1
0
mirror of git://sourceware.org/git/lvm2.git synced 2024-12-22 17:35:59 +03:00
Commit Graph

1172 Commits

Author SHA1 Message Date
Peter Rajnoha
46e6b2b86e coverity: fix possible resource leak in lvmpolld-core
/daemons/lvmpolld/lvmpolld-core.c:573: leaked_storage: Variable "cmdargv" going out of scope leaks the storage it points to.
2015-08-04 09:25:47 +02:00
David Teigland
d11f8d4228 lvmlockd: automatically remove the dlm global lockspace
The dlm global lockspace is automatically added when the
first dlm VG lockspace is added.  Reverse this by removing
the dlm global lockspace after the last dlm VG lockspace
is removed.  (Remove old non-working code that did this
based on an old command that could explicitly add/remove
the dlm global lockspace.)
2015-08-03 10:23:01 -05:00
David Teigland
78135c24b4 lvmlockd: small fixes and cleanup for lvmlockctl
. clean up the info output for readability
. remove some internal debug output
. fix the daemon quit option
2015-07-30 10:50:22 -05:00
Peter Rajnoha
f6473baffc toolcontext: add switches to create_toolcontext for connections and filters init
Make it possible to decide whether we want to initialize connections and
filters together with toolcontext creation.

Add "filters" and "connections" fields to struct
cmd_context_initialized_parts and set these in cmd_context.initialized
instance accordingly.

(For now, all create_toolcontext calls do initialize connections and
filters, we'll change that in subsequent patch appropriately.)
2015-07-30 13:54:09 +02:00
Peter Rajnoha
6b0c464a34 refactor: toolcontext: add struct cmd_context_initialized_parts
Add struct cmd_context_initialized_parts to wrap up information
about which cmd context pieces are initialized and add variable
of this struct type into struct cmd_context.

Also, move existing "config_initialized" variable that was directly
part of cmd_context into the new cmd_context.initialized wrapper.

We'll be adding more items into the struct cmd_context_initialized_parts
with subsequent patches...
2015-07-30 13:54:05 +02:00
David Teigland
9aabf441bd vgremove: warn when removing sanlock global lock
When the sanlock VG holding the global lock is removed,
print a warning indicating that the global needs to be
enabled in another sanlock VG.
2015-07-29 14:27:32 -05:00
David Teigland
772b54a08b vgcreate: improve checks for existing global lock
This tries harder to avoid creating duplicate global locks in
sanlock VGs by refusing to create a new sanlock VG with a
global lock if other sanlock VGs exist that may have a gl.
2015-07-29 14:27:32 -05:00
Alasdair G Kergon
fa11ddd7df lvmlockd: Drop -lrt now handled by configure. 2015-07-27 14:53:08 +01:00
Alasdair G Kergon
3934ade5a2 gitignore: Update for in-place build. 2015-07-27 13:18:35 +01:00
Alasdair G Kergon
be66243933 clvmd: Fix freeze if client dies holding locks.
Simply running concurrent copies of 'pvscan | true' is enough to make
clvmd freeze: pvscan exits on the EPIPE without first releasing the
global lock.

clvmd notices the client disappear but because the cleanup code that
releases the locks is triggered from within some processing after the
next select() returns, and that processing can 'break' after doing just
one action, it sometimes never releases the locks to other clients.

Move the cleanup code before the select.
Check all fds after select().
Improve some debug messages and warn in the unlikely event that
select() capacity could soon be exceeded.
2015-07-23 23:10:16 +01:00
David Teigland
57534733b7 lvmlockd: improve check for duplicate global locks
When there are duplicate global locks, check if the gl
is still enabled each time a gl or vg lock is acquired
in the lockspace.  Once one of the duplicates is disabled,
then other hosts will recognize that the issue is resolved
without needing to restart the lockspaces.
2015-07-23 10:39:11 -05:00
David Teigland
85b42d7c95 lvmlockd: improve errors when lvm is built without a lock manager
When lvmlockd is compiled without support for one of the
lock managers (sanlock or dlm), and a command tries to use
one of them, explain that in the error message.
2015-07-17 11:16:18 -05:00
Marian Csontos
738ae4a77f lvmpolld: Fix segfault on 32 bit architectures
Explicit conversions are needed to align writes and reads on the stack.
int64_t is popped from stack while int was pushed.
2015-07-10 16:16:57 +02:00
David Teigland
6294509cc6 coverity: cleanup related to lvmlockd
A couple missing mutex unlock on error bugs.
A bunch of buffer size/termination warnings.
2015-07-09 11:29:28 -05:00
Peter Rajnoha
10d27998b3 coverity: missing return value checks 2015-07-09 15:15:15 +02:00
Peter Rajnoha
a9a7c297ae coverity: missing return value for dm_split_lvm_name pass proper DM name instead of NULL value 2015-07-09 13:11:57 +02:00
Peter Rajnoha
023cf21848 coverity: fix possible invalid dereferences
lib/format1/import-export.c:167: var_deref_op: Dereferencing null pointer "vg->lvm1_system_id"
lib/cache/lvmetad.c:1023: var_deref_op: Dereferencing null pointer "this"
daemons/lvmlockd/lvmlockd-core.c:2659: check_after_deref: Null-checking "act" suggests that it may be null, but it has already been dereferenced on all paths leading to the check
/daemons/lvmetad/lvmetad-core.c:1024: check_after_deref: Null-checking "pvmeta" suggests that it may be null, but it has already been dereferenced on all paths leading to the check
2015-07-09 12:07:41 +02:00
David Teigland
903569d533 lvmlockd: remove log_error instances for normal conditions
There are a number of log_error instances that are replaced
by log_debug because they are not errors.
2015-07-08 15:25:14 -05:00
David Teigland
de13abdfdf lvmlockd: fix unreachable code 2015-07-08 11:02:11 -05:00
David Teigland
2566bdfbc3 lvmlockctl: fix uninitialized names
When formatting and printing info from lvmlockd.
Also fix some new line problems.
2015-07-08 10:58:56 -05:00
Peter Rajnoha
3ec4813ba2 coverity: fix missing initialization
... Using uninitialized value "lockd_state" when calling "lockd_vg"
(even though lockd_vg assigns 0 to the lockd_state, but it looks at
previous state of lockd_state just before that so we need to have
that properly initialized!)

