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Commit Graph

73 Commits

Author SHA1 Message Date
David Teigland
62a87c84ed lvmlockd: ignore cmd close if no locks were taken
When a command closes its connection, don't waste
time looking for locks to purge if it did not make
any lock requests.
2015-08-19 12:16:04 -05:00
David Teigland
ce2e60ab45 lvmlockd: change log_error to log_debug for non error
It's not uncommon for a command like vgchange -an to
deactivate and unlock LVs that were not active, so
don't lock that as an error.
2015-08-19 11:43:39 -05:00
David Teigland
597de9d586 lvmlockd: add LV name to some debug logging
The LV uuid is used as the lock name, and including
the LV name in some log messages makes it easier to
follow log messages.
2015-08-10 15:07:10 -05:00
David Teigland
6bd5bf3cb5 lvmlockd: fix check for other sanlock lockspaces
The check for other sanlock lockspaces was not checking
that the lockspace type was sanlock, so if dlm lockspaces
were visible, they were wrongly included.
2015-08-10 13:16:04 -05:00
David Teigland
fd1782b5fc lvmlockd: handle loss of sanlock lease storage
This adds the infrastructure, code paths, error reporting,
etc. to handle storage errors, or storage loss, under the
sanlock leases in a VG that is being used.  The loss of
storage means sanlock cannot renew its leases, which means
that the host needs to stop using the shared VG before its
leases expire.

This still requires manually shutting down a VG that has
lost lease storage, e.g. unmounting file systems,
deactivating LVs in the VG.  The next step is to
automatically use a command like blkdeactivate to do that.
2015-08-05 10:21:45 -05:00
Peter Rajnoha
83541123c8 coverity: fix cppcheck warnings
/lib/log/log.c:88: warning[invalidScanfArgType_int]: %llu in format string (no. 2) requires 'unsigned long long *' but the argument type is 'long long *'.
daemons/lvmlockd/lvmlockd-core.c:791: error[uninitstring]: Dangerous usage of 'version' (strncpy doesn't always null-terminate it).
2015-08-04 09:33:55 +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
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
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
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
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
Alasdair G Kergon
dfe3eb12d0 include: Standardise around new tool.h. 2015-07-06 17:30:18 +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