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Commit Graph

845 Commits

Author SHA1 Message Date
Alasdair G Kergon
7c6526aae2 lvresize: separate validation from action
Start separating the validation from the action in the basic lvresize
code moved to the library.
Remove incorrect use of command line error codes from lvresize library
functions.  Move errors.h to tools directory to reinforce this,
exporting public versions of the error codes in lvm2cmd.h for dmeventd
plugins to use.
2013-07-06 03:28:21 +01:00
Peter Rajnoha
8769033e07 toolcontext: add a few comments for struct cmd_context and rename config_valid -> config_initialized
Just to make it more clear and also not to confuse
config_valid with check against config definition
(and its 'valid' flag within the config defintion tree).
2013-07-02 15:22:11 +02:00
Peter Rajnoha
50bf2c0db1 config: add profile arg to find_config_tree_int 2013-07-02 15:19:09 +02:00
Peter Rajnoha
06dd66af54 config: add profile arg to find_config_tree_str 2013-07-02 15:19:09 +02:00
Zdenek Kabelac
47419d21ac cleanup: stack usage
Shortening code with macros return_0, return_NULL.
Add some missing stack prints in error paths.
2013-07-01 23:11:14 +02:00
Zdenek Kabelac
2fb116e71e cleanup: more dmeventd code cleanup 2013-07-01 23:06:41 +02:00
Zdenek Kabelac
fd399d52a9 dmeventd: move code from signal handler
Instead of calling syslog() from signal event handler,
run all logging code in the main loop.

Also it needs to take the lock and check for list
only when really needed.
2013-07-01 23:06:11 +02:00
Zdenek Kabelac
9233e6d0bb dmeventd: fix cleanup commit
Fixing wrong rebase of cleanup commit.
Put back call to outth.
2013-06-25 23:05:06 +02:00
Zdenek Kabelac
01174b8b8b cleanup: reformat code of dmeventd 2013-06-25 13:47:39 +02:00
Zdenek Kabelac
5e19410d93 cleanup: use simplier structure initialization
And also use static struct for _out_spec.
2013-06-16 00:07:33 +02:00
Zdenek Kabelac
636c51ae3f cleanup: use unrelated temporary variables
use of tmp_rq2 is unrelated to tmp_rq - so use separate
variable.
2013-06-16 00:07:33 +02:00
Alasdair G Kergon
c2dc21d89f text: miscellaneous comments & message tweaks 2013-06-15 01:28:54 +01:00
Petr Rockai
7d644443e0 activation: Pass both ondisk and incore LV to suspend. 2013-06-10 17:26:38 +02:00
Petr Rockai
f65dd341a5 locking: Make it possible to pass down an LV to activation code.
Previously, we have relied on UUIDs alone, and on lvmcache to make getting a
"new copy" of VG metadata fast. If the code which triggers the activation has
the correct VG metadata at hand (the version which is currently on disk), it can
now hand it to the activation code directly.
2013-06-10 17:26:38 +02:00
Zdenek Kabelac
55f42944bd dmeventd: revert back percent to int
int is perfectly ok here.
2013-05-30 16:46:58 +02:00
Peter Rajnoha
6ad17fd712 dmeventd: always return success on dmevetnd -V 2013-05-29 12:54:42 +02:00
Zdenek Kabelac
e992cb253c dmeventd: use dm_get_status_snapshot()
Switch to use libdm dm_get_status_snapshot() function for
reading status info.
This fixes bug, where the code was using 32bit integers,
while the snapshot target is able to return 64bit sizes.
However this also means, someone is using >1TB snapshot
cow devices, which is actually very bad idea anyway, since the
perfomance and memory usage in this case is very bad.
2013-05-27 10:33:06 +02:00
Zdenek Kabelac
810bc4f8c1 dmeventd: use dm_mountinfo_read
Reuse mountinfo reading code from libdm.
2013-05-20 16:47:33 +02:00
Alasdair G Kergon
2fbe1e6e00 rephrasing: miscellaneous changes
Miscellaneous changes to messages, man pages, comments and WHATS_NEW.
2013-05-15 01:50:42 +01:00
Zdenek Kabelac
a5ad1ee858 dmeventd: return error if device is not found
Do not return 'ok' status if we have failed to found device.
(Since it looks like the device is monitored)
2013-04-25 17:33:24 +02:00
Zdenek Kabelac
d51b7e5404 clvmd: avoid pretesting of dev availability
Patch fixes hidden problem with lvm metadata caching.