libdm/libdm-report.c:2934: uninit_use_in_call: Using uninitialized value "tm". Field "tm.tm_gmtoff" is uninitialized when calling "_get_final_time".

daemons/lvmlockd/lvmlockctl.c:273: uninit_use_in_call: Using uninitialized element of array "r_name" when calling "format_info_r_action". (just added FIXME as this looks unfinished?)
2015-07-08 14:53:30 +02:00
Peter Rajnoha
71f4fbfbde coverity: fix uninitialized values and other reported problems
daemons/lvmlockd/lvmlockd-core.c:5709: error[uninitStructMember]: Uninitialized struct member: ds.....
daemons/lvmlockd/lvmlockd-core.c:799: error[uninitstring]: Dangerous usage of 'version' (strncpy doesn't always null-terminate it)
daemons/lvmlockd/lvmlockd-core.c:646: error[memleakOnRealloc]: Common realloc mistake: 'pollfd' nulled but not freed upon failure
2015-07-08 14:19:51 +02:00
Peter Rajnoha
16e9b32c2f coverity: fix resource leaks
lib/log/log.c:115: leaked_storage: Variable "st" going out of scope leaks the storage it points to
daemons/lvmpolld/lvmpolld-core.c:573: leaked_storage: Variable "cmdargv" going out of scope leaks the storage it points to
daemons/lvmlockd/lvmlockd-core.c:5341: leaked_handle: Handle variable "fd" going out of scope leaks the handle
daemons/lvmlockd/lvmlockctl.c:575: overwrite_var: Overwriting "able_vg_name" in "able_vg_name = strdup(optarg)" leaks the storage that "able_vg_name" points to
daemons/lvmlockd/lvmlockctl.c:571: overwrite_var: Overwriting "able_vg_name" in "able_vg_name = strdup(optarg)" leaks the storage that "able_vg_name" points to
daemons/lvmlockd/lvmlockctl.c:385: leaked_handle: Handle variable "s" going out of scope leaks the handle
2015-07-08 13:56:06 +02:00
Ondrej Kozina
088ee7618d lvmpolld: fix possible memory corruption with mem debug
if lvm2 is built with debug memory options dm_free() is not
mapped directly to std library's free(). This may cause memory corruption
as a line buffer may get reallocated in getline with realloc.

This is a temporary hotfix. Other debug memory failure needs to
be investigated and explained.
2015-07-07 14:49:53 +02:00
David Teigland
d16332be72 lvmetactl: program to interact with lvmetad
This is not installed; it's only a developer utility
at this point.
2015-07-06 15:54:22 -05:00
Alasdair G Kergon
dfe3eb12d0 include: Standardise around new tool.h. 2015-07-06 17:30:18 +01:00
David Teigland
d3605b81f3 configure: enable building lvmlockd without sanlock or dlm 2015-07-06 11:09:58 -05:00
Alasdair G Kergon
810ab095e6 macros: Wrap PRI with FMT.
Create a set of wrappers with embedded % such as
  #define FMTu64 "%" PRIu64
2015-07-06 15:09:17 +01:00
Alasdair G Kergon
36ce97c625 pre-release 2015-07-03 16:34:40 +01:00
David Teigland
fe70b03de2 Add lvmlockd 2015-07-02 15:42:26 -05:00
David Teigland
bf77f71711 lvmetad: add invalidation method
Add the ability to invalidate global or individual VG metadata.
The invalid state is returned to lvm commands along with the metadata.
This allows lvm commands to detect stale metadata from the cache and
reread the latest metadata from disk (in a subsequent patch.)

