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Commit Graph

627 Commits

Author SHA1 Message Date
Zdenek Kabelac
044abcf91b Use sysfs to set/get of read-ahead
If we know major:minor number of device (which is known after resume) we will
try to use  sysfs to set/get read ahead parameters of device.
This avoid potential problem of blocking commands like 'dmsetup info' awaiting
for device being usable for open/close - i.e. overfilled thin pool may block
such command.
2012-01-09 12:26:14 +00:00
Zdenek Kabelac
99a150fc26 Add dm_config_find_str_allow_empty
Support empty string values.
2011-12-21 12:47:44 +00:00
Peter Rajnoha
0644371f09 Fix lvm2-monitor init script to use normalized output when using vgs. 2011-12-07 12:29:41 +00:00
Zdenek Kabelac
5392675f4c Check target type name for DM_MAX_TYPE_NAME length
Avoid creation of target type name when it's longer then
DM_MAX_TYPE_NAME (noticed by static analyzer where the
sp.target_type might be missing '\0' at the end.)

Before patch:

$> dmsetup create long
0 1000 looooooooooooooooooooooooooong
^D
device-mapper: reload ioctl failed: Invalid argument

After patch:

$> dmsetup create xxx
0 1000 looooooooooooooooooooooooooong
Target type name looooooooooooooooooooooooooong is too long.
Command failed
2011-11-18 19:34:02 +00:00
Alasdair Kergon
fb7817fe7c Include a copy of kernel DM documentation in doc/kernel 2011-11-15 13:54:20 +00:00
Zdenek Kabelac
5e62f7038f Update dmsetup man page
Use standard manpage style.
Keep options and commands in alphabetic order.
Added at least a very simply info about some other targets.
TODO: documenting targest needs far more work...
2011-11-12 22:48:44 +00:00
Mike Snitzer
52f3043f15 Fix _get_proc_number to be tolerant of malformed /proc/misc entries.
Fixes issue reported here: http://lkml.org/lkml/2011/11/8/190
2011-11-08 17:32:10 +00:00
Peter Rajnoha
8626490ca7 Add "ExecReload" to dm-event.service for systemd to reload dmeventd properly.
Normally, restart simply means "stop and start" for systemd. However, if
we're installing new versions of the dmeventd binary/libdevmapper, we need
to restart dmeventd. This fails if we have some devices monitored - we need
to call "dmeventd -R" instead.