When the pretest was made, only the commited data have been cached back
since the call lv_info_by_lvid() triggers mda read operation.
However call of lv_suspend_if_active() also reads precommited metadata.
The problem is visible in this sequence of calls:

vg_write(), suspend_lv(), vg_commit(), resume_lv()

which may end with leaving outdated mda in lvm cache, since vg_write()
drops cached metadata and vg_commit() only transforms precommited
to commited metadata, but in the case of pretesting we have
no precommited mda available so the cache will continue to use
old metadata. This happens, when suspend LV is inactive.
2013-04-25 17:33:22 +02:00
Zdenek Kabelac
994c32272e test: singlenode minor cleanups
Move unnecessary code out of locks.
2013-04-21 23:15:07 +02:00
Zdenek Kabelac
9cdcde494f cleanup: drop unwanted ';' 2013-04-21 23:15:07 +02:00
Zdenek Kabelac
d38af2857f cleanup: cast to len's type
Cleanup different signess gcc warning.
2013-04-21 23:14:05 +02:00
Zdenek Kabelac
a2b76a6f02 thin: fix resource leak in err path
If the devices list could not have been obtained, FILE* was leaked.
2013-04-21 23:10:30 +02:00
Zdenek Kabelac
377e06b0f8 lvmetad: cleanup
Move individual assignments to simplier structure setup.
2013-04-21 23:02:43 +02:00
Zdenek Kabelac
bee3f4b930 dmeventd: cleanup
Drop unneeded reset of data pointer to NULL, since this if() code path
is executed when data is NULL.
2013-04-21 23:02:43 +02:00
Zdenek Kabelac
8184a57c2b dmeventd: prevent double free
Since device.name is relased on more places, mark already
released name with NULL.
2013-04-21 23:02:36 +02:00
Zdenek Kabelac
5ea466673a dmeventd: convert union to struct members
Sharing char* with field has a problem in error path,
when we allocate event, but fail to allocate timeout string.
Instead of creating complicated error paths to resolve
it individually stop using unions, and let the resource
to be released in a simple _free_message().
2013-04-21 23:01:35 +02:00
Zdenek Kabelac
45f396f2a0 dmeventd: check for msg.data nonnull
Ensure we will not use  msg.data as NULL for strchr.
2013-04-21 22:56:59 +02:00
Zdenek Kabelac
5070ffbca7 clvmd: avoid logging in signal handler
debuglog in the main thread.
2013-04-21 22:56:59 +02:00
Zdenek Kabelac
61d0ae7019 clvmd: use pclose
For popened FILE use pclose.
2013-04-21 22:56:59 +02:00
Zdenek Kabelac
0125518d6d clvmd: preserve foreground mode across restart
Keep clvmd in foreground when restarted.
Useful for testing.
2013-04-21 22:56:48 +02:00
Zdenek Kabelac
c9d8d22224 clmvd: fix responce status
Failing status code is expected to be 0.
Also do not return '*response' as pointer which has been already free().
2013-04-21 22:54:42 +02:00
Petr Rockai
95372a852b lvmetad: Fix a memory leak introduced in 15fdd5c90d. 2013-04-03 13:46:12 +02:00
Peter Rajnoha
386886f71c config: refer to config nodes using assigned IDs
For example, the old call and reference:

  find_config_tree_str(cmd, "devices/dir", DEFAULT_DEV_DIR)

...now becomes:

  find_config_tree_str(cmd, devices_dir_CFG)

So we're referring to the named configuration ID instead
of passing the configuration path and the default value
is taken from central config definition in config_settings.h
automatically.
2013-03-06 10:14:33 +01:00
Zdenek Kabelac
d3b8f270ea headers: add headers for musl libc
On glibc, those are erroneously (namespace pollution) pulled in via
other headers. this doesn't work with conformant libcs (musl libc in
this case), we simply need to include all needed headers.