These changes do not change the protocol or compatibility between
lvm commands and lvmetad.

Global information
------------------

Global information refers to metadata that is not isolated
to a single VG , e.g. the list of vg names, or the list of pvs.

When an external system, e.g. a locking system, detects that global
information has been changed from another host (e.g. a new vg has been
created) it sends lvmetad the message: set_global_info: global_invalid=1.
lvmetad sets the global invalid flag to indicate that its cached data is
stale.

When lvm commands request information from lvmetad, lvmetad returns the
cached information, along with an additional top-level config node called
"global_invalid".  This new info tells the lvm command that the cached
information is stale.

When an lvm command sees global_invalid from lvmated, it knows it should
rescan devices and update lvmetad with the latest information.  When this
is complete, it sends lvmetad the message: set_global_info:
global_invalid=0, and lvmetad clears the global invalid flag.  Further lvm
commands will use the lvmetad cache until it is invalidated again.

The most common commands that cause global invalidation are vgcreate and
vgextend.  These are uncommon compared to commands that report global
information, e.g. vgs.  So, the percentage of lvmetad replies containing
global_invalid should be very small.

VG information
--------------

VG information refers to metadata that is isolated to a single VG,
e.g. an LV or the size of an LV.

When an external system determines that VG information has been changed
from another host (e.g. an lvcreate or lvresize), it sends lvmetad the
message: set_vg_info: uuid=X version=N.  X is the VG uuid, and N is the
latest VG seqno that was written.  lvmetad checks the seqno of its cached
VG, and if the version from the message is newer, it sets an invalid flag
for the cached VG.  The invalid flag, along with the newer seqno are saved
in a new vg_info struct.

When lvm commands request VG metadata from lvmetad, lvmetad includes the
invalid flag along with the VG metadata.  The lvm command checks for this
flag, and rereads the VG from disk if set.  The VG read from disk is sent
to lvmetad.  lvmetad sees that the seqno in the new version matches the
seqno from the last set_vg_info message, and clears the vg invalid flag.
Further lvm commands will use the VG metadata from lvmetad until it is
next invalidated.
2015-06-23 16:36:33 -05:00
David Teigland
fd1376ebef libdaemon: move compare_config to lib
so it can be used elsewhere.
2015-06-17 13:07:52 -05:00
Zdenek Kabelac
ac6b355978 cleanup: drop double const
Second const is unneeded.
Also always create whole array with MAX elements.
2015-06-15 14:46:44 +02:00
Zdenek Kabelac
edbdbddfb6 dmeventd: better debug
Avoid using 'static' variable within threaded environmnent for debuging.
2015-06-15 14:46:44 +02:00
Zdenek Kabelac
3d5f7f90c8 dmeventd: drop stack 2015-06-15 14:46:44 +02:00
Zdenek Kabelac
9da07f1d3e dmeventd: drop pthread_cancel
Drop unused pthread canceling as well as DEBUG printing in signal
handler.
2015-06-15 14:46:44 +02:00
Petr Rockai
4f91ad64c3 lvmetad: Make it possible to clear the outdated PVs list for a VG. 2015-06-10 16:18:57 +02:00
David Teigland
fd29c7f3a1 lvmetad, lvmpolld: remove DL_LIBS from Makefile
and rdynamic.  They are not needed.
2015-06-08 11:48:22 -05:00
Zdenek Kabelac
d1531ab26d cleanup: gcc warn fix, don't hide pvs() 2015-05-27 11:10:43 +02:00
Ondrej Kozina
1aba262edb lvmpolld: terminate error message with a dot and LF 2015-05-27 11:10:43 +02:00
Ondrej Kozina
c069aff21b lvmpolld: zero errno in before strtoul call
Testing errno value without explicitly setting to
zero in before the strtoul call may lead to
unexpected failures.
2015-05-26 16:27:03 +02:00
Alasdair G Kergon
eeb498627c libdm: Add dm_task_get_errno to return ioctl errno.
There are reports of unexplained ioctl failures when using dmeventd.
An explanation might be that the wrong value of errno is being used.

Change libdevmapper to store an errno set by from dm ioctl() directly
and provide it to the caller through a new dm_task_get_errno() function.

[Replaced f9510548667754d9209b232348ccd2d806c0f1d8]
2015-05-26 15:13:49 +01:00
Petr Rockai
55f3369692 lvmetad: Provide entire pvmeta sections for outdated_pvs. 2015-05-20 19:46:14 +02:00
Petr Rockai
1562cd7320 lvmetad: Attach an outdated_pvs list to vg_lookup replies. 2015-05-20 19:46:13 +02:00
Petr Rockai
da1527d65d lvmetad: Clear the vgid_to_outdated_pvs hash on shutdown. 2015-05-20 19:46:13 +02:00
Petr Rockai
925268794f lvmetad: Maintain info about outdated PVs. 2015-05-20 19:46:13 +02:00
Ondrej Kozina
d4317c0406 lvmpolld: don't return success on invalid option 2015-05-15 20:33:40 +02:00
Ondrej Kozina
d34de2d912 lvmpolld: add long option variants for all short ones 2015-05-15 20:33:34 +02:00
Ondrej Kozina
b91e1ea95e lvmpolld: introduce client functionality
as of now lvmpolld works as client utility for
querying running instance of lvmpolld server
on metadata, state, etc.