The "ExecReload" did not work quite well in some old versions of systemd,
systemd assumed that only the configuration is reloaded on "ExecReload",
not the whole binary itself so it lost track of dmeventd daemon (it lost new
dmeventd PID). This is fixed and seems to be working fine now with recent
versions of dmeventd.
2011-10-31 12:22:49 +00:00
Zdenek Kabelac
7ad1c43b48 Add find_config_tree_str_allow_empty
Add function to allow read of empty strings as valid arguments.
Add a warning message if string argument has ignored value.
2011-10-28 20:06:49 +00:00
Zdenek Kabelac
fd6a1bfb74 Fix usage of DEBUG_ENFORCE_POOL_LOCKING with DEBUG_MEM
Since DEBUG_MEM is storing own extra structure within returned memory chunk,
glibc free must be used directly for posix_memaling() allocated block.
2011-10-23 15:38:02 +00:00
Zdenek Kabelac
e597d5a487 Aling structure chunk on default aling size
Since we use 8 bytes by default for the pool allocation,
keep the structure aligned with this size.
(Somehow it was not applied in previous commit.)
2011-10-20 14:43:33 +00:00
Zdenek Kabelac
3bdcf7c5e6 Mark chunk memory for free as defined again for valgrind
When DEBUG_MEM is used, the memory is trashed with extra pattern before real
free() is called, and as this memory was marked as non accessible when used with
valgrind, make it again usable.
2011-10-20 13:39:57 +00:00
Zdenek Kabelac
df0200e510 Aling structure chunk on default aling size
Since we use 8 bytes by default for the pool allocation,
keep the structure aligned with this size.
2011-10-20 13:36:13 +00:00
Zdenek Kabelac
e3359201cf Simplify some pointer operations 2011-10-20 13:33:41 +00:00
Zdenek Kabelac
909bc0fff1 Remove unused file from tree 2011-10-20 13:23:52 +00:00
Zdenek Kabelac
f857b3064f Cleanup backtraces
Make sure stacks are at the right places when something goes wrong here.
2011-10-20 10:38:04 +00:00
Milan Broz
ad2432dc68 Fix alignment warning in bitcount calculation for raid segment. 2011-10-17 13:15:35 +00:00
Zdenek Kabelac
0395dd2250 Use pool for dm_tree allocation
Using the same pool allocation strategy as we use for vg,
so dm_tree structure is part of the pool itself.
2011-10-14 13:34:19 +00:00
Zdenek Kabelac
9a8f192a38 Update error path tracing for _resume_node
dm_task_create & dm_task_set_name produces it's own log_error
Add missing stacks for dm_task_set_cookie, dm_task_run,
dm_task_get_info.
2011-10-03 18:28:25 +00:00
Zdenek Kabelac
4251236efc Add supporting function for thinp
New dm_tree_node_add_thin_pool_target() and  dm_tree_node_add_thin_target()
This API is highly experimental and unstable for now.
2011-09-29 08:53:48 +00:00
Zdenek Kabelac
f45106b726 Use NULL for pointers 2011-09-25 19:38:59 +00:00
Zdenek Kabelac
766d22825b Update dmsetup man page
While dmsetup command properly shows all dmsetup resume supported options,
man page missed to document it.
2011-09-23 09:51:37 +00:00
Zdenek Kabelac
598c92ff5c Build all man pages
When running plain 'make' in man dir - do also those for device-mapper target.
2011-09-23 09:48:21 +00:00
Peter Rajnoha
787200efd6 Add dm_tree_retry_remove to use retry logic for device removal in a dm_tree. 2011-09-22 17:36:50 +00:00
Peter Rajnoha
14254bd0be Add dm_device_has_holders fn to to check use of the device by another device.
Add dm_device_has_mounted_fs fn to check mounted filesystem on a device.

This requires sysfs directory to be correctly set via dm_set_sysfs_dir
(/sys by default). If sysfs dir is not used or it's set incorrectly,
dm_device_has_{holders,mounted_fs} will return 0!
2011-09-22 17:23:35 +00:00
Peter Rajnoha
07e237d6f4 Add dm_set_sysfs_dir to libdevmapper to set sysfs location.
Add dm_sysfs_dir to libdevmapper to retrieve sysfs location thas is set.
2011-09-22 17:17:07 +00:00
Peter Rajnoha
047e4cd2f5 Add --retry option for dmsetup remove to retry removal if not successful. 2011-09-22 17:12:28 +00:00
Peter Rajnoha
355b2224b2 Add dm_task_retry_remove fn to use retry logic for device removal.
This call ensures that the dm device removal is retried several
times before failing.
2011-09-22 17:09:48 +00:00
Peter Rajnoha
8171b93700 Retry DM_DEVICE_REMOVE ioctl if device is busy.
This is a workaround for long-lasting problem with using the WATCH udev
rule. When trying to remove a DM device, this one can still be opened
while processing the event in parallel (generated based on the WATCH
udev rule).

Let's use this until we have a proper solution.
2011-09-13 15:13:41 +00:00
Zdenek Kabelac
beecb1e160 Remove unused passed parameters 2011-09-07 08:37:48 +00:00
Alasdair Kergon
fe8f5dbeb7 Comments, FIXMEs, name changes. 2011-09-01 21:04:14 +00:00
Zdenek Kabelac
2d70959c86 Mark unreleased memory pools as internal error 2011-09-01 10:19:01 +00:00
Alasdair Kergon
2df01a9d3f post-release 2011-08-19 19:42:39 +00:00
Alasdair Kergon
499091c061 pre-release 2011-08-19 16:31:00 +00:00
Alasdair Kergon
415c0690af restrict dm_tree_node_add_null_area 2011-08-19 16:26:02 +00:00
Alasdair Kergon
4536abf08a post-release 2011-08-12 02:34:08 +00:00
Alasdair Kergon
34ae78d203 pre-release 2011-08-12 01:34:11 +00:00
Zdenek Kabelac
5bedb7a5e0 Fix memleak of geometry buffer
Looks like this function is not used too often - thus leak was discovered
by static analyzis (Coverity).
2011-08-11 20:49:33 +00:00
Zdenek Kabelac
ed463ccf51 Add memory pool locking functions
Adding debuging functionality to lock and unlock memory pool.

