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Commit Graph

248 Commits

Author SHA1 Message Date
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
49521f4e56 cleanup: internal error for impossible path
Add 'default' path for impossible execution code path.
2014-05-26 22:57:28 +02:00
Zdenek Kabelac
2cc02c570e cleanup: constify pointers 2014-05-07 14:17:46 +02:00
Zdenek Kabelac
bcd6deea18 coverity: ignore ret val
Since we intentionaly do not want to check them,
cast result values to void.
2014-05-07 14:17:12 +02:00
Alasdair G Kergon
3f0f558786 dev-cache: Improve open device check messages. 2014-04-04 01:39:42 +01:00
Petr Rockai
d5682ccbac lvm-wrappers: Remove spurious #include <libudev.h>. 2014-04-01 15:26:26 +02:00
Zdenek Kabelac
68d13b2517 dev-cache: fix mem corruption on refresh context
When lvm2 command works with clvmd and uses locking in wrong way,
it may 'leak' certain file descriptors in opened (incorrect) state.

dev_cache_exit then destroys memory pool of cached devices, while
_open_devices list in dev-io.c was still referencing them if they
were still opened.

Patch properly calls _close() function to 'self-heal' from this
invalid state, but it will report internal error (so execution
with abort_on_internal_error causes immediate death). On the
normal 'execution', error is only reported, but memory state is
corrected, and linked list is not referencing devices from
released mempool.

For crash see: https://bugzilla.redhat.com/show_bug.cgi?id=1073886
2014-03-25 11:22:57 +01:00
Zdenek Kabelac
c595b20e56 dev-swap: use SECTOR_SHIFT 2014-03-22 20:43:05 +01:00
Zdenek Kabelac
936bfeb8de dev-swap: detect swap signature on devices smaller then 2MB
Smallest supported size for swap device is 40KB, however current
test skipped devices smaller then 4096 sectors (2MB).

Since page is in bytes, convert it to sectors before comparing
with device size (in sectors).
2014-03-22 20:36:14 +01:00
Zdenek Kabelac
7a595d7388 makefiles: use BLKID/UDEV_CFLAGS properly
blkid.h needs BLKID_CFLAGS
Do not add UDEV_CFLAGS everywhere and use it only when needed.
2014-03-06 17:30:06 +01:00
Zdenek Kabelac
710c0df68a cleanup: reorder commonly available devs in system to the front
Just shorting strcmp....
2014-02-24 21:13:35 +01:00
Zdenek Kabelac
e5d59d9618 cleanup: use string constant with '_' 2014-02-11 19:00:06 +01:00
Peter Rajnoha
ed166a3b1d wiping: wipe DM_snapshot_cow signature without prompt in newly created LVs
The libblkid can detect DM_snapshot_cow signature and when creating
new LVs with blkid wiping used (allocation/use_blkid_wiping=1 lvm.conf
setting and --wipe y used at the same time - which it is by default).

Do not issue any prompts about this signature when new LV is created
and just wipe it right away without asking questions. Still keep the
log in verbose mode though.
2014-02-10 13:28:13 +01:00
Zdenek Kabelac
7786443530 devices: support zvol
Support partitions on ZFS zvol.
Requested via https://bugzilla.redhat.com/show_bug.cgi?id=913597

Author: hakimian@aha.com
2014-01-28 10:33:29 +01:00
Peter Rajnoha
2b9d25133e wiping: issue error if libblkid detects signature and fails to return offset/length
We need both offset and length when trying to wipe detected signatures.
The libblkid can fail so it's good to have an error message issued for
this state instead of being silent (libblkid does not issue any error
messages here). We just issued "stack" here before but that was not
quite useful if some error occurs...
2014-01-22 16:29:52 +01:00
Peter Rajnoha
cb595a5a13 coverity: check return value of dev_close in dev_get_block_size() 2014-01-22 16:20:09 +01:00
Peter Rajnoha
f270bbd442 device: if BLKPBSZGET is unavailable, try to use BLKSSZGET with fallback to 512b 2013-12-18 13:52:01 +01:00
Zdenek Kabelac
3c818c8946 device: if BLKPBSZGET is unavailable, enforce 512
If there is no define for BLKPBSZGET - we have hard time how to
decrypt physical block size - we can't use here block_size,
since this is usually 4k while we need to use 512b.