Currently the only request implemented is the '--dump'.
It prints out full lvmpolld state (mimics lvmdump -p command).
2015-05-15 20:33:27 +02:00
Ondrej Kozina
333fdfd4b6 lvmpolld: label known return codes
so that lvmpolld-client can decode and describe these
return codes properly
2015-05-15 20:31:48 +02:00
Zdenek Kabelac
b184d7a2ca makefiles: drop DEBUG mangling
DEBUG is already set through make.tmpl.
2015-05-14 00:19:33 +02:00
Zdenek Kabelac
7bd1559db6 makefiles: testclient is not valid target 2015-05-14 00:19:32 +02:00
Ondrej Kozina
d5cef7413f lvmpolld: dump cleanup 2015-05-12 17:17:07 +02:00
Ondrej Kozina
d758115786 lvmpolld: by default spawn lvpoll cmd with -An 2015-05-11 19:08:13 +02:00
Ondrej Kozina
5cfd7074af lvmpolld: set use counters properly in lvmpolld_store
set active_polling_count to zero in pdst_init fn
2015-05-11 19:08:00 +02:00
Ondrej Kozina
e587b0677b lvmpolld: Add standalone polldaemon.
See doc/lvmpolld_overview.txt
2015-05-09 00:59:18 +01:00
Zdenek Kabelac
636bcb020a clvmd: missed newline in help text
Print \n after listing included lock managers.
2015-05-03 00:41:20 +02:00
Zdenek Kabelac
923902013c lvmetad: drop unused vars
Squash some unused vars introduced in some previous commit.s
2015-04-29 15:09:58 +02:00
Petr Rockai
4946c64092 lvmetad: Avoid duplicate entries in the list of alternate devices. 2015-04-29 13:23:23 +02:00
Zdenek Kabelac
bff3a1651d debug: use epoch for dmeventd logging
When LVM_LOG_FILE_EPOCH is set, route lvm command debug message
to lvm.conf log file instead of syslog.
2015-04-20 12:12:22 +02:00
Petr Rockai
a1dd61459c lvmetad: Track alternate devices for PVs.
There are two reasons for this: first, this allows the client side to notice
that some PV has multiple devices associated with it and print appropriate
warnings. Second, if a duplicate device pops up and disappears, after this
change the original connection between the PV and device is not lost.
2015-04-14 20:18:27 +02:00
Zdenek Kabelac
4459413225 clvmd: singlenode signals only when lock changes
There is no benefit in waking-up all the waiters
when there is no actual change in lock state.
This avoid some unnecessarily ping-pong effects like:

 Resource V_LVMTEST15724vg retrying lock in mode:WRITE...
 Resource V_LVMTEST15724vg already locked lockid=40, mode:WRITE
 Resource V_LVMTEST15724vg retrying lock in mode:WRITE...
 Resource V_LVMTEST15724vg already locked lockid=40, mode:WRITE
2015-04-08 23:19:34 +02:00
Petr Rockai
373f855684 clvmd: Fix BZ 1140095 by updating lastfd upon EINTR. 2015-02-18 12:45:43 +01:00
Petr Rockai
eac4e1e939 dmeventd: Call lvscan --cache also for mirrors (in addition to RAID). 2015-01-14 18:05:44 +01:00
Alasdair G Kergon
6521c4b215 libdaemon: Fix some client leaks.
Free (and clear) h.protocol string on daemon_open() error paths
so it's OK for caller to skip calling daemon_close() if returned
h.socket_fd is -1.

Close h.socket_fd in daemon_close() to avoid possible leak.

https://bugzilla.redhat.com/1164234
2014-11-28 21:31:51 +00:00
Zdenek Kabelac
422d1ac8d2 man: clvmd updates
- closer to the recommendation of man-pages (7) if possible
- Add crossrefs
- Sort options and crossrefs
- Fix default timeout (60 secs) of -t
- Documents -I[auto]

Signed-off-by: Stéphane Aulery <saulery@free.fr>
2014-11-19 01:09:52 +01:00
Zdenek Kabelac
01760967b4 locking: rename LCK_CONVERT
All 'MODE' bits are using _MODE suffix so rename to LCK_CONVERT_MODE
(part of rhbz 735445).
No functional change.
2014-11-18 16:50:49 +01:00
Peter Rajnoha
eccc97f15a coverity: remove redundant condition
LVM2.2.02.112/daemons/clvmd/clvmd.c:1131: warning[arrayIndexOutOfBoundsCond]: Array 'row[8]' accessed at index 8, which is out of bounds. Otherwise condition 'j==8' is redundant.