2 ways to debug code:
crc - is default checksum/hash of the locked pool.
      It gets slower when the pool is larger - so the check is only
      made when VG is finaly released and it has been used more then
      once.Thus the result is rather informative.

mprotect - quite fast all the time - but requires more memory and
           currently it is using posix_memalign() - this could be
	   later modified to use dm_malloc() and align internally.
           Tool segfaults when locked memory is modified and core
	   could be examined for faulty code section (backtrace).

Only fast memory pools could use mprotect for now -
so such debug builds cannot be combined with DEBUG_POOL.
2011-08-11 17:29:04 +00:00
Milan Broz
2836eabc9e Remove dev name prefix from dmsetup line output if major and minor is used. 2011-08-11 17:06:24 +00:00
Alasdair Kergon
2061c0ec24 Remove support for the original dm ioctl interface version 1.
Leave the basic support for multiple versions in case we have a new version
in future.
2011-08-09 17:56:47 +00:00
Zdenek Kabelac
b23975ee28 Add missing check for allocation failure
Static analyzer discovered missing check.
2011-08-04 17:56:11 +00:00
Peter Rajnoha
3c614ef1c1 Add support for systemd file descriptor handover in dmeventd.
Systemd preloads file descriptors for us and passes them in for
newly spawned daemon when using on-demand fifo (or socket)
based activation.

This patch adds checks for file descriptors preloaded by
systemd and uses them instead of opening the FIFOs again
to properly support on-demand FIFO-based activation.

(We'll change FIFOs to sockets soon - but still this
part of the code will stay almost the same.)
2011-07-28 13:06:50 +00:00
Peter Rajnoha
7d47d109b9 Add support for new oom killer adjustment interface (oom_score_adj).
The filename to adjust the oom score was changed in 2.6.36.
We should use oom_score_adj instead of oom_adj (which is still
there under /proc, but it's scheduled for removal in August 2012).

New oom_score_adj uses a range from -1000 (OOM_SCORE_ADJ_MIN,
disable oom killing) to 1000 (OOM_SCORE_ADJ_MAX).
2011-07-28 13:03:37 +00:00
Peter Rajnoha
5071d9eceb Add systemd unit files for dmeventd. 2011-07-28 12:54:28 +00:00
Alasdair Kergon
d3efe22fa2 Fix read-only identical table reload supression. 2011-07-24 23:59:03 +00:00
Alasdair Kergon
11853cd95a post-release 2011-07-08 19:57:32 +00:00
Alasdair Kergon
9f65343fa6 pre-release 2011-07-08 19:19:44 +00:00
Alasdair Kergon
3151e0995a Remove dev name prefix from dmsetup line output if exactly one dev requested. 2011-07-08 17:08:19 +00:00
Alasdair Kergon
ba45e1fdee Report internal error if suspending a device using an already-suspended dev.
This catches the recent pvmove problem trapping I/O between layers.
2011-07-02 01:17:09 +00:00
Alasdair Kergon
2243718fae Add framework for validation of ioctls. Doesn't do any checks yet.
dmsetup --checks
libdevmapper: dm_task_enable_checks()
lvm.conf: activation/checks=1
2011-07-01 14:09:19 +00:00
Alasdair Kergon
f96cf55d36 Add age filter to dmsetup udevcomplete_all to minimise concurrency problems. 2011-06-29 21:56:46 +00:00
Alasdair Kergon
0437bccc3c Move udev_only logic inside stacked node op code.
(We still need to treat add+readhead+del as a no-op.)
Rename udev_fallback to verify_udev_operations.
Rename --udevfallback to --verifyudev
2011-06-27 21:43:58 +00:00
Alasdair Kergon
f4249251cb Return immediately dm_lib_exit() if called more than once.
(Avoiding calling it twice would involve some untangling.)
Decrement the new suspended_counter if removing a suspended device.
2011-06-24 19:33:41 +00:00
Peter Rajnoha
b1db4dd13e Disable udev fallback and add --udevfallback option to dmsetup. 2011-06-17 14:55:51 +00:00
Alasdair Kergon
1840aa0974 Maintain a count of the number of suspended devices in libdevmapper
and use this for the LVM critical section logic.  Also report an error if
code tries to load a table while any device is known to be in the
suspended state.
(If the variety of problems these changes are showing up can't be fixed
before the next release, the error messages can be reduced to debug
level.)
2011-06-13 03:32:45 +00:00
Alasdair Kergon
83e797bc52 Fix 'pvs -o pv_all' to include label fields. (Also removed recursion.) 2011-06-12 19:49:40 +00:00
Alasdair Kergon
df390f1799 Major pvmove fix to issue ioctls in the correct order when multiple LVs
are affected by the move.  (Currently it's possible for I/O to become
trapped between suspended devices amongst other problems.

