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Author SHA1 Message Date
Peter Rajnoha
e8bbcda2a3 Add lv_layout_and_type fn, lv_layout and lv_type reporting fields. 
The lv_layout and lv_type fields together help with LV identification.
We can do basic identification using the lv_attr field which provides
 very condensed view. In contrast to that, the new lv_layout and lv_type
fields provide more detialed information on exact layout and type used
for LVs.

For top-level LVs which are pure types not combined with any
other LV types, the lv_layout value is equal to lv_type value.

For non-top-level LVs which may be combined with other types,
the lv_layout describes the underlying layout used, while the
lv_type describes the use/type/usage of the LV.

These two new fields are both string lists so selection (-S/--select)
criteria can be defined using the list operators easily:
  [] for strict matching
  {} for subset matching.

For example, let's consider this:

$ lvs -a -o name,vg_name,lv_attr,layout,type
  LV                    VG     Attr       Layout       Type
  [lvol1_pmspare]       vg     ewi------- linear       metadata,pool,spare
  pool                  vg     twi-a-tz-- pool,thin    pool,thin
  [pool_tdata]          vg     rwi-aor--- level10,raid data,pool,thin
  [pool_tdata_rimage_0] vg     iwi-aor--- linear       image,raid
  [pool_tdata_rimage_1] vg     iwi-aor--- linear       image,raid
  [pool_tdata_rimage_2] vg     iwi-aor--- linear       image,raid
  [pool_tdata_rimage_3] vg     iwi-aor--- linear       image,raid
  [pool_tdata_rmeta_0]  vg     ewi-aor--- linear       metadata,raid
  [pool_tdata_rmeta_1]  vg     ewi-aor--- linear       metadata,raid
  [pool_tdata_rmeta_2]  vg     ewi-aor--- linear       metadata,raid
  [pool_tdata_rmeta_3]  vg     ewi-aor--- linear       metadata,raid
  [pool_tmeta]          vg     ewi-aor--- level1,raid  metadata,pool,thin
  [pool_tmeta_rimage_0] vg     iwi-aor--- linear       image,raid
  [pool_tmeta_rimage_1] vg     iwi-aor--- linear       image,raid
  [pool_tmeta_rmeta_0]  vg     ewi-aor--- linear       metadata,raid
  [pool_tmeta_rmeta_1]  vg     ewi-aor--- linear       metadata,raid
  thin_snap1            vg     Vwi---tz-k thin         snapshot,thin
  thin_snap2            vg     Vwi---tz-k thin         snapshot,thin
  thin_vol1             vg     Vwi-a-tz-- thin         thin
  thin_vol2             vg     Vwi-a-tz-- thin         multiple,origin,thin

Which is a situation with thin pool, thin volumes and thin snapshots.
We can see internal 'pool_tdata' volume that makes up thin pool has
actually a level10 raid layout and the internal 'pool_tmeta' has
level1 raid layout. Also, we can see that 'thin_snap1' and 'thin_snap2'
are both thin snapshots while 'thin_vol1' is thin origin (having
multiple snapshots).

Such reporting scheme provides much better base for selection criteria
in addition to providing more detailed information, for example:

$ lvs -a -o name,vg_name,lv_attr,layout,type -S 'type=metadata'
LV                   VG   Attr       Layout      Type
[lvol1_pmspare]      vg   ewi------- linear      metadata,pool,spare
[pool_tdata_rmeta_0] vg   ewi-aor--- linear      metadata,raid
[pool_tdata_rmeta_1] vg   ewi-aor--- linear      metadata,raid
[pool_tdata_rmeta_2] vg   ewi-aor--- linear      metadata,raid
[pool_tdata_rmeta_3] vg   ewi-aor--- linear      metadata,raid
[pool_tmeta]         vg   ewi-aor--- level1,raid metadata,pool,thin
[pool_tmeta_rmeta_0] vg   ewi-aor--- linear      metadata,raid
[pool_tmeta_rmeta_1] vg   ewi-aor--- linear      metadata,raid

(selected all LVs which are related to metadata of any type)

lvs -a -o name,vg_name,lv_attr,layout,type -S 'type={metadata,thin}'
LV           VG   Attr       Layout      Type
[pool_tmeta] vg   ewi-aor--- level1,raid metadata,pool,thin

(selected all LVs which hold metadata related to thin)

lvs -a -o name,vg_name,lv_attr,layout,type -S 'type={thin,snapshot}'
LV         VG   Attr       Layout     Type
thin_snap1 vg   Vwi---tz-k thin       snapshot,thin
thin_snap2 vg   Vwi---tz-k thin       snapshot,thin