This code:

int i,j = 0;
...
for (i = 0; i < len; ++i) {
	...
	if ((j == 8) || (i + 1 == len)) {
		for (;j < 8; ++j) {
			...
		}
		...
		j = 0;
	}
}

Indeed - j is 0 at the beginning, then iterating till j < 8,
then always zeroed at the end of the outer loop - so "j" never
reaching value of 8 - the j == 8 condition is redundant.
2014-11-12 09:30:02 +01:00
Alasdair G Kergon
9a5910bdf9 pre-release 2014-11-11 14:13:00 +00:00
Zdenek Kabelac
f12e3da639 cleanup: gcc warnings 2014-11-10 22:05:49 +01:00
Alasdair G Kergon
160777bb3e dmeventd: Add basic thread debugging messages.
Only with -DDEBUG.
2014-11-04 18:56:20 +00:00
Alasdair G Kergon
89f635a075 dmeventd: Include shutdown threads in responses.
When responding to DM_EVENT_CMD_GET_REGISTERED_DEVICE no longer
ignore threads that have already been unregistered but which
are still present.

This means the caller can unregister a device and poll dmeventd
to ensure the monitoring thread has gone away before removing
the device.  If a device was registered and unregistered in quick
succession and then removed, WAITEVENT could run in parallel with
the REMOVE.

Threads are moved to the _thread_registry_unused list when they
are unregistered.
2014-11-04 16:58:14 +00:00
Alasdair G Kergon
6b25faa218 dmeventd: Remove redundant checks.
The status of threads in _thread_registry is always DM_THREAD_RUNNING
(zero).

DM_EVENT_REGISTRATION_PENDING is never stored in thread->events.
2014-11-04 16:55:42 +00:00
David Teigland
8dc5f42254 metadata: Use flags to control warnings.
The warnings arg was used to enable logging of warnings
when reading a PV.  This arg is turned into a set of flags
with the WARN_PV_READ flag matching the existing behavior.

A new flag WARN_INCONSISTENT is added that will cause
vg_read_internal() to log the "VG is not consistent"
warning so the various callers do not need to log
this warning themselves.

A new vg_read flag READ_WARN_INCONSISTENT is used from
reporting to enable the WARN_INCONSISTENT flag in
vg_read_internal.

[Committed by agk with cosmetic changes and tweaks.]
2014-10-07 01:15:43 +01:00
Liuhua Wang
829e5a4037 cmirror: fix endian issues on s390
Cmirrord has endian bugs, which cause failure to lvcreate a mirrored lv
on s390.
- data_size is uint32, should not use xlate64 to convert, which will
  cause data_size 0 after xlate.
- request_type and data_size still used by local(v5_data_switch),
  should convert later.  If request_type xlate too early, it will
  cause request_type judge error; if data_size xlate too early, it
  will cause coredump in case DM_ULOG_CLEAR_REGION.
- when receiving package in clog_request_from_network. vp[0] will always
  be little endian.  We could use xlate64(vp[0]) == vp[0] to decide if
  the local node is little endian or not.

Signed-off-by: Lidong Zhong<lzhong@suse.com> & Liuhua Wang <lwang@suse.com>
Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
2014-09-15 16:08:35 -05:00
Zdenek Kabelac
3c8fa2aa01 clvmd: use correctly sized buffers for sscanf
sscanf needs extra 1 char for '\0'
2014-08-29 13:10:20 +02:00
Zdenek Kabelac
6d7f260f92 dmeventd: fix test for select return value
Do not call read when select return -1 && EINTR.
Also check for return valuer from read() and
abort write function when unexpected error happens.
2014-08-19 14:33:06 +02:00
Petr Rockai
5dc6671bb5 dmeventd: Call lvscan --cache in the RAID plugin. 2014-07-22 22:48:21 +02:00
Peter Rajnoha
3208396ce5 coverity: fix issues reported by coverity 2014-06-24 14:58:53 +02:00
Peter Rajnoha
5abdb52fdc report: select: refactor: move str_list to libdm
The list of strings is used quite frequently and we'd like to reuse
this simple structure for report selection support too. Make it part
of libdevmapper for general reuse throughout the code.

