is mainly needed when we have to use
preallocated and locked memory (and should not overflow from that
memory space).
2009-04-10 09:59:18 +00:00
Milan Broz
7b1c853bd9 Try to avoid full rescan if label scan is enough. 2009-02-25 23:29:06 +00:00
Alasdair Kergon
8929ce6651 Add --dataalignment to pvcreate to specify alignment of data area. (mbroz)
This patch is not fully tested and leaves some related bugs unfixed.

Intended behaviour of the code now:

  pe_start in the lvm2 format PV label header is set only by pvcreate (or
vgconvert -M2) and then preserved in *all* operations thereafter.

  In some specialist cases, after the PV is added to a VG, the pe_start
field in the VG metadata may hold a different value and if so, it
overrides the other one for as long as the PV is in such a VG.

  Currently, the field storing the size of the data area in the PV label
header always holds 0.  As it only has meaning in the context of a
volume group, it is calculated whenever the PV is added to a VG (and can
be derived from extent_size and pe_count in the VG metadata).
2009-02-22 19:00:26 +00:00
Alasdair Kergon
8544a8a254 Rename vg_read() to vg_read_internal(). (mornfall) 2009-01-26 19:01:32 +00:00
Dave Wysochanski
e9f57f2beb Add pv_mda_size to 'pvs' and vg_mda_size to 'vgs'.
Reports the size of the smallest metadata area in a PV or a VG.
Useful to confirm pvcreate --metadatasize or pvmetadatasize setting in
/etc/lvm/lvm.conf file.

NOTE: Actual value in these fields will most always differ from that
given in pvcreate options due to rounding and alignment effects.
2009-01-09 22:44:33 +00:00
Milan Broz
6d1b3b5385 Calculate mirror log size instead of hardcoding 1 extent size.
It fails for 1k PE now.

Patch adds log_region_size into allocation habdle struct
and use it in _alloc_parallel_area() for proper log size calculation
instead of hardcoded 1 extent - which can fail.

Reproducer for incorrect log size calculation:
        DEV=/dev/sd[bcd]

        pvcreate $DEV
        vgcreate -s 1k vg_test $DEV
        lvcreate -m1 -L 12M -n mirr vg_test

https://bugzilla.redhat.com/show_bug.cgi?id=477040

The log size calculation is mostly copied from kernel code.
2008-12-19 15:24:52 +00:00
Peter Rajnoha
b47952641a Added displayable_lvs_in_vg and lv_is_displayable functions to deal with
the counts of visible LVs from user's perspective consistently throughout
the code.
2008-12-04 15:54:26 +00:00
Alasdair Kergon
2c44337bd5 Right, a simple build (without options) is working again. 2008-11-03 22:14:30 +00:00
Milan Broz
affecdc5fc Try to fix possible infinite loop in dependency tree walking (by mornfall). 2008-09-25 15:57:02 +00:00
Alasdair Kergon
8c5bcdabab Improve the way VGs with PVs missing are handled so manual intervention
is required in fewer circumstances.  (mornfall)
2008-09-19 06:42:00 +00:00
Alasdair Kergon
a77f5bf258 Pass struct physical_volume to pe_align. 2008-09-19 04:28:58 +00:00
Alasdair Kergon
6e210a6c54 Cache VG metadata internally while VG lock is held. 2008-04-01 22:40:13 +00:00
Dave Wysochanski
9332d2cb9d Add find_lv_in_lv_list() and find_pv_in_pv_list().
Update _add_pvs() to call find_pv_in_pv_list().
2008-03-28 19:08:23 +00:00
Alasdair Kergon
7284f3f966 preparation for vg cache 2008-03-17 16:51:31 +00:00
Alasdair Kergon
72baf0c345 Maintain lists of stacked LV segments using each LV. 2008-01-16 19:00:59 +00:00
Alasdair Kergon
31e9db2690 stacked mirror support (incomplete) 2007-12-20 18:55:46 +00:00
Alasdair Kergon
a69ab65278 Major restructuring of pvmove and lvconvert layer manipulation code 2007-12-20 15:42:55 +00:00
Alasdair Kergon
00a7c302ea Add pv_mda_free and vg_mda_free fields to reports for raw text format. 2007-11-05 17:17:55 +00:00
Bryn M. Reeves
8b98c12815 Add is_orphan_vg() and change all hardcoded checks to use it. 2007-11-02 13:06:42 +00:00
Dave Wysochanski
70d9f98ed3 Accessor functions for PV will not modify the given PV.
So we can add 'const' to it.
Patch by Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
2007-10-12 14:08:10 +00:00
Alasdair Kergon
be6845999b Fix inconsistent licence notices: executables are GPLv2; libraries LGPLv2.1. 2007-08-20 20:55:30 +00:00
Alasdair Kergon
03eee0e2ed Split metadata-external.h out from metadata.h for the tools to use. 2007-07-18 15:38:58 +00:00
Dave Wysochanski
33e5601937 Change pv_read_path to pv_by_path 2007-07-12 15:38:53 +00:00
Dave Wysochanski
0c795e2e18 Turn _add_pv_to_vg() into external library function add_pv_to_vg() 2007-07-12 05:04:42 +00:00
Dave Wysochanski
c254039677 Add pv_read_path, a proposed external LVM library function to take a device path and return a PV handle 2007-07-11 23:33:12 +00:00
Dave Wysochanski
d6b1de30fe Convert vg->status checks to use vg_check_status function.\nRename status_flags to status in vg_check_status. 2007-06-19 04:36:12 +00:00
Dave Wysochanski
69483a8aaf Add vg_status function and clean up vg->status in tools directory 2007-06-19 04:23:32 +00:00