The current fix was selected so as to minimise the testing surface.  I
hope eventually to replace it with a cleaner one that extends the
deptree code.

Some lvconvert scenarios still suffer from related problems.
2011-06-11 00:03:06 +00:00
Milan Broz
fa380602cf Accept kernel version 3 (3.0-rc and similar). 2011-06-09 15:07:40 +00:00
Alasdair Kergon
20ffd91347 test 2011-04-29 19:05:11 +00:00
Alasdair Kergon
e93eb11d92 test 2011-04-29 19:01:59 +00:00
Alasdair Kergon
213e1a2113 test 2011-04-29 18:57:09 +00:00
Alasdair Kergon
a086d55ba8 post-release 2011-04-29 17:05:20 +00:00
Alasdair Kergon
c0a1ec237f pre-release 2011-04-29 16:12:21 +00:00
Alasdair Kergon
919ab56b6d pre-release clean-ups 2011-04-29 00:21:13 +00:00
Peter Rajnoha
71b29ddcc4 Require libudev >= 143 when compiling with udev support.
Old versions of libudev < 143 were experimental and unstable. Require recent
and stable versions only (version 143 is old enough anyway).
2011-04-22 11:56:41 +00:00
Zdenek Kabelac
197b5e6dc7 Word alignment for strings
Align strdup char* allocation just on 2 bytes.
It looks like wasting space to align strings on 8 bytes.
(Could be even 1byte - but for hashing it might eventually get better
perfomance - but probably hardly measurable).

TODO: check on various architectures it's not making any problems.
2011-03-30 12:57:03 +00:00
Zdenek Kabelac
b8bdd780d8 Fix 2 signess warnings reported by gcc
Replace int with unsigned counter.
Replace snprintf with dm_snprintf.
2011-03-30 12:14:36 +00:00
Zdenek Kabelac
36089b2236 Const warning fixes
With recent update of dm_report_field_string() API call to accept
completely const objects - we no longer need loose constness here
and keep it forwarding.
2011-03-29 21:49:18 +00:00
Alasdair Kergon
76c13d16eb Use hard-coded /dev/mapper/control details for 2.6.36+ kernels and simplify
associated code.  (Some obscure configurations that happened to work before
are no longer supported.)
2011-03-25 23:50:35 +00:00
Zdenek Kabelac
681858db90 Improve debug stack trace
dm_check_version reports log_error() - so use return_NULL.
2011-03-18 13:21:02 +00:00
Milan Broz
52a5cd31c4 Mitigate some warnings if running as non-root user.
LVM doesn't behave correctly if running as non-root user,
there is warning when it detects it.

Despite this, it produces many error messages, saying nothing.
See https://bugzilla.redhat.com/show_bug.cgi?id=620571

This patch fixes two things:
1) Removes eror message from device_is_usable() which has no
information value anyway (real warning is printed inside it).

