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Commit Graph

3771 Commits

Author SHA1 Message Date
Zdenek Kabelac
c1ae39e2ef cleanup: update comments
Fix cut&paste comments
2014-04-08 11:00:16 +02:00
Zdenek Kabelac
d4d8060ff4 cleanup: do include lvm headers in libdm build
Relocate some defines from lvm headers to those
few shared between libdm and lib code.
2014-04-08 11:00:15 +02:00
Zdenek Kabelac
5553a099d1 cleanup: use DM_ARRAY_SIZE
More use of libdevmapper macro
2014-04-08 11:00:15 +02:00
Zdenek Kabelac
56175f6ba9 cleanup: refactor apply_lvname_restrictions
Split apply_lvname_restrictions into 2 internal
function:

_lvname_has_reserved_prefix()
_lvname_has_reserved_string()
2014-04-08 11:00:15 +02:00
Zdenek Kabelac
9eab84aa2b debug: catch invalid request for tree
In general for non-toplevel LVs we shouldn't allow any _tree_action.
For now error on request for cache_pool activation which
doesn't even exist in dm-table.
2014-04-08 11:00:15 +02:00
Zdenek Kabelac
2868d897da lvm-string: add cdata/cmeta as reserved name 2014-04-08 11:00:14 +02:00
Zdenek Kabelac
700b4bfc94 log: skip repeated hashing when logging once
When a message is already found in the hash, no need to hash it again.
2014-04-08 11:00:14 +02:00
Zdenek Kabelac
96cf9dc017 raid: use internal variables for array alloc
Don't use passed pointer when allocating policies' array.
(In case policy_argc would be NULL, this would have caused
NULL dereference).
2014-04-08 11:00:13 +02:00
Zdenek Kabelac
89615af349 exec_cmd: skip fork when argv[0] is null
Skip whole fork code path if the arg would be null.
2014-04-08 11:00:13 +02:00
Alasdair G Kergon
4d0c3ed0f8 configure: regenerate
Used rhel7 autoreconf.
2014-04-04 02:36:47 +01:00
Alasdair G Kergon
5d7614fcf9 format_text: Report failed close. 2014-04-04 02:28:10 +01:00
Alasdair G Kergon
cc72f340d7 thin: Support thin_check --clear-needs-check-flag.
Update thin provisioning tools to version 0.3.2 or later!
2014-04-04 02:22:40 +01:00
Alasdair G Kergon
b38a3d8c85 lvmetad: Update retry logic vars and comments.
Avoid using variables with same name as functions.
Use lvm_even_rand for random numbers.
2014-04-04 01:46:53 +01:00
Alasdair G Kergon
3f0f558786 dev-cache: Improve open device check messages. 2014-04-04 01:39:42 +01:00
Alasdair G Kergon
12ddaa5f10 lib: Share lvm_even_rand for random numbers. 2014-04-04 01:26:19 +01:00
Jonathan Brassow
6c6468f91d RAID: Improve an error message
When down-converting a RAID1 LV, if the user specifies too few devices,
they will get a confusing message.
Ex:
[root]# lvcreate -m 2 --type raid1 -n raid -L 500M taft
  Logical volume "raid" created

[root]# lvconvert -m 0 taft/raid /dev/sdd1
  Unable to extract enough images to satisfy request
  Failed to extract images from taft/raid

This patch makes the error message a bit clearer by telling the user
the count they are trying to remove and the number of devices they
supplied.

[root@bp-01 lvm2]# lvcreate --type raid1 -m 3 -L 200M -n lv vg
  Logical volume "lv" created

[root@bp-01 lvm2]# lvconvert -m -3 vg/lv /dev/sdb1
  Unable to remove 3 images:  Only 1 device given.
  Failed to extract images from vg/lv

[root@bp-01 lvm2]# lvconvert -m -3 vg/lv /dev/sd[bc]1
  Unable to remove 3 images:  Only 2 devices given.
  Failed to extract images from vg/lv