This also simplifies the LVM code a bit since we don't need to
include and manage lvm-types.h anymore (the string list was the
only structure defined there).
2014-06-17 16:27:20 +02:00
Zdenek Kabelac
9bccaf7ae4 cleanup: missed conversion to dm_malloc/free usage
Few missed unconverted dm_malloc/free calls.
2014-05-07 14:17:46 +02:00
Zdenek Kabelac
d88fab8d3a cleanup: drop uneeded headers 2014-05-07 14:17:45 +02:00
Jonathan Brassow
8b49d61d83 logging: Add LCK_REVERT_MODE to flags printed by decode_flags()
The decode_flags() function does not yet know about the
LCK_REVERT_MODE flag.
2014-05-05 14:30:09 -05:00
Zdenek Kabelac
cbdf63fdd2 cleanup: indent in devmapper-event
Drop header inclusion - this file is already included.
Shorten code.
2014-04-30 10:26:30 +02:00
Zdenek Kabelac
816cc94ac1 devmapper-event: always initialize timeout
Always pass fully initialized timeval struct to select.
2014-04-30 10:26:29 +02:00
Zdenek Kabelac
7a1777302f cleanup: dmeventd simplify restart message parsing
Since we already check every characted in the message,
skip extra callback to strlen, and do the implicit
message length checking.
2014-04-18 16:53:29 +02:00
Zdenek Kabelac
1f701c7bf6 cleanup: dmeventd drop setting of size
Size is not used when msg->data is NULL.
2014-04-18 16:52:59 +02:00
Zdenek Kabelac
78c6dea48e cleanup: dmeventd improve _handle_request
Let the compiler resolve cmd lookup and leave it to optimize it as it
needs.
2014-04-18 16:52:45 +02:00
Zdenek Kabelac
0927605ec3 cleanup: dmeventd improve _clien_write code
Switch to allocate buffer from heap, since it might be potentially
bigger when extremaly large set of volumes would be monitored.
In case of allocation failure send ENOMEM message.
Also implicitelly ignore msg->size when msg->data is NULL.
2014-04-18 16:52:35 +02:00
Zdenek Kabelac
3febd2c9d4 cleanup: dmeventd set next_time when registering
Don't change next_time, when thread is already registered.
2014-04-18 16:52:11 +02:00
Zdenek Kabelac
dc21bbfabd cleanup: dmeventd improve _get_status
Use directly dm_asprintf() to allocate buffer with message,
and properly detect failing on replacement of snprintf()
which also returns -1 on error.
2014-04-18 16:51:54 +02:00
Zdenek Kabelac
0503af8466 cleanup: dmeventd simplify buffer write loop 2014-04-18 16:50:55 +02:00
Zdenek Kabelac
13d05211d0 cleanup: dmeventd simplify status processing
Since we always know the string length, use simplier memcpy.
2014-04-18 16:38:52 +02:00
Zdenek Kabelac
4fb588c34e cleanup: dmeventd reorder _fill_device_data
Just simplify the function.
2014-04-18 16:38:51 +02:00
Zdenek Kabelac
6b701c3a48 cleanup: dmeventd abstract lvm2cmd interface
Keep  lvm2cmd  interface hidden inside dmeventd_lvm
and use regular 1/0 return codes, this we may
avoid using lvm2cmd.h in other lvm2 plugins.
2014-04-18 16:38:51 +02:00
Zdenek Kabelac
6448428d05 cleanup: add some comment indents...
Just cleanup things
2014-04-18 16:38:51 +02:00
Zdenek Kabelac
91eb8927fd cleanup: skip zeroing of cleared areas
Zalloc mem is already zeroed.
2014-04-18 16:38:51 +02:00
Zdenek Kabelac
20179523e2 cleanup: set _REENTRANT in header
Use same way of setting _REENTRANT as in other
files - set it in the first included header file
(clvmd-common.h)
2014-04-18 16:38:50 +02:00
Zdenek Kabelac
451a168bf8 cleanup: drop inclusion of devmap - merge 2014-04-18 16:38:50 +02:00
Zdenek Kabelac
589983a257 cleanup: include stdarg.h where needed.
Avoid dependency on implicit inclusion of stdarg.h with
libdevmapper.h.
2014-04-18 16:38:50 +02:00
Zdenek Kabelac
e552824dc0 makefiles: move subdir into same section
Just shift few lines
2014-04-18 16:38:49 +02:00
Zdenek Kabelac
07274f3dd4 makefiles: drop linking of deamon libs to plugins
Daemon lib is linked into lvm2cmd library.
2014-04-18 16:38:49 +02:00
Zdenek Kabelac
db0045dfc9 devmapper-event: always initialize timeout
Before calling select, always set all struct members of timeout.
2014-04-18 16:38:48 +02:00
Zdenek Kabelac
08e7de986c dmeventd: check for list size within lock
Move check for _thread_registry list size behind mutex.
Use alloca() instead of buffer[count] (they are the same anyway)
2014-04-18 16:38:48 +02:00
Zdenek Kabelac
0b6d6bfb77 thin: dmeventd plugins support more minors
Kernel supports upto 1M (20bit) minors.
TODO: convert to hash to reduce memory requirements
2014-04-18 16:38:47 +02:00
Zdenek Kabelac
d896abc705 cleanup: clvmd drop unused enum state 2014-04-14 13:02:27 +02:00
Zdenek Kabelac
e2f194952a cleanup: clvmd reindent local_pipe_callback
Move !node_up check in front and reindent
rest of the function to the left.
2014-04-14 13:02:27 +02:00
Zdenek Kabelac
eccc50d861 clvmd: use thread-safe ctime_r when debugging
Use thread friendly version of ctime
TODO:should be probably replaced with strftime()
2014-04-14 13:02:25 +02:00
Zdenek Kabelac
639983b6b7 clvmd: skip adding reply when finished
Prior adding new reply to the list, check
if the reply thread is not already finished.
In that case discard adding message
(which would otherwise be leaked).
2014-04-14 13:01:42 +02:00
Zdenek Kabelac
7236b92857 clvmd: improve mutex usage in request_timed_out
Use mutex to access localsock values, so check
num_replies when the thread is not yet finished.