2) it fixes device-mapper initialization, if we support
core dm module autoload and device node is present, it should
fail early and not try recreate existing and correct node.
(non-root == permission denied here)

N.B. In future code should support user roles, some more
drastic checks in code are probably contraproductive now.
2011-03-18 12:17:57 +00:00
Zdenek Kabelac
8b6ce11d02 Use void pointer instead of char for binary key
dm_hash binary functions takes void* key - so there is no need to cast
pointers to char* (also the hash key does not have trailing '\0').

This is slight API change, but presents no change for the API user side
it just allows to write code easier as the casting could be removed.
2011-03-10 12:48:40 +00:00
Zdenek Kabelac
e134ce7c3c Fix reading byte from char params[-1] position
When the ->params string is empty - memory access is made on the byte
before allocated buffer (catched by valgrind) - in the case it would
constain 0x20 - it would even overwrite this buffer.
So fix by checking len > 0 before doing such access.
Also slightly optimise this loop from repeated strlen call.
2011-03-08 22:43:19 +00:00
Peter Rajnoha
eb36643cb7 Lower severity of selabel_lookup and matchpathcon failure to log_debug. 2011-03-03 13:05:40 +00:00
Alasdair Kergon
11bffd7d25 Accept multiple mapped device names on many dmsetup command lines. 2011-03-02 02:44:56 +00:00
Alasdair Kergon
d0e3d474d1 Fix dm_udev_wait calls in dmsetup to occur before readahead display not after.
Include an implicit dm_task_update_nodes() within dm_udev_wait().
2011-03-02 00:29:57 +00:00
Alasdair Kergon
8f91593c25 Fix _create_and_load_v4 not to lose the --addnodeoncreate setting (1.02.62). 2011-03-01 23:27:06 +00:00
Mike Snitzer
7d9c99e8e7 Add inactive table query support for kernel driver >= 4.11.6 (RHEL 5.7). 2011-02-21 16:26:23 +00:00
Zdenek Kabelac
eb4188830e Add debug message for open_count failure
Report  open_count problem as debug.

Function using _node_has_closed_parents decides whether
it's error or could be ignored.
2011-02-18 16:13:56 +00:00
Zdenek Kabelac
2f321615f2 API change - support more const arg
As dm_report_field_string() doesn't modify content of data pointer,
it can be marked as const.

It's slight API change - but doesn't require any change on the user side
and supports wider range of arguments without const casting.
(i.e. we may use as paramater const lv struct this way:  &lv->name)
2011-02-18 14:38:47 +00:00
Alasdair Kergon
7ad6a7d911 post-release 2011-02-09 12:11:21 +00:00
Alasdair Kergon
db76c0d09e pre-release 2011-02-09 12:04:39 +00:00
Alasdair Kergon
0ea1e5c109 post-release 2011-02-04 22:46:18 +00:00
Alasdair Kergon
a74fe591c9 pre-release 2011-02-04 22:35:29 +00:00
Alasdair Kergon
6c7b95f281 pre-release 2011-02-04 22:07:43 +00:00
Milan Broz
2b29daaaa6 Suport DM_SECURE_DATA_FLAG.
It will be user for cryptsetup to ensure buffers are properly
wiped when sending sensitive data (key).
2011-02-04 16:08:11 +00:00
Peter Rajnoha
7fa7632dc7 Set DM_UDEV_DISABLE_OTHER_RULES_FLAG for suspended DM devices in udev rules.
This is to avoid any scanning and processing of DM devices while they are in
suspended state (e.g. a rename while the device is suspended - a CHANGE event
is generated!). Otherwise, any scanning in the rules could end up with locking
the calling process until the device is resumed and so we don't receive a
notification about udev rules completion until then (and that effectively
locks out the process awaiting the notification!).