[root@bp-01 lvm2]# lvconvert -m -3 vg/lv /dev/sd[bcd]1
[root@bp-01 lvm2]# lvs -a -o name,attr,devices vg
  LV   Attr       Devices
  lv   -wi-a----- /dev/sde1(1)

This patch doesn't work in all cases.  The user can specify the right
number of devices, but not a sufficient amount of devices from the LV.
This will produce the old error message:
[root@bp-01 lvm2]# lvconvert -m -3 vg/lv /dev/sd[bcf]1
  Unable to extract enough images to satisfy request
  Failed to extract images from vg/lv
However, I think this error message is sufficient for this case.
2014-04-03 16:57:41 -05:00
Zdenek Kabelac
c2876ee1c9 cache: enforce local exlusive activation
For cache flushing local exlusive activation is needed.
2014-04-01 21:29:28 +02:00
Zdenek Kabelac
dc5a3c9964 debug: add internal error for passed LV
TODO: in fact we should parameter LV.
2014-04-01 20:54:09 +02:00
Zdenek Kabelac
9cb053339e cleanup: cache updates messages
Passing non cached device is an internal error.
Print messages at non-error level.
Shorten sleep delay for cache flush.
2014-04-01 20:54:09 +02:00
Zdenek Kabelac
e2ea3cd7ba cleanup: cache use const char policy
Policy should be const char pointer.
2014-04-01 20:54:09 +02:00
Zdenek Kabelac
d58cc2c0fc cleanup: cache reuse code for pool test
Using same error message for pool associated devices.
2014-04-01 20:18:05 +02:00
Zdenek Kabelac
e72dea55bf cache: fix order of metadata change
Start to change metadata after they are archived.
And since cache_pool is virtual skip deactivation
call for this LV.
2014-04-01 20:17:10 +02:00
Zdenek Kabelac
d3004479cc cache: use remove_layer_from_lv
Since the usability problem were fixed, we can use this function.
Cleanup orphan LVs with TEMPORARY flags
(reduces couple blkid error reports, but couple of them
is still left...)
2014-04-01 20:17:10 +02:00
Zdenek Kabelac
0a15a210a5 cache: cache segment is non-discardable
Since cache segment is purely virtual mapping, it has nothing for
discard. Discardable is cache origin here which is now
properly removed on 'delete' phase.

Plain lv_empty() call needs to only detach cache origin and leave
origin unchanged.
2014-04-01 20:17:10 +02:00
Zdenek Kabelac
a018c57f0b cache: never activate cache pool
Since cache-pool is purely lvm abstraction layer LV, it never
need any device node, so do not add even 'error' device for it.
2014-04-01 20:17:10 +02:00
Petr Rockai
d5682ccbac lvm-wrappers: Remove spurious #include <libudev.h>. 2014-04-01 15:26:26 +02:00
Peter Rajnoha
68bb639a08 config: fix compile error in config-settings.h if using --disable-dmeventd
config/config_settings.h:257:102: error: 'DMEVENTD_PATH' undeclared here (not in a function)
2014-03-31 15:57:42 +02:00
Zdenek Kabelac
84beba5d7f vg_validate: check size of lv_name + vg_name
Since the whole dm device name may not exceed 127 characters,
validate no LV names is bigger then this limit.
2014-03-31 12:05:32 +02:00
Zdenek Kabelac
6570d36ad5 lv_rename: resume fail is certainly error
Failing resume path means command has failed,
even when commit was ok.
2014-03-31 12:03:25 +02:00
Zdenek Kabelac
c7a89323f5 fix spurios char
Mistyped char left in code.
2014-03-27 13:49:24 +01:00
Zdenek Kabelac
fc8185601d cleanup: indent change 2014-03-27 13:13:09 +01:00
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
Zdenek Kabelac
22579b4451 lv_rename: validate renamed sublv
Use proper vgmem memory pool for allocation of LV name in the vg
and check if new renamed LV is a valid name.

