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Commit Graph

300 Commits

Author SHA1 Message Date
Zdenek Kabelac
6d6c233768 cleanup: move towards using direct LV pointers
We do not won't to 'expose'  internals of VG struct.
ATM we use lists to keep all LVs - we may want to switch
to better struct for quicker 'search'.

Since we do not need 'lists' but always actual LV,
switch find_lv_in_vg_by_lvid() to return LV,
and replaces some use case of  find_lv_in_vg()
with 'better' working find_lv() which already
returns LV.
2015-11-23 23:42:59 +01:00
Zdenek Kabelac
622064f00f thin: check for overprovisioning 2015-07-03 16:13:14 +02:00
Petr Rockai
c78b6f18d4 metadata: Reject lvmetad metadata extensions when reading from disk. 2015-06-10 16:25:57 +02:00
Alasdair G Kergon
6407d184d1 cache: Store metadata size and checksum.
Refactor the recent metadata-reading optimisation patches.

Remove the recently-added cache fields from struct labeller
and struct format_instance.

Instead, introduce struct lvmcache_vgsummary to wrap the VG information
that lvmcache holds and add the metadata size and checksum to it.

Allow this VG summary information to be looked up by metadata size +
checksum.  Adjust the debug log messages to make it clear when this
shortcut has been successful.

(This changes the optimisation slightly, and might be extendable
further.)

Add struct cached_vg_fmtdata to format-specific vg_read calls to
preserve state alongside the VG across separate calls and indicate
if the details supplied match, avoiding the need to read and
process the VG metadata again.
2015-03-18 23:43:02 +00:00
Zdenek Kabelac
2055b04c11 cleanup: indent tabs 2015-01-30 12:33:52 +01:00
Zdenek Kabelac
2e35c68122 lv_manip: add for_each_sub_lv_except_pools()
for_each_sub_lv() now scans in depth also pools, however for
rename we actually do want to skip pools.

So add a new for_each_sub_lv_except_pools() to be used by rename,
every other user of for_each_sub_lv() scans every sub LV with pools
included.

This is i.e. necessary for properly working preload of pools
that are using raid arrays.
2015-01-30 12:33:52 +01:00
Zdenek Kabelac
6116b1d6e3 thin: validate unused thin pool
Function tests, that given new thin pool is still unused.
2014-11-04 15:28:00 +01:00
Alasdair G Kergon
5e6e2d6b1b vgcreate: Permit non-power-of-2 extent sizes.
Relax validation to permit extent sizes > 128KB that are not powers of 2
with lvm2 format.  Existing code was already capable of handling this.
2014-10-14 18:12:15 +01:00
Alasdair G Kergon
ab2dacf6f6 lvconvert: Further restrictions on cache/pools.
Would be better to define what is supported not what isn't, but this'll
have to do for now.
2014-09-17 23:00:41 +01:00
Alasdair G Kergon
b4f5be76a3 cleanup: Remove metadata.h from tools dir.
metadata.h is meant to be internal to the library.
metadata-exported.h contains the things needed by tools.
2014-09-17 15:50:24 +01:00
Alasdair G Kergon
137ed3081a report: Add lv_parent field.
Only defined for thin/cache/raid/mirror at this stage as it
relies on get_only_segment_using_this_lv().
2014-07-03 23:49:34 +01:00
Petr Rockai
dba6dec661 metadata: Make it possible to write partial VGs obtained from lvmetad. 2014-06-08 17:41:11 +02:00
Zdenek Kabelac
356fdda46d lv_manip: drop cmd pointer from for_each_sub_lv
Drop unused passed cmd pointer from function.

TODO:

We have two similar functions (though not identical)

lv_manip.c: for_each_sub_lv()
metadata.c: _lv_each_dependency()