Check for threadid prior the mutex taking
(though this check is probably not really needed)
2014-04-14 13:00:51 +02:00
Zdenek Kabelac
7075656034 clvmd: drop reply_mutex
Added complexity with extra reply mutex is not worth the troubles.
The only place which may slightly benefit from this mutex is timeout
and since this is rather error case - let's convert it to
localsock.mutex and keep it simple.
2014-04-14 12:59:07 +02:00
Zdenek Kabelac
6115c0d112 clvmd: set finished flag with mutex
Setting this variable needs to be protected with mutex.
2014-04-14 12:58:28 +02:00
Zdenek Kabelac
cc0096ebdd clvmd: move mutex init and detroy
Move the pthread mutex and condition creation and destroy
to correct place right after client memory is allocatedd
or is going to be released.

In the original place it's been in race with lvm thread
which could have still unlock mutex while it's been already
destroyed.
2014-04-14 12:57:39 +02:00
Zdenek Kabelac
91f4e09b48 clvmd: fix test mode race
When TEST_MODE flag is passed around the cluster,
it's been use in thread unprotected way, so it may have
influenced behaviour of other running parallel lvm commands
(activation/deactivation/suspend/resume).

Fix it by set/query function only under lvm mutex.
For hold_un/lock function calls check lock_flags bits directly.
2014-04-14 12:55:46 +02:00
Zdenek Kabelac
5553a099d1 cleanup: use DM_ARRAY_SIZE
More use of libdevmapper macro
2014-04-08 11:00:15 +02:00
Alasdair G Kergon
c16c1a9f70 clvmd: Update new remove_info INTERNAL_ERRORS. 2014-04-04 01:37:43 +01:00
Zdenek Kabelac
3fda296da6 cleanup: lvmetad use dm_hash_iterator
Simplify code with the use of dm_hash_iterator
2014-03-26 14:11:37 +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
db71739f42 cleanup: initilization of vars 2014-03-25 11:22:58 +01:00
Zdenek Kabelac
5c9165705a cleanup: indent 2014-03-25 11:22:58 +01:00
Zdenek Kabelac
c7b2c08a6b cleanup: use NULL for pointer reset 2014-03-25 11:22:58 +01:00
Zdenek Kabelac
b714c7ebc6 clvmd: validate open device state
If clvmd does not hold any lock, it should also not keep any opened
device.

The reason for this patch is, that refresh_toolcontext calls
dev_cache_exit() which destroys whole device cache (even those with
opened file) - previous patch added recovery path to avoid memory
corruption, but opened files are still bugs that need to be fixed.

So this patch certainly kills many internal mirror & raid tests,
since they leak opened file descriptors (when tests are executed
with 'abort_on_error').
2014-03-25 11:22:57 +01:00
Zdenek Kabelac
b522312678 clvmd: hardening leak on exit
Operate with lvm_thread_exit while holding lvm_thread_mutex.
Don't leave unfinished work in the lvm thread queue
and always finish all queued tasks before exit,
so no cmd struct is left in the list.