TODO: validation should really use also VG name, othewise we are not
able to tell "vgname-lvname" will be valid.
2014-03-27 13:06:23 +01:00
Zdenek Kabelac
2a93eba68e cleanup: easier casting
Use 32bit for extent calcs.
Drop uneeded implicit case.
2014-03-26 14:11:37 +01:00
Zdenek Kabelac
0499e87ace cleanup: simplify pv name size estimation
Reuse buffer with size of 2 * PATH_MAX to handle worst case escape
and avoid extra calculation of espaced len.
2014-03-26 14:11:37 +01:00
Petr Rockai
a3615f3149 lvmetad: Fix an endless wait loop introduced in c13f5dbb. 2014-03-26 11:45:28 +01:00
Petr Rockai
c13f5dbb25 lvmetad: Wait at least 80s for the initial scan. 2014-03-25 16:38:35 +01:00
Zdenek Kabelac
65bbfdf74d lvmetad: add missing dev_close in error path
Fixes missing dev_close() in dev_read error path
introduced in commit
a368698672
3e5bec37e9

(in-release fix)
2014-03-25 14:55:58 +01:00
Zdenek Kabelac
13258d6e96 debug: add proper backtrace debug
When failure happens inside refresh, print proper debug backtrace.
2014-03-25 11:22:59 +01:00
Zdenek Kabelac
89575d6895 cleanup: drop init of already zalloced mem 2014-03-25 11:22:59 +01:00
Zdenek Kabelac
406ec4162f cleanup: use dm_free without extra test
It's ok to free(NULL).
2014-03-25 11:22:59 +01:00
Zdenek Kabelac
4a6f05e420 cleanup: use trigraph 2014-03-25 11:22:58 +01:00
Zdenek Kabelac
68d13b2517 dev-cache: fix mem corruption on refresh context
When lvm2 command works with clvmd and uses locking in wrong way,
it may 'leak' certain file descriptors in opened (incorrect) state.

dev_cache_exit then destroys memory pool of cached devices, while
_open_devices list in dev-io.c was still referencing them if they
were still opened.

Patch properly calls _close() function to 'self-heal' from this
invalid state, but it will report internal error (so execution
with abort_on_internal_error causes immediate death). On the
normal 'execution', error is only reported, but memory state is
corrected, and linked list is not referencing devices from
released mempool.

For crash see: https://bugzilla.redhat.com/show_bug.cgi?id=1073886
2014-03-25 11:22:57 +01:00
Peter Rajnoha
9446978e64 config: define default value for global/thin_disabled_features as NULL instead
Before:
  thin_disabled_features = ""
Now:
  thin_disabled_features = []

Which is a more correct and consistent way of specifying void array
though parses can handle both forms.
2014-03-24 16:31:27 +01:00
Peter Rajnoha
4e47c34ffc config: also check empty arrays for difference against default values 2014-03-24 16:30:47 +01:00
Peter Rajnoha
5dcec1734e dumpconfig: add dumpconfig --type diff to show differences from defaults 2014-03-24 15:35:54 +01:00
Peter Rajnoha
76ff38fa5c config: add support for comparing used config values with default ones 2014-03-24 15:35:47 +01:00
Peter Rajnoha
630e0af14e cleanup: move _get_def_array_values fn
So we can use reuse it for the code that will follow...
2014-03-24 15:20:19 +01:00
Zdenek Kabelac
c595b20e56 dev-swap: use SECTOR_SHIFT 2014-03-22 20:43:05 +01:00
Zdenek Kabelac
936bfeb8de dev-swap: detect swap signature on devices smaller then 2MB
Smallest supported size for swap device is 40KB, however current
test skipped devices smaller then 4096 sectors (2MB).

Since page is in bytes, convert it to sectors before comparing
with device size (in sectors).
2014-03-22 20:36:14 +01:00
Zdenek Kabelac
1ee8688de0 cleanup: memlock line indent 2014-03-21 22:29:25 +01:00
Zdenek Kabelac
486b15d36c memlock: drop locked mem in critical section
When daemon releases memory and it is still in critical
section, issue an error message and drop memory.

We cannot do anything better for now and we at least
release allocated resource.

