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Fix vg_read() error paths to properly release upon vg_read_error().
Note that in the iterator paths (process_each_*()), we release
inside the iterator so no individual cleanup is needed. However there
are a number of other places we missed the cleanup. Proper cleanup
when vg_read_error() is true should be calling vg_release(vg), since
there should be no locks held if we get an error (except in certain
special cases, which IMO we should work to remove from the code).
Unfortunately the testsuite is unable to detect these types of memory
leaks. Most of them can be easily seen if you try an operation
(e.g. lvcreate) with a volume group that does not exist. Error
message looks like this:
Volume group "vg2" not found
You have a memory leak (not released memory pool):
[0x1975eb8]
You have a memory leak (not released memory pool):
[0x1975eb8]
Author: Dave Wysochanski <dwysocha@redhat.com>
Sun May 3 13:12:28 CEST 2009 Petr Rockai <me@mornfall.net>
* Convert vgsplit to use vg_read_for_update.
Author: Petr Rockai <prockai@redhat.com>
Committer: Dave Wysochanski <dwysocha@redhat.com>
Sun May 3 13:06:14 CEST 2009 Petr Rockai <me@mornfall.net>
* Don't segfault in vg_release when vg->cmd is NULL.
Author: Petr Rockai <prockai@redhat.com>
Committer: Dave Wysochanski <dwysocha@redhat.com>
Sun May 3 12:54:28 CEST 2009 Petr Rockai <me@mornfall.net>
* Convert vgrename to vg_read_for_update.
Rebased 6/26/2009 - Dave W.
Author: Petr Rockai <prockai@redhat.com>
Committer: Dave Wysochanski <dwysocha@redhat.com>
Sun May 3 12:32:30 CEST 2009 Petr Rockai <me@mornfall.net>
* Rework the toollib interface (process_each_*) on top of new vg_read.
Rebased 6/26/09 by Dave W.
- Add skipping message to process_each_lv
- Remove inconsistent_t.
Sun May 3 11:40:51 CEST 2009 Petr Rockai <me@mornfall.net>
* Convert the straight instances of vg_lock_and_read to new vg_read(_for_update).
Rebased 6/26/09 by Dave W.
Sun May 3 11:40:51 CEST 2009 Petr Rockai <me@mornfall.net>
* Convert the straight instances of vg_lock_and_read to new vg_read(_for_update).
Author: Petr Rockai <prockai@redhat.com>
Committer: Dave Wysochanski <dwysocha@redhat.com>
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).
- validate the specified device is a PV and that it is in a VG
- automatically enable DEBUG (-d) if >= 4 -v instances were supplied
- preserve TMP_LVM_SYSTEM_DIR if it contains an lvm.conf and -d was
specified
- fix handling of special-case where PV is listed as "unknown device"
- more descriptive error when a PV is missing ("unknown device")
- unset LVM_SYSTEM_DIR if it was not originally set
- skip final vgscan if no changes were made
http://bugzilla.redhat.com/show_bug.cgi?id=500861
- Update list of fields/columns for each command (a few missing).
- Update list order to match "-o help" output (easier to verify field list)
- Add "{pv|vg|lv}_all" description.
- Move "-o help" sentence above column/field list.
New sample man page for lvs (pvs and vgs are similar):
-o, --options
Comma-separated ordered list of columns. Precede the list with ’+’ to append to the
default selection of columns instead of replacing it.
Use -o lv_all to select all logical volume columns, and -o seg_all to select all logical
segment columns.
Use -o help to view the full list of columns available.
Column names include: lv_uuid, lv_name, lv_attr, lv_major, lv_minor, lv_read_ahead,
lv_kernel_major, lv_kernel_minor, lv_kernel_read_ahead, lv_size, seg_count, origin, ori-
gin_size, snap_percent, copy_percent, move_pv, convert_lv, lv_tags, mirror_log, modules,
segtype, stripes, stripesize, regionsize, chunksize, seg_start, seg_start_pe, seg_size,
seg_tags, seg_pe_ranges, devices.
With --segments, any "seg_" prefixes are optional; otherwise any "lv_" prefixes are
optional. Columns mentioned in vgs (8) can also be chosen.
The lv_attr bits are:
E.g.
# vgscan
Parse error at byte 2360 (line 54): expected a value
Failed to load config file /etc/lvm/lvm.conf
You have a memory leak (not released memory pool):
[0x818c788] library (12 bytes)
...
status flag after reading the volume group. Thus, no need to set the flag
in vg_read() or clear it later before calling _vg_bad_status_bits().
Also, add back in the !lockingfailed() as part of the CLUSTERED flag check.
It's unclear why it was removed when the check was moved from
_vg_bad_status_bits() to inside _vg_lock_and_read().
There was an open question about the last check in the 'if' stmt for
lockingfailed() with a previous patch submitted. However, I would
defer that right now as it is a separate item and this patch should
be no functional change by including the !lockingfailed().
Petr acked this patch on 5/26 I just forgot to check it in.
Acked-by: Petr Rockai <prockai@redhat.com>
- it can support multiple segments, but note that
to work properly, correct IV (initialization vector)
offset parameter must be set properly.
Because most usage of IV start offset is when we join
several crypto segments together (so iv_offset is the segment
start offset), DM_CRYPT_IV_DEFAULT is defined to simplify
the process.
Function accepts the string in cipher agrument (already
including chainmode and iv type; chainmode and iv parameters are NULL
in this case) or user can provide split parameters which will
join into dm-crypt cipher specification "cipher-chainmode-iv".
All these parameters must be supplied in correct dm-crypt format.