(in-release fix)
2014-03-25 11:22:57 +01:00
Zdenek Kabelac
01efb20bdb cleanup: clvmd add more info debug message 2014-03-21 22:29:27 +01:00
Zdenek Kabelac
0d449fe183 cleanup: clvmd uses struct initializers
Code easier to read
2014-03-21 22:29:27 +01:00
Zdenek Kabelac
9196274c1e cleanup: clvmd zombie removal loop
Simplier code to start scan from the next node,
and remove matching pipe client.
2014-03-21 22:29:27 +01:00
Zdenek Kabelac
5740c00f3b cleanup: clvmd reindent read_from_local_sock
Shift indent of else branch to right since
error path returns in the front.
(Simplier to read)
2014-03-21 22:29:26 +01:00
Zdenek Kabelac
dd17286c90 cleanup: clvmd indent change
Plain indent changes.
2014-03-21 22:29:26 +01:00
Zdenek Kabelac
0b79979bb9 cleanup: clvmd dump_messages 2014-03-21 22:29:26 +01:00
Zdenek Kabelac
f8cd435cd8 cleanup: clvmd update log_error
Drop \n from log_error() and add '.'
2014-03-21 22:29:26 +01:00
Zdenek Kabelac
4c97ea2ce5 cleanup: clvmd drop goto 2014-03-21 22:29:25 +01:00
Zdenek Kabelac
7d49c33ffc cleanup: clvmd skip reset of null pointer 2014-03-21 22:29:25 +01:00
Zdenek Kabelac
bf19c6be2c cleanup: clvmd move destroy_lvhash into main
Keep destruction code path consistent and simple and
destroy lvhash in the place it's been created.
Also issue debug message from a single place.
2014-03-21 22:29:25 +01:00
Zdenek Kabelac
46ae028cd3 singlenode: reset pointer when hash is destroyed
Just keep pointer consistent.
2014-03-21 22:29:25 +01:00
Zdenek Kabelac
7041c8bf51 clvmd: drop dead code
Since pipe_client has been already reset to NULL,
remove this dead code.
2014-03-21 22:29:24 +01:00
Zdenek Kabelac
73978f8d7d clvmd: drop unused local_sock parameter 2014-03-21 22:29:24 +01:00
Zdenek Kabelac
37396e2fe5 clvmd: update add_reply_to_list
Take mutex lock after the allocation just before
the structure is merged into reply list.
2014-03-21 22:29:24 +01:00
Zdenek Kabelac
2847994624 clvmd: use dm_malloc
Use libdm malloc wrapper functions.
2014-03-21 22:29:24 +01:00
Zdenek Kabelac
c45cd6eb8d clvmd: move call of cluster_closedown
We have to close cluster in some predicatable way,
otherwise we may access released memory from different
threads.

So move closedown till the point we know all thread
are closed. New messages from cluster are discarded.
2014-03-21 22:29:23 +01:00
Zdenek Kabelac
fc39ad677b clvmd: move destroy_lvm into lvm thread
Since lvm was initialized in lvm thread call destroy there as well.
2014-03-21 22:29:23 +01:00
Zdenek Kabelac
8431d47b3b clvmd: add special lvm thread exit
When multiple threads act on the same 'quit' variable
the order of exit becomes unpredictable.

So let the main_loop() finish first and then clean up
all queued lvm jobs.

Do not add any new work, when lvm_thread_exit is set.
2014-03-21 22:29:23 +01:00
Zdenek Kabelac
05a532e171 clvmd: always set cleanup_needed
When thread is created, set the cleanup_needed flag
immediately so it could be used properly any time later
when cleanup_zombie() is needed.
2014-03-21 22:29:23 +01:00
Zdenek Kabelac
5bea2b5c82 clvmd: fix clean memory on exit
Properly clean 'client' structure only for LOCAL_SOCK type.
(Fixes bug from commit 460c19df62)
(in release fix)

Also cleanup-up associated pthreads by using cleanup_zombie() function.
Since this function may change the list, restart scanning always from
the list header.

Note: couple following patches are necessary to make this working properly.
2014-03-21 22:29:22 +01:00
Jonathan Brassow
bdd7baeab3 cmirrord: Clean-up stray warning message (attempt #2)
There are two types of CPG communications in a corosync cluster:
messages and state transitions.  Cmirrord processes the state
transitions first.

When a cluster mirror issues a POSTSUSPEND, it signals the end of
cluster communication with the rest of the nodes in the cluster.
The POSTSUSPEND marks the last communication of the 'message'
type that will go around the cluster.  The node then calls
cpg_leave which causes a final 'state transition' communication to
all of the nodes.  Once the out-going node receives its own state
transition notice from the cluster, it finalizes the leave.  At this
point, the state of the log is 'INVALID'; but it is possible that
there remains some cluster trafic that was queued up behind the
state transition that still wants to be processed.  It is harmless
to attempt to dispatch any remaining messages - they won't be
delivered because the node is no longer in the cluster.  However,
there was a warning message that was being printed in this case
that is now removed by this patch.  The failure of the dispatch
created a false positive condition that triggered the message.
2014-03-19 14:43:00 -05:00
Peter Rajnoha
b16235de96 cleanup: use 'define' for systemd runtime unit file directory 2014-03-14 15:57:44 +01:00
Petr Rockai
551b6b7998 lvmetad: Fix pvmeta_old_{pvid,dev} logic when they are the same. 2014-03-14 10:09:16 +01:00
Marian Csontos
67c539f346 lvmetad: Fix previous commit
"%d" in buffer_append_vf is 64 bit wide. Using just `int` for the
variable will fetch more from va_list than intended and shifting
remaining arguments resulting in errors like:

    Internal error: Bad format string at '#orphan'
2014-03-14 08:09:37 +01:00
Petr Rockai
816197aaab lvmetad: Indicate whether pv_found caused the VG to change. 2014-03-14 03:08:19 +01:00
Petr Rockai
5eef269f77 lvmetad: Also return vgname in reply to pv_found requests. 2014-03-14 03:08:19 +01:00
Zdenek Kabelac
6c892be4a5 clvmd: fix the len setting in last commit
When theoretically sending 0 length buffer, ensure 0 is returned.
2014-03-10 12:35:44 +01:00