FIXME:

This code is triggered when i.e. clvmd is killed while
some LVs are suspend - in this case suspended devices leak,
so if this happens during i.e. clvmd upgrade we have
unresolved problem - even locked rootfs...
2014-03-21 22:29:22 +01:00
Zdenek Kabelac
0ca16c6946 activate: report release with critical section
This function is typically called for cmd context refresh or destroy.
On the non-clustered case we already unlocked all messages,
however when i.e. 'clvmd' gets break signal it may have
still couple messages queued.

For now just report an error.
2014-03-21 22:29:22 +01:00
Zdenek Kabelac
e5382c063d lvmcache: fix debug trace
Recent debug tracing commit introduce read of uninitialized memory,
since VGID is not really a proper string which ends with '\0'.
Enforce at most 32 (ID_LEN) chars are read from vgid.
(in release fix)
2014-03-21 22:29:22 +01:00
Zdenek Kabelac
fc280bcc42 lvmcache: handle reinit without error
Since commit f12ee43f2e call destroy,
it start to check all VGs are unlocked. However when we become_daemon,
we simply reset locking (since lock is still kept by parent process).
So implement a simple 'reset' flag.
2014-03-21 22:29:21 +01:00
Peter Rajnoha
000e81a999 cleanup: add cmd_context reference to struct cft_check_handle
So we have all things needed to do a configuration check packaged
in one handle. It makes function calls inside a bit more readable.
2014-03-19 08:45:05 +01:00
Zdenek Kabelac
b6eb2ac10a cleanup: indent 2014-03-19 00:58:02 +01:00
Zdenek Kabelac
caf93eb1cb cleanup: simplify pv name print
pv_vg_name() now already hides orphans.
2014-03-19 00:58:01 +01:00
Zdenek Kabelac
506091be70 pv_vg_name: do not expose internal orphans to lvm2 users
Check for orphan VG name and return just empty string,
Use internally pv->vg_name if the real orphan name is needed.
2014-03-19 00:57:59 +01:00
Zdenek Kabelac
013f5f4550 metadata: print VG with invalid chars in quotes
We we report invalid chars, put quotes around vg name.
2014-03-19 00:48:39 +01:00
Zdenek Kabelac
6a8d3d7811 clvmd: avoid resending local sync commands
Instead of sending repeatedly  LOCAL_SYNC commands to clvmds
like 'lvs', rememeber the last sent commmand, and if there was no other
clvmd command, drop this redundant SYNC call message.

The problem has started with commit:
56cab8cc03

This introduced correct synchronisation of name, when user requests to know
open_count (needs to wait for udev), however it is also executed for
read-only cases like 'lvs' command.

For now implement very simple solution, which is only monitoring
outgoing clvmd command, and when sequence of LOCAL sync names are
recognized, they are skipped automatically.

TODO:
Future solution might move this variable info 'cmd_context' and
use  'needs_sync' flag also i.e. in file locking code.
2014-03-19 00:47:58 +01:00
Zdenek Kabelac
a6b159e99c file_locking: use PATH_MAX for dir name
Using just 128 chars for locking dir may wail if longer
dir entry is used, swich to default linux max path.
2014-03-19 00:46:28 +01:00
Zdenek Kabelac
08018a5345 archiver: drop unneeded backup check
When the backup is disabled, avoid testing backup presence.
This only leads to errors being logged in debug trace and the missing
backup can't be fixed, since it's disabled.
2014-03-19 00:45:41 +01:00
Zdenek Kabelac
599a05f658 lvmcache: add mode debug prints
Decorate NULL returns with debug_cache output so the
debug log doesn't contain spurios <bactrace> line without
any reason for it.

Add internal errors when cache is misused.
2014-03-18 10:28:08 +01:00
Peter Rajnoha
21b3c983fd config: make global/lvdisplay_shows_full_device_path profilable 2014-03-18 09:49:53 +01:00
Peter Rajnoha
927784cd06 config: make global/suffix profilable and add it to lvm.conf
The global/suffix was missing from example lvm.conf but it can
be very useful when using lvm in scripts and now in profiles as well
Let's expose it more.
2014-03-18 09:24:17 +01:00
Peter Rajnoha
c1ce2cc86c config: make global/units and global/si_unit_consistency profilable 2014-03-17 16:07:29 +01:00
Zdenek Kabelac
3a82490ee1 snapshot: wrap min_chunk test into a lib function
Create a separate function to validation snapshot min chunk value
and relocate code into snapshot_manip file.