Signed-Off-By: John Spencer <maillist-lvm@barfooze.de>
2013-02-05 14:27:25 +01:00
Zdenek Kabelac
8bcc1da2f3 locales: use higher prio LC_ALL variable
For reseting locale environment into significantly less memory
consuming version 'C' - use LC_ALL instead of LANG since it has
higher priority in locale settings.

Otherwise we may observe whole locale-archive which might be
over 100MB on i.e. Fedora systems locked in memory with
some daemons.
2013-01-22 11:25:02 +01:00
Petr Rockai
15fdd5c90d lvmetad: Fix a race in metadata update.
The idea is to avoid a period when an existing VG is not mapped to either the
old or the new name. (Note that the brief "blackout" was present even if the
name did not actually change.) We instead allow a brief overlap of a VG existing
under both names, i.e. a query for a VG might succeed but before a lock is
acquired the VG disappears.
2013-01-16 11:19:33 +01:00
Peter Rajnoha
6fc596ca90 dmeventd: close dmeventd FIFO FDs on exec (add FD_CLOEXEC). 2013-01-15 14:59:54 +01:00
Zdenek Kabelac
69099e7ef5 Revert "lvmetad: simplify pvid memory allocation."
This reverts commit ed23da95b6.

Hash table device_to_pvid  seems to contain references to
already deleted pvids and so revert to the older
behaviour using allocated memory.
2012-12-17 13:49:19 +01:00
Petr Rockai
5294a6f77a lvmetad: Fix a possible race in remove_metadata.
All operations on shared hash tables need to be protected by mutexes. Moreover,
lookup and subsequent key removal need to happen atomically, to avoid races (and
possible double free-ing) between multiple threads trying to manipulate the same
VG.
2012-12-17 00:47:55 +01:00
Petr Rockai
fae1a611d2 lvmetad: Fix a possible deadlock.
If an update and a query were running in parallel, there was a slim but non-zero
chance of a deadlock due to (unnecessary) mutex nesting.
2012-12-17 00:47:55 +01:00
Zdenek Kabelac
ed23da95b6 lvmetad: simplify pvid memory allocation.
Since pvid_dup and cft config appears to be tightly
binded together - reuse it's memory pool for string.
Simplifies release of hashes.
2012-12-15 17:23:28 +01:00
Zdenek Kabelac
6f9e26f5c0 thin: dmeventd fix memleak on error path
Some error paths on _umount have leaked bitset.
2012-12-15 17:23:27 +01:00
Zdenek Kabelac
ba3f37c9e4 lvmetad: fix memleak on pv_found error path
Free resources allocated in pv_found when going out
through error path.
2012-12-15 17:23:27 +01:00
Zdenek Kabelac
399fc1bb33 lvmetad: keep returned struct fully initialized
Always clear the response structure.
Simplify daemon_reply initialization.
2012-12-15 17:23:27 +01:00
Zdenek Kabelac
a4269aadf3 lvmetad: unlock vg on out-of-memory path
If we fail to get memory for mutex, hash the mutex
or fail somewhere along pthread function calls
return allocated resources back and unlock vg_lock_map mutex.
2012-12-15 17:23:26 +01:00
Zdenek Kabelac
a266154e1f cleanup: singlenode minor change
Use strcpy instead of sprintf for plain string.
And use dm_strncpy for safer strncpy.

TODO: Fix API return values for cluster functions.
2012-12-15 14:57:40 +01:00
Zdenek Kabelac
1b05438fcb cleanup: ignore errors
Since we are doing just dump and function doesn't report
any error, explicitely ignore return values from
dm_config_write_node and dm_asprintf.

Same applies for the logging function.
2012-12-15 14:57:40 +01:00