They seem to not always match - we should probably convert
to use only a single function.
2014-03-27 13:10:13 +01:00
Alasdair G Kergon
4aa8a14fc2 compilation: Rename tags variables to tagsl. 2014-01-30 21:09:28 +00:00
Peter Rajnoha
32080c4ff7 device: add physical block size info and make sure VG extent size >= PV's phys. block size 2013-12-12 15:02:36 +01:00
Zdenek Kabelac
e286904da6 thin: snapshot merge support 2013-12-04 14:30:25 +01:00
Petr Rockai
0decd7553a metadata: Fix metadata repair paths when lvmetad is used. 2013-10-09 14:44:01 +02:00
Alasdair G Kergon
84801d7c34 thin: rename extend_pool to create_pool 2013-07-23 13:33:14 +01:00
Alasdair G Kergon
f56a1819e9 tools: remove metadata-exported.h
metadata-exported.h is included by tools.h
2013-07-09 03:07:55 +01:00
Alasdair G Kergon
9d5bdc91ca tools: remove metadata.h 2013-07-09 02:51:24 +01:00
Alasdair G Kergon
8adddbf101 pvcreate: remove metadata.h header
Files in tools/ should only use metadata-exported.h not metadata.h.
Rename pvcreate_locked to pvcreate_single.
2013-07-09 02:37:56 +01:00
Tony Asleson
6d6ccded35 lib2app: Added PV create. V2
V2: Correct call to lock_vol

Signed-off-by: Tony Asleson <tasleson@redhat.com>
2013-07-02 14:24:34 -05:00
Tony Asleson
e33ac7b1ed lvm2app: Implement lvm_pv_remove V2
Code move and changes to support calling code from
command line and from library interface.

V2 Change lock_vol call

Signed-off-by: Tony Asleson <tasleson@redhat.com>
2013-07-02 14:24:34 -05:00
Petr Rockai
c1e851e208 Move export_vg_to_config_tree alongside export_vg_to_buffer. 2013-06-10 15:55:55 +02:00
Petr Rockai
382fc878d7 lvmetad: Check for reappeared PVs. 2013-04-03 12:48:28 +02:00
Peter Rajnoha
ea36d0501e cleanup: remove unused 'pv_by_path' fn
The pv_by_path might be also dangerous to use as it does not
count with any other metadata areas but the ones found on the PV
itself. If metadata was not found on the PV referenced by the path,
it returned no PV though it might have been referenced by metadata
elsewhere (on other PVs...).
2013-03-19 14:57:36 +01:00
Peter Rajnoha
6d8de3638c cleanup: use struct pvcreate_restorable_params throughout 2013-02-26 11:25:11 +01:00
Zdenek Kabelac
87331dc419 thin: add support for external origin
Add internal support for thin volume's external origin.
2013-02-23 10:36:58 +01:00
Zdenek Kabelac
7910b6c0ba thin: update pool_is_active
Change it to take LV and move it to exported header - seems
to be a better fit for usability from tools/ directory.
2013-02-05 16:54:11 +01:00
Zdenek Kabelac
11eaf1c98c thin: add function pool_is_active
This internal function check for active pool device.
For cluster it checks every thin volume,
On the non-clustered VG we need to check just
for presence of -tpool device.
2013-02-05 14:35:44 +01:00
Zdenek Kabelac
6987a353de thin: add detach_pool_metadata_lv
Add internal function detach_pool_metadata_lv().
2012-12-02 17:56:29 +01:00
Petr Rockai
2276379a71 lib/cache/lvmetad: Refactor to use dm_config_tree in requests.
We were using daemon_send_simple until now, but it is no longer adequate, since
we need to manipulate requests in a generic way (adding a validity token to each
request), and the tree-based request interface is much more suitable for this.
2012-09-26 14:49:15 +02:00
Alasdair Kergon
5b613cff97 Pass 'single_device' parameter down to suppress 'Can't find uuid' messages
when reading VG text metadate and called from pvscan --lvmetad.

(Longer-term, that check needs moving outside of that code.)
2012-02-29 02:35:35 +00:00
Petr Rockai
dae0822698 The lvmetad client-side integration. Only active when use_lvmetad = 1 is set in
lvm.conf *and* lvmetad is running.
2012-02-23 13:11:07 +00:00
Zdenek Kabelac
a7e2da0585 Thin add pool_below_threshold
Test both data and metadata percent usage.
2012-02-08 13:05:38 +00:00
Zdenek Kabelac
d55aa53816 Thin fix transaction_id incrementation and code refactoring
Add pool_has_message and use it in attach_pool_message.
Also update header to make more obvious which segment type is
expected as parameter.
Rename  'read_only' to  'no_update' (no auto update transaction_id)
to better fit how it's used.
Fix problem when there was only one stacked message replaced with delete
message that caused unwanted transaction_id increase.
2012-01-25 08:55:19 +00:00
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