This function will be shared with lvconvert then.
2014-03-17 14:31:43 +01:00
Peter Rajnoha
455f23586f config: make report settings profilable
Users can create several profiles for how the tools report
the output very easily and then just use

  <lvm reporting command> --profile <report_profile_name>
2014-03-17 14:27:49 +01:00
Peter Rajnoha
ada47c164a autoactivation: use VG read lock
The activation (including the refresh) should take the VG read lock
like the usual activation/refresh.
2014-03-14 12:10:52 +01:00
Peter Rajnoha
ca880a4f13 autoactivation: issue a VG refresh before autoactivation only if 'change' lvmetad flag is set
This prevents numerous VG refreshes on each "pvscan --cache -aay" call
if the VG is found complete. We need to issue the refresh only if the PV:
  - is new
  - was gone before and now it reappears (device "unplug/plug back" scenario)
  - the metadata has changed
2014-03-14 10:48:56 +01:00
Zdenek Kabelac
c0f1eb5f0f dev_manager: check prohibited devices earlier
Reorder detection for internal device - since this test
is much simpler then target analysis, check it sooner.

Replace test for '68' with sizeof & ID_LEN

Add FIXME about device alias problem with is_reserved_lvname,
since this test fails on devices like /dev/dm-X
so we need to convert tests to UUID.
2014-03-12 19:38:34 +01:00
Zdenek Kabelac
b50b4471bd cleanup: drop unused define 2014-03-12 19:12:34 +01:00
Peter Rajnoha
bf42119b22 config: accept empty values for global/thin_disabled_features
Let's do this the other way round - this makes more logic than commit b995f06.
So let's allow empty values for global/thin_disabled_features where
such an empty value now means "none of this features are disabled".
2014-03-12 15:53:20 +01:00
Peter Rajnoha
b995f06abf config: mark global/thin_disabled_features as having no default value
The global/thin_disabled_features should be marked as having no default
value. Otherwise the output from 'lvm dumpconfig --type default' would
have 'thin_disabled_features=""' which will produce an error message
'Ignoring empty string in config file ...' if such output is feed
back to lvm.
2014-03-12 15:17:52 +01:00
Zdenek Kabelac
4cc5c689b8 thin: add pool uuid suffix for pool volume
Even though we make pool volume as a public visible LV,
we still do not want tools to look at this volume.

While we do not create /dev/vg/lv link, device is still
accessible via /dev/mapper/vg-lv and there is no easy
way to recognize it's private without lvm2 metadata.

Enhance UUID with -pool suffix and directly skip
any LV with a suffix in  device_is_usable() call.

TODO: enhance other targets with this logic.
blkid may probably use same simple logic.
2014-03-12 00:16:27 +01:00
Zdenek Kabelac
8a60cbcf45 thin: always activate and deactive pool when creating
When we create thin-pool we have used trick to keep
volume active, but since we now support TEMPORARY flag,
we could just localy active & deactive metadata LV,
and let the thinpool through normal activation process.
2014-03-12 00:16:27 +01:00
Zdenek Kabelac
6a0d97a65c lvm: change build_dm_uuid API
Pass directly 'lv' into this build routine,
so we can eventually add more private UUID suffixes.
2014-03-12 00:16:20 +01:00
Zdenek Kabelac
4d64e91efd thin: do not check of empty pool with messages
The empty pool is also the pool which has yet queued list of messages
and transaction_id == 1.

Problem is exposed when pool is created inactive.

lvcreate -L10 -T vg/pool -an
lvcreate -V10 -T vg/pool
2014-03-12 00:15:22 +01:00
Zdenek Kabelac
1850a6e454 thin: fix pool_has_message return for NULL params
When pool_has_message() is queried with NULL lv and 0 device_id
it should just return 'true' when there is any message queued.
So it needs to return negative value dm_list_empty().