However, we still keep 'disk' and any 'subsystem' related udev rules running.
We trust these and these should check themselves whether a device is suspended
or not, not trying to run any scanning if it is.
2011-01-28 11:41:51 +00:00
Zdenek Kabelac
4b79aeb0ea Initialize pool object for each row
Fix assert abort of dmsetup (when compiled with pool debug)
dmsetup splitname --nameprefixes --noheadings --rows gvg-a2

Move pool begin in the inner loop - otherwise it would using
already 'ended' pool object.
2011-01-25 21:51:30 +00:00
Alasdair Kergon
0825c244dd post-release 2011-01-10 14:51:33 +00:00
Alasdair Kergon
606d085835 pre-release 2011-01-10 14:28:17 +00:00
Zdenek Kabelac
b3c6850b1c Define DM_COOKIE_AUTO_CREATE
TODO: Use it also for already written code.
2011-01-10 13:42:31 +00:00
Peter Rajnoha
8d5391f1c3 Export DM_CONTROL_NODE_UMASK and use it while creating /dev/mapper/control. 2011-01-04 14:43:53 +00:00
Alasdair Kergon
c37f0c7d7c post-release 2010-12-21 21:08:51 +00:00
Alasdair Kergon
ad18cacfa9 pre-release 2010-12-21 01:08:29 +00:00
Zdenek Kabelac
303923fbf1 Use const char* const * for dm_regex_create()
Change API interface to accept even completely const array patterns.

This should present no change for libdm users and allows to pass
pattern arrays without cast to const char **.
2010-12-20 13:23:11 +00:00
Peter Rajnoha
7dfce0e467 Add new dm_prepare_selinux_context fn to libdevmapper and use it throughout.
Detect existence of new SELinux selabel interface during configure.
Use new dm_prepare_selinux_context instead of dm_set_selinux_context.

We should set the SELinux context before the actual file system object creation.
The new dm_prepare_selinux_context function sets this using the selabel_lookup
fn in conjuction with the setfscreatecon fn. If selinux/label.h interface
(that should be a part of the selinux library) is not found during configure,
we fallback to the original matchpathcon function instead.
2010-12-13 10:43:56 +00:00
Alasdair Kergon
122ba73eaf post-release 2010-12-06 22:13:10 +00:00
Alasdair Kergon
9d03132282 pre-release 2010-12-06 17:57:14 +00:00
Alasdair Kergon
ea7c621b0a Fix debug logging of derived flag LCK_CACHE in clvmd. 2010-12-06 17:37:09 +00:00
Alasdair Kergon
1415afcdba Fix memory leak when VG allocation policy in metadata is invalid.
Ignore unrecognised allocation policy found in metadata instead of aborting.
Fix another missing vg_release() in _vg_read_by_vgid.
2010-11-29 18:35:37 +00:00
Alasdair Kergon
663886b954 post-release 2010-11-22 18:37:56 +00:00
Alasdair Kergon
2151f044e8 pre-release 2010-11-22 14:25:22 +00:00
Alasdair Kergon
ef3d8e18d3 Fix _output_field crash from field_id free with DEBUG_MEM. (Phillip Susi) 2010-11-19 13:17:27 +00:00
Alasdair Kergon
ae1a833000 post-release 2010-11-09 02:58:06 +00:00
Alasdair Kergon
962e678174 pre-release 2010-11-08 19:37:40 +00:00
Peter Rajnoha
a83c7816e4 Allocate buffer for reporting functions dynamically to support long outputs.
Fix memory leak of field_id in _output_field function.

There's been a patch added recently to use dynamic allocation for metadata
tags buffer to remove the 4k limit (for writing metadata out). However, when
using reporting commands like vgs and lvs, we still need to fix libdm reporting
functions themselves to support such long outputs. So the buffer used in those
reporting functions is dynamic now.

