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Commit Graph

39 Commits

Author SHA1 Message Date
Alasdair G Kergon
559ca8bc65 dmsetup: Report timestamps of ioctls with -vvv.
If enabled, record timestamp immediately after the ioctl() returns.
2015-08-05 08:28:35 +01:00
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
Alasdair G Kergon
42e07d2bce dmsetup: Support remove --deferred.
This patch adds a new flag --deferred to dmsetup remove. If this flag is
specified and the device is open, it is scheduled to be deleted on
close.

struct dm_info is extended.

The existing dm_task_get_info() is converted into a wrapper around the
new version dm_task_get_info_with_deferred_remove() so existing binaries
can still use the old smaller structure.

Recompiled code will pick up the new larger structure.

From: Mikulas Patocka <mpatocka@redhat.com>
2014-08-16 00:34:48 +01:00
Zdenek Kabelac
52ab15b2d0 cleanup: use unsigned type for command
Keep command unsigned (as _IOWR() produces them).
2014-07-02 10:45:43 +02:00
Peter Rajnoha
a621795a3c libdm: add mangling support for dm_task_set_uuid
Also, add a new field to struct dm_task called "mangled_uuid" that
will store mangled form of uuid if it differs from original uuid.
2012-10-10 17:16:13 +02:00
Peter Rajnoha
55761e14af Mangle device name on dm_task_set_name/newname call if necessary.
If dm_task_set_name/newname is called, the name provided will be
automatically translated to correct encoded form with the hex enconding
so any character not on udev whitelist will be mangled with \xNN
format where NN is hex value of the character used.

By default, the name mangling mode used is the one set during
configure with the '--with-default-name-mangling' option.
2012-02-15 11:27:01 +00:00
Zdenek Kabelac
660a42bc78 Add internal expected_errno dm_tast var
Certain errno codes could be expected in some situations thus
add experimental support for them.

When expected errno is set after ioctl error - function skips error
printing and exits succefully.

Currently only useful for thin pool messages.
2011-10-19 16:36:01 +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
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
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
Zdenek Kabelac
880507498a Add --addnodeonresume, --addnodeoncreate
Add new function dm_task_set_add_node() to select between 2 types
of node creation in device directory.

DM_ADD_NODE_ON_RESUME is now default and ensures node is created on
resume. Old original behavior is accessible with DM_ADD_NODE_ON_CREATE.
In this case node would be created during dmsetup create --notable.

For the user 2 new options for dmsetup create are added:
[{--addnodeonresume | --addnodeoncreate }]

Properly working node creation on resume is needed for proper operation
stacking and ability to correctly check in which state the device should
after whole udev transation.
2011-02-04 19:33:53 +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
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
9abf5e70be Add support for querying a device's inactive table.
Currently this data is invisible to userspace.
Requires dm >= 4.16 (likely to be in linux 2.6.33).
2009-11-06 00:43:08 +00:00
Alasdair Kergon
a74be32bf6 Manage without dm_udev_cleanup? 2009-08-03 18:01:45 +00:00
Milan Broz
6391d03f54 Fix backward compatibility for major:minor query.
Is an application uses query and set major:minor
to device, it should not fallback to default major by default.

Add new function whoich allows that (and use it in lvm2).
2009-06-17 20:55:24 +00:00
Alasdair Kergon
bb875bb9e4 Only resume devices in dm_tree_preload_children if size changes. 2008-09-18 18:34:53 +00:00
Alasdair Kergon
52b8440916 add read_ahead functions to library and dmsetup --readahead
(Not live yet.)
2007-11-27 20:57:05 +00:00
Alasdair Kergon
147d5faccf Fix inconsistent licence notices: executables are GPLv2; libraries LGPLv2.1. 2007-08-21 16:26:07 +00:00
Alasdair Kergon
9dd3071462 noflush code fixes: missing debug log; non-standard variable name 2006-10-12 17:29:05 +00:00
Alasdair Kergon
f916f0a7b7 Add suspend noflush support.
Add basic dmsetup loop support.
2006-10-12 15:42:25 +00:00
Alasdair Kergon
6ef080af04 A setgeometry implementation. [untested] 2006-02-20 23:55:58 +00:00
Alasdair Kergon
ec289b64b9 Drop leading zeros from dm_format_dev.
Suppress attempt to reload identical table.
2005-11-22 18:43:12 +00:00
Alasdair Kergon
72a444276f Add dmsetup --nolockfs support for suspend/reload.
Requires kernel patches to have any effect.
Library version incremented.
2005-10-04 20:12:32 +00:00
Alasdair Kergon
8e2dd0dfb2 Add dm_task_no_open_count() to skip getting open_count. 2005-01-12 22:10:14 +00:00
Alasdair Kergon
6b70629cc9 Configuration-time option for setting uid/gid/mode for /dev/mapper nodes. 2005-01-05 22:00:40 +00:00
Alasdair Kergon
62cec9b225 Support new target message ioctl. 2004-06-08 20:34:40 +00:00
Alasdair Kergon
8b67f40de2 Update copyright messages. 2004-03-30 19:08:57 +00:00
Alasdair Kergon
5507448b95 Up interface to major version number 4. 2003-04-30 13:48:53 +00:00
Alasdair Kergon
8563ab0304 Event number support. 2003-04-29 11:34:23 +00:00
Alasdair Kergon
12428fceee Allow device major to be set too. 2003-04-02 19:03:00 +00:00
Alasdair Kergon
8aa577ad34 Proposed changes to the ioctl interface to fix alignment issues on some
architectures and specify an explicit width for every numeric field.
2003-03-28 18:58:59 +00:00
Alasdair Kergon
661c2f2dca Prepare for ioctl version number change. 2003-01-21 21:27:36 +00:00
Alasdair Kergon
40c44db720 Fix includes after DM_DIR definition move. 2002-11-14 14:44:42 +00:00
Alasdair Kergon
ad21a5585c Let dmsetup store the uuid on device creation. 2002-03-11 22:44:36 +00:00
Alasdair Kergon
1ed34e88aa o Add rename support to dmsetup.
o Add support to use specified minor number to library and dmsetup.
2002-01-11 12:12:46 +00:00
Alasdair Kergon
e3851db216 Support the renaming of active mapped devices (ioctl interface only). 2002-01-10 23:29:16 +00:00
Joe Thornber
f17673f1d0 o Added -r, --read-only switch to dmsetup for use with create and reload. 2002-01-03 10:39:21 +00:00
Alasdair Kergon
638754e559 Various fixes & restructure to extract common code. 2001-12-05 16:41:52 +00:00