FIXME: find some better way, until that enforce value 512.
Eventually we could also try to put in:

+#ifndef BLKPBSZGET
+# define BLKPBSZGET _IO(0x12,123)
+#endif

but this will still not work well on old kernels.
2013-12-18 10:52:09 +01:00
Peter Rajnoha
3652083f38 device: use BLKPBSZGET for physical block size only if the op is available, otherwise use logical block size
Older kernels < 2.6.32 don't have BLKPBSZGET defined.
2013-12-17 15:17:28 +01:00
Peter Rajnoha
32080c4ff7 device: add physical block size info and make sure VG extent size >= PV's phys. block size 2013-12-12 15:02:36 +01:00
Zdenek Kabelac
fd0068a66e cleanup: remove unused variable
Recent commit made this variable unused
2013-12-12 13:59:39 +01:00
Zdenek Kabelac
6c0e44d5a2 dev-cache: skip double stat() call on each _insert
When the device is inserted in dev_name_confirmed() stat() is
called twice as _insert() has it's own stat() call.

Extend _insert() parameter with struct stat* - which could be used
if it has been just obtained.  When NULL is passed code is
doing its own stat() call as before.
2013-12-12 13:42:28 +01:00
Zdenek Kabelac
1c2cc2f794 cleanup: remove duplicate code
As dev_name_confirmed() has check for DEV_REGULAR
remove this duplicated extra check prior its call.
2013-12-12 13:28:19 +01:00
Zdenek Kabelac
30a81e5989 cleanup: self compilable headers 2013-12-12 13:28:19 +01:00
Zdenek Kabelac
7baf411c97 dev-cache: return success when ignoring dirs
When there is no failure from the insert operation itself,
just dirs and links are skipped - return success.
2013-12-05 11:17:37 +01:00
Peter Rajnoha
6a1957badc pvcreate: do not issue warning about any existing PV
If we're calling pvcreate on a device that already has a PV label,
the blkid detects the existing PV and then we consider it for wiping
before we continue creating the new PV label and we issue a warning
with a prompt whether such old PV label should be removed. We don't
do this with native signature detection code. Let's make it consistent
with old behaviour.

But still keep this "PV" (identified as "LVM1_member" or "LVM2_member"
by blkid) detection when creating new LVs to avoid unexpected PV label
appeareance inside LV.
2013-11-28 13:14:46 +01:00
Peter Rajnoha
eaa23d3273 wiping: add support for blkid wiping
This is actually the wipefs functionailty as a matter of fact
(wipefs uses the same libblkid calls).

libblkid is more rich when it comes to detecting various
signatures, including filesystems and users can better
decide what to erase and what should be kept.

The code is shared for both pvcreate (where wiping is necessary
to complete the pvcreate operation) and lvcreate where it's up
to the user to decide.

The verbose output contains a bit more information about the
signature like LABEL and UUID.

For example:
  raw/~ # lvcreate -L16m vg
  WARNING: linux_raid_member signature detected on /dev/vg/lvol0 at offset 4096. Wipe it? [y/n]

or more verbose one:
  raw/~ # lvcreate -L16m vg -v
  ...
     Found existing signature on /dev/vg/lvol0 at offset 4096: LABEL="raw.virt:0" UUID="da6af139-8403-5d06-b8c4-13f6f24b73b1" TYPE="linux_raid_member" USAGE="raid"
WARNING: linux_raid_member signature detected on /dev/vg/lvol0 at offset 4096. Wipe it? [y/n]

The verbose output is the same output as found in blkid.
2013-11-27 15:49:15 +01:00
Peter Rajnoha
03c941a4ca device: cleanup signature wiping functions
The wipe_known_signatures fn now wraps the _wipe_signature fn that is called
for each known signature (currently md, swap and luks). This patch makes the
code more readable, not repeating the same sequence when used anywhere in the
code. We're going to reuse this code later...
2013-11-27 12:56:58 +01:00
Zdenek Kabelac
d079c81ab4 dev-type: use text format as direct arg for printf
Put common printf() case into a function and use
the string with text format as direct arg to make
the compile time validation of args easier and
code shorter.

Switch log_error() to log_warn(), since 'return 0'
doesn't cause any failure here.
2013-11-22 21:00:54 +01:00
Petr Rockai
a5bb1b48ee dev-cache.c: Make dev_name a little more robust. 2013-11-17 22:34:56 +01:00
Alasdair G Kergon
527db4645f gcc: replace #ifdef linux with __linux__ 2013-11-13 13:56:29 +00:00
Alasdair G Kergon
7bed6d1263 filters: Add NVM Express (nvme). 2013-10-09 20:08:07 +01:00
Alasdair G Kergon
97ba18f4cb filters: Add bcache.
N.B. Using bcache devices as PVs is still experimental.
Problems should be reported to the appropriate mailing lists.
2013-09-16 16:56:55 +01:00
Alasdair G Kergon
80bcdb93ff filters: check for mpath before opening devs
Split out the partitioned device filter that needs to open the device
and move the multipath filter in front of it.

When a device is multipathed, sending I/O to the underlying paths may
cause problems, the most obvious being I/O errors visible to lvm if a
path is down.