The patch also includes a fix for field_id memory leak which was found in
the _output_field function.
2010-11-01 13:31:55 +00:00
Alasdair Kergon
779c11004a post-release 2010-10-25 16:38:20 +00:00
Alasdair Kergon
2aa06d73ca pre-release 2010-10-25 13:54:29 +00:00
Zdenek Kabelac
a636bccaba Use const pointer for return value of dm_basename
Fix return pointer to const as it is created from passed input const pointer.
2010-10-25 13:13:53 +00:00
Alasdair Kergon
57a8279442 Add --setuuid to dmsetup rename.
Add dm_task_set_newuuid to set uuid of mapped device post-creation. (pjones)
2010-10-15 01:10:27 +00:00
Alasdair Kergon
44a31a9c2f Speed up CRC32 calculations by using a larger lookup table.
Use -DDEBUG_CRC32 to revert to old function and check new one gives same result.
2010-09-27 19:09:34 +00:00
Alasdair Kergon
87368c35b9 pre-release 2010-09-24 16:24:57 +00:00
Alasdair Kergon
a171bb6e85 Track recursive filter iteration to avoid refreshing while in use. (2.02.56) 2010-09-22 01:36:13 +00:00
Alasdair Kergon
7dbfd06d99 post-release 2010-08-19 22:33:14 +00:00
Alasdair Kergon
523fad915b pre-release 2010-08-18 20:57:10 +00:00
Peter Rajnoha
88b97d8f30 Fix dm-mod autoloading logic to not assume control node is set correctly.
We can't rely on the fact that udev should prepare the node with right major
and minor number to trigger the module autoloading. We have to take into
account that the node could be missing or it could exist with improper
major and minor number assigned (e.g. from previous kernel versions in
an environment with static nodes and without udev). Make any corrections
if needed!
2010-08-18 13:11:56 +00:00
Alasdair Kergon
d1e8046f56 Various small cleanups and fixes related to monitoring. 2010-08-16 22:54:35 +00:00
Alasdair Kergon
470c18847d Remove superfluous NULL pointer tests before dm_free from dmeventd. 2010-08-16 18:19:46 +00:00
Peter Rajnoha
f069a14ca7 WHATS_NEW_DM 2010-08-16 11:22:08 +00:00
Peter Rajnoha
a6a66e7c83 Fix udev rules to support udev database content generated by older rules.
This can happen with older rules (without support for synthesized events)
that are still part of initrd while using new udev rules in the system itself.

The consequence was that new udev rules incorrectly assumed that not having
DM_UDEV_PRIMARY_SOURCE_FLAG set always means the uevent is synthesized and
inappropriate (device is still not properly activated) and so it should be
ignored. However, initrd is not updated automatically while updating the
libdevmapper/udev rules in the system and so we end up with the rules not
detecting and setting crucial parts in the initrd environment and the rules
in the system that rely on the information that should have been stored in
udev db (which is incorrect in this configuration, of course).

The overall consequence is that the update of libdevmapper/lvm2 without
regenerating the initrd could end up with a boot failure! Ignoring the event
means removing any existing symlinks in /dev!

To fix this, increase udev rules version to make a difference. So from now on,
mark rules without proper support for synthesized events as
DM_UDEV_RULES_VSN="1" and 2 (or higher) if that support is included.
2010-08-12 13:41:18 +00:00
Peter Rajnoha
b045f4fe9a Reinstate detection of inappropriate uevent with DISK_RO set and suppress it.
We still need to detect this one! We're not so strict with CHANGE events as
with the ADD events while applying filters in the rules so this one would
pass and it would process the rules prematurely (because it appears *before*
the actual CHANGE event used when resuming a DM device while setting read-only
state at the same time).
2010-08-12 13:07:08 +00:00
Peter Rajnoha
dc39d2a66e WHATS_NEW_DM 2010-08-11 13:12:31 +00:00
Peter Rajnoha
97df4e4675 Use built-in rules for device aliases: block/ < dm- < disk/ < mapper/ < other. 2010-08-03 13:39:27 +00:00
Zdenek Kabelac
0a89c2307e Wait for node creation before displaying debug info in dmsetup.
Readahead check needs to see created node - so wait till udev gets in sync.
2010-08-03 13:04:32 +00:00
Zdenek Kabelac
c8675c4933 Fix return status 0 for "dmsetup info -c -o help".
Solution returns success for _report_init when help is passed,
and caller needs to check for _report existance.
2010-08-03 12:56:00 +00:00
Peter Rajnoha
d87427446c Add check for kernel semaphore support and disable udev_sync if not available.
udev_sync feature requires semaphores (part of System V IPC) to be configured
in kernel (CONFIG_SYSVIPC). Check whether it is supported and if not, give
a warning message and disable udev synchronisation code automatically to
avoid any further error states and associated problems.