Since there is no user for this code path in code currently,
this bug has not been triggered.
2014-03-12 00:13:21 +01:00
Peter Rajnoha
bfffccca94 config: keep config paths with variable names properly marked on output 2014-03-07 18:04:02 +01:00
Peter Rajnoha
eeff7729d9 config: use small local static buffer instead of mempool for temporary config path
We can't use mempool for temporary variable for configuration path inside
find_config_tree_* functions since these functions can use the mempool
themselves deeper in the code and we can free mempool chunks only from
top to bottom which is not the case here (some default string
configuration values can be allocated from the mempool).
2014-03-07 17:50:01 +01:00
Peter Rajnoha
7409009a20 cleanup: remove superfluous slash in default cache dir path 2014-03-07 13:03:09 +01:00
Zdenek Kabelac
7a595d7388 makefiles: use BLKID/UDEV_CFLAGS properly
blkid.h needs BLKID_CFLAGS
Do not add UDEV_CFLAGS everywhere and use it only when needed.
2014-03-06 17:30:06 +01:00
Peter Rajnoha
9a1d31a3c6 cleanup: remove superfluous forward declaration 2014-03-06 12:43:21 +01:00
Peter Rajnoha
74a3fc4e85 config: add default for allocation/cache_pool_chunk_size
The same as for allocation/thin_pool_chunk_size - the default value
used is just a starting point. The calculation continues using the
properties of the devices actually used.
2014-03-06 11:34:02 +01:00
Peter Rajnoha
d27868e94f config: runtime default for allocation/thin_pool_chunk_size
The allocation/thin_pool_chunk_size is a bit more complex. It's default
value is evaluated in runtime based on selected thin_pool_chunk_size_policy.
But the value is just a starting point. The calculation then continues
with dependency on the properties of the devices used. Which means for
such a default value, we know only the starting value.
2014-03-06 11:26:02 +01:00
Peter Rajnoha
932e75e89f config: separate cfg_def_default_value_hint out of cfg_def_get_default_value
If the config setting is defined as having no default value, but it's
still not NULL, it means such a value acts as a *hint* only
(e.g. a starting value from which the default value is calculated).

The new "cfg_def_get_default_value_hint" will always return the value
as defined in config_settings.h.

The original "cfg_def_get_default_value" will always return 0/NULL if
the config setting is defined with CFG_DEFAULT_UNDEFINED flag (hence
ignoring the hint).

This is needed for proper distiction between a correct default value
and the value which is just a hint or a starting point in calculation,
but it's not the final value (yes, we do have such settings!).
2014-03-06 11:18:19 +01:00
Peter Rajnoha
eecf191d3e config: runtime default for activation/mirror_image_fault_policy
The activation/mirror_image_fault_policy default value copies the
value (or default one) used for activation/mirror_device_fault_policy.
2014-03-06 11:16:23 +01:00
Peter Rajnoha
11039589d3 config: runtime default for config/profile_dir
The config/profile_dir default value takes LVM_SYSTEM_DIR into consideraton.
2014-03-06 11:16:04 +01:00
Peter Rajnoha
0da1e5d9f8 config: runtime default for backup/backup_dir, backup/archive_dir
The backup/backup_dir and backup/archive_dir default value is evaluated
in runtime and takes LVM_SYSTEM_DIR into consideration...
2014-03-06 11:15:21 +01:00
Peter Rajnoha
f6adef9825 config: runtime default for devices/cache, devices/cache_dir
The devices/cache and devices/cache_dir are evaluated in runtime this way:

  - if devices/cache is set, use it

  - if devices_cache/dir or devices/cache_file_prefix is set, make up a
    path out of that for devices/cache in runtime, taking into account
    the LVM_SYSTEM_DIR environment variable if set

  - otherwise make up the path out of default which is:
    <LVM_SYSTEM_DIR>/<cache_dir>/<cache_file_prefix>.cache

With the runtime defaults, we can encode this easily now. Also, the lvm
dumpconfig can show proper and exact information about this setting then
(the variant that shows default values).
2014-03-06 11:07:54 +01:00
Peter Rajnoha
b53ec37286 config: add CFG_DEFAULT_RUN_TIME for config options with runtime defaults
Previously, we declared a default value as undefined ("NULL") for
settings which require runtime context to be set first (e.g. settings
for paths that rely on SYSTEM_DIR environment variable or they depend
on any other setting in some way).