Revert the incorrect <backtrace> messages added when a device doesn't
pass a filter.

Log each filter initialisation to show sequence.

Avoid duplicate 'Using $device' debug messages.
2013-08-13 23:26:58 +01:00
Peter Rajnoha
f0ab6c33a9 dev-type: dev_get_primary_dev default error code 0, not -1 2013-07-19 15:26:53 +02:00
Peter Rajnoha
eeb7b0f7fa config: add profile arg to find_config_tree_node 2013-07-02 15:19:09 +02:00
Peter Rajnoha
c9e8e7c235 dev-type: dev_get_primary_dev: fix ret value if dev is a partition and we used sysfs 2013-06-23 12:39:35 +02:00
Peter Rajnoha
21f1062ef8 dev-type: add/fix references for dev_types in non-linux case 2013-06-17 15:17:15 +02:00
Zdenek Kabelac
17a3ddf89e cleanup: drop unused headers
Drop heades which do not provide any used symbols.
2013-06-16 00:07:32 +02:00
Peter Rajnoha
ebf0898d69 dev-type: refine dev_get_primary_dev return codes and add more comments 2013-06-12 14:33:28 +02:00
Peter Rajnoha
8bade9bfea cleanup: remove old and unused code to detect partition types
This part of the code has not been used for ages, if ever.
If needed anytime in future, we should use some library
instead - libblkid?
2013-06-12 13:14:49 +02:00
Peter Rajnoha
65d0089c64 dev-type: dev_get_primary_dev fn: use dev_types and provide better return codes
The dev_get_primary_dev fn now returns:

  0 if the dev is already a primary dev
  1 if the dev is a partition, primary dev is returned in "result" (output arg)
  -1 on error

This way, we can better differentiate between the error state
and the state in which the dev supplied is not a partition
in the caller (this was same return value before).

Also, if we already have information about the device type,
we can check its major number against the list of known device
types (cmd->dev_types) directly, so we don't need to go through
the sysfs - we only check the major:minor pair which is a bit
more straightforward and faster. If the dev_types does not have
any info about this device type, the code just fallbacks to
the original sysfs interface to get the partition info.
2013-06-12 12:14:11 +02:00
Peter Rajnoha
c6f48b7c1a refactor: make device type recognition code common for general use
Changes:

- move device type registration out of "type filter" (filter.c)
to a separate and new dev-type.[ch] for common use throughout the code

- the structure for keeping the major numbers detected for available
device types and available partitioning available is stored in
"dev_types" structure now

- move common partitioning detection code to dev-type.[ch] as well
together with other device-related functions bound to dev_types
(see dev-type.h for the interface)

The dev-type interface contains all common functions used to detect
subsystems/device types, signature/superblock recognition code,
type-specific device properties and other common device properties
(bound to dev_types), including partitioning support.

- add dev_types instance to cmd context as cmd->dev_types for common use

- use cmd->dev_types throughout as a central point for providing
information about device types
2013-06-12 12:08:56 +02:00
Peter Rajnoha
1778d34cef refactor: move lib/device/device.c -> lib/device/dev-type.c 2013-06-12 11:54:37 +02:00
Peter Rajnoha
22b0f3573e refactor: move lib/filters/device-types.h -> lib/device/device-types.h 2013-06-12 11:54:36 +02:00
Peter Rajnoha
657abb08e0 cleanup: use libdm's dm_sysfs_dir() for sysfs directory throughout
And remove superfluous cmd->sysfs_dir and
set_sysfs_dir_path/sysfs_dir_path fn from lvm-globals.[ch].
2013-06-12 11:44:58 +02:00
Zdenek Kabelac
f05c5a97c3 filters: dump filter returns error code
Add int return value from dump() function.
Report stack for error case.
Update composable filter.
2013-06-03 08:42:25 +02:00
Zdenek Kabelac
5467a3b2b7 filters: update composable filter
Last commit made dump filter only partially composable.
Add remaining functionality and also support composable wipe,
which is needed, when i.e. vgscan needs to remove cache.

(in release fix)
2013-06-02 22:46:06 +02:00
Petr Rockai
e7878da921 filters: toplevel filter not persistent
Add a generic dump operation to filters and make the composite filter call
through to its components. Previously, when global filter was set, the code
would treat the toplevel composite filter's private area as if it belonged a
persistent filter, trying to write nonsense into a non-sensical file.
Also deal with NULL cmd->filter gracefully.
2013-06-02 00:48:58 +02:00
Zdenek Kabelac
39705ed201 cleanup: test for -1 value for lseek error
Error is defined as -1.
Yet it seems we are unable to seek to 0 for devices > 8Exabytes.
2013-05-30 17:26:42 +02:00