One should use the kernel with System V IPC support enabled or libdevmapper
with udev_sync feature disabled.
2010-08-03 07:56:03 +00:00
Alasdair Kergon
e9438785b1 post-release 2010-07-28 21:58:08 +00:00
Alasdair Kergon
cdb675c02b day+1 2010-07-28 11:49:42 +00:00
Alasdair Kergon
e12a5243c9 . 2010-07-28 10:44:29 +00:00
Alasdair Kergon
111c120e00 pre-release 2010-07-27 22:52:19 +00:00
Alasdair Kergon
09ba95b266 . 2010-07-27 21:57:37 +00:00
Fabio M. Di Nitto
8c4e8a185a Add dm_create_lockfile to libdm to handle pidfiles for all daemons.
Switch dmeventd to use dm_create_lockfile and drop duplicate code.
Allow clvmd pidfile to be configurable.
Switch cmirrord and clvmd to use dm_create_lockfile.
2010-07-13 13:51:01 +00:00
Zdenek Kabelac
14db805f14 Revert previous commit as it would return also for incorrect syntax. 2010-07-08 14:29:26 +00:00
Zdenek Kabelac
da038ccb4b Update for dmsetup 2010-07-08 13:35:55 +00:00
Peter Rajnoha
02adb0cd9d Use "nowatch" udev rule for known inappropriate devices.
For now, this is just a precaution. Normally, all the other (non-dm) rules
should check DM_UDEV_DISABLE_OTHER_RULES_FLAG and therefore avoid setting
any inotify watches as well. But let's make sure.

Support for final assignment of the "nowatch" rule (the use of ":=") will
appear in next udev release, v160. This should also work in previous udev
versions but the setting won't be sealed so any further OPTIONS="watch" will
always prevail there.

We may want to add more specific "nowatch" rules later if needed.
2010-07-07 11:22:46 +00:00
Alasdair Kergon
6aecef2c04 post-release 2010-07-07 02:37:28 +00:00
Alasdair Kergon
9a54c1a79b pre-release 2010-07-06 16:49:38 +00:00
Alasdair Kergon
8c54f1a949 Fix dmlosetup snprintf %llu compiler warning. 2010-07-05 22:56:31 +00:00
Alasdair Kergon
44cd0f4780 Add parentheses to some libdevmapper.h macro arguments. 2010-07-05 22:22:43 +00:00
Alasdair Kergon
db3c1ac1c8 Add printf format attributes to yes_no_prompt & dm_{sn,as}printf and fix a calle 2010-07-02 21:16:50 +00:00
Alasdair Kergon
22a8592301 Move dmeventd man page from install_lvm2 to install_device-mapper. (1.02.50) 2010-07-01 10:57:03 +00:00
Alasdair Kergon
c304818d39 post-release 2010-06-30 14:50:32 +00:00
Alasdair Kergon
4e11851795 pre-release 2010-06-30 14:04:15 +00:00
Alasdair Kergon
1ed3c7cc63 post-release 2010-06-23 19:35:11 +00:00
Alasdair Kergon
d2cd8375ff pre-release 2010-06-23 17:48:41 +00:00
Alasdair Kergon
85691c0afb In some C++ standards, typeof is not reserved. 2010-06-23 17:03:14 +00:00
Peter Rajnoha
acc70bce86 Fix udev rules to handle spurious events properly.
We can use DM_UDEV_PRIMARY_SOURCE_FLAG to identify the spurious events
and use it as an indication that the device has already been activated before
(and hence we can find this property in udev database).

WARNING: This change requires udev startup script to preserve udev database
from initrd. All the information stored there during activation of devices
is important for the initial "udevadm trigger --action=add" call that is
used in udev startup script. If not done this way, udev startup script needs
to define DM_UDEV_PRIMARY_SOURCE_FLAG=1 property for any ADD events it uses.
2010-06-23 17:00:32 +00:00
Milan Broz
c9c7d25c35 Remove C++ private keyword from headers.
Add extern C definition for libdevmapper, lvm2app and lvm2cmd.
2010-06-16 13:01:25 +00:00
Alasdair Kergon
a5e1488414 post-release 2010-06-07 10:25:43 +00:00