If we want to output default values as they are really used in runtime,
we should make it possible to define a default value as function which
is evaluated, not just providing a firm constant value as it was before.

This patch defines simple prototypes for such functions. Also, there's
new helper macros "cfg_runtime" and "cfg_array_runtime" - they provide
exactly the same functionality as the original "cfg" and "cfg_array"
macros when defining the configuration settings in config_settings.h,
but they don't set the constant default value. Instead, they automatically
link the configuration setting definition with one of these functions:

  typedef int (*t_fn_CFG_TYPE_BOOL) (struct cmd_context *cmd, struct profile *profile);
  typedef int (*t_fn_CFG_TYPE_INT) (struct cmd_context *cmd, struct profile *profile);
  typedef float (*t_fn_CFG_TYPE_FLOAT) (struct cmd_context *cmd, struct profile *profile);
  typedef const char* (*t_fn_CFG_TYPE_STRING) (struct cmd_context *cmd, struct profile *profile);
  typedef const char* (*t_fn_CFG_TYPE_ARRAY) (struct cmd_context *cmd, struct profile *profile);

(The new macros actually set the CFG_DEFAULT_RUNTIME flag properly and
set the default value link to the function accordingly).

Then such configuration setting requires a function of selected type to
be defined. This function has a predefined name:

  get_default_<id>

...where the <id> is the id of the setting as defined in
config_settings.h. For example "backup_archive_dir_CFG" if defined
as a setting with default value evaluated in runtime with "cfg_runtime"
will automatically have "get_default_backup_archive_dir_CFG" function
linked to this setting to get the default value.
2014-03-06 10:54:17 +01:00
Peter Rajnoha
e2870c94cf config: use mempool for config paths used in find_config_tree_* functions
Using mempool is much safer than using the global static variable.
The global variable would be rewritten on each find_config_tree_* call
and we need to be very careful not to get into this problem (we don't
do now, but we can with the patches for "runtime defaults" that will follow).
2014-03-06 10:50:47 +01:00
Peter Rajnoha
c5a4e60c11 config: fixup default values for selected config settings
These settings don't have any default value predefined:
  log/file
  log/activate_file
  global/library_dir

This settings has default value but not yet declared in config_settings.h:
  global/locking_library (default is DEFAULT_LOCKING_LIB)
2014-03-06 09:49:57 +01:00
Zdenek Kabelac
090e81281f lvmetad: more reuse precommit buffer
This patch moves more allocation to vg_write
(as started in 8c878438f5)
TODO: relocate also communication.
(in-release update)
2014-03-01 14:08:58 +01:00
Petr Rockai
fb003cdfd5 format-text: Fix a warning. 2014-02-28 16:23:16 +01:00
Petr Rockai
3e5bec37e9 format-text: Fix _raw_read_mda_header (missing close, open r/o). 2014-02-28 16:21:09 +01:00
Petr Rockai
a368698672 lvmetad: Hide corrupt MDAs from the cache.
This is probably not optimal, but makes the lvmetad case mimic non-lvmetad code
more closely. It also fixes vgremove of a partially corrupt VG with lvmetad, as
_vg_write_raw (and consequently, entire vg_write) currently panics when it
encounters a corrupt MDA. Ideally, we'd be able to explicitly control when it is
safe to ignore them.
2014-02-28 11:23:52 +01:00
Zdenek Kabelac
07ba047116 cleanup: relocate segment flags
Move flags for segments to segtype header where it seems more closely
related as the features are related to segtype and not activation.

Use unsigned #define - since it's more common in lvm2 source code
for bit flags.
2014-02-27 14:46:11 +01:00