(selected all LVs which are thin snapshots)

lvs -a -o name,vg_name,lv_attr,layout,type -S 'layout=raid'
LV           VG   Attr       Layout       Type
[pool_tdata] vg   rwi-aor--- level10,raid data,pool,thin
[pool_tmeta] vg   ewi-aor--- level1,raid  metadata,pool,thin

(selected all LVs with raid layout, any raid layout)

lvs -a -o name,vg_name,lv_attr,layout,type -S 'layout={raid,level1}'
  LV           VG   Attr       Layout      Type
  [pool_tmeta] vg   ewi-aor--- level1,raid metadata,pool,thin

(selected all LVs with raid level1 layout exactly)

And so on...
 2014-08-15 14:50:38 +02:00
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
559c003ee2 cleanup: reduce inclusion of unnecessary headers 
Remove those file which are not needed by .c files
or already include because the headers already needs them.
 2014-04-18 16:38:50 +02:00
Zdenek Kabelac
d4d8060ff4 cleanup: do include lvm headers in libdm build 
Relocate some defines from lvm headers to those
few shared between libdm and lib code.
 2014-04-08 11:00:15 +02:00
Zdenek Kabelac
30a81e5989 cleanup: self compilable headers 2013-12-12 13:28:19 +01:00
Zdenek Kabelac
462835faa0 Switch to return void 
List delete cannot fail, so there is no reason to test for error.
 2012-02-08 12:52:58 +00:00
Petr Rockai
542b0d0a65 Revert the #include changes. Need to fix this at the #include site for now, and 
eventually refactor the way we structure #includes in the all of the library.
 2011-07-18 14:34:33 +00:00
Petr Rockai
9c1f6bc985 Add a missing libdevmapper.h #include to lvm-types.h (for dm_list). 2011-07-18 13:24:48 +00:00
Zdenek Kabelac
040cdff1d4 Better const cast logic 
(although still gcc gives const violation warning)
 2011-04-08 14:14:57 +00:00
Zdenek Kabelac
ba96eb24fa Some const cleanups 
Minor const warning fixes and internal API updates.
 2010-12-20 13:19:13 +00:00
Zdenek Kabelac
64dff85ce4 Preserve const for char pointer 
Keep char pointers 'const'  (introduced with cling commit).
 2010-11-11 12:32:33 +00:00
Alasdair Kergon
eb82bd0525 Extend cling allocation policy to recognise PV tags (cling_by_tags). 
Add allocation/cling_tag_list to lvm.conf.
 2010-11-09 12:34:40 +00:00
Dave Wysochanski
ccb601a3cb Remove unnecessary / duplicate dm_list macros and functions. 
These are no longer used by anyone.  The dm_list defines are all in
libdevmapper.h and libdm/datastruct/list.c contains any function definitions.
There is some code in "old-tests" that still use this but this code is not
being maintained.

Thanks to Zdenek for spotting this.
 2009-11-25 20:44:07 +00:00
Dave Wysochanski
0589e19fd7 Update error return and comments for lvm_list_vg_names/uuids. 
The two liblvm functions that return a list of vgnames and vguuids use
cmd->mem to allocate the list.  Make it clear to the caller that this
memory will be freed when the LVM handle is freed.

Clean up and clarify the return value of the functions.  In the
case of a memory allocation error, add a couple log_errnos to the internal
code, and make it clear that memory allocation returns a NULL pointer.
If there are no VGs in the system, the list returned is an empty list.

Make a note of the fact that currently we return hidden VG names, how
these can be detected (always start with "#"), and that they should
not be used.


Author: Dave Wysochanski <dwysocha@redhat.com>
 2009-07-27 11:00:17 +00:00
Alasdair Kergon
e50d0e97b1 more missing bits 2008-11-04 14:57:06 +00:00
Alasdair Kergon
2c44337bd5 Right, a simple build (without options) is working again. 2008-11-03 22:14:30 +00:00
Alasdair Kergon
b7961bdb2f Improve file descriptor leak detection to display likely culprit and filename. 2008-08-01 19:51:27 +00:00
Alasdair Kergon
0b2a795ece make list_move consistent with other list fns 2008-04-10 19:14:27 +00:00
Dave Wysochanski
43aa463780 Add list_move() support function for list manipulation. 2008-03-26 16:20:54 +00:00
Alasdair Kergon
67cdbd7e4d Some whitespace tidy-ups. 2008-01-30 14:00:02 +00:00
Alasdair Kergon
c51b9fff19 Use stack return macros throughout. 2008-01-30 13:19:47 +00:00
Alasdair Kergon
9eea0107ba Fix strdup memory leak in str_list_dup(). 2007-09-17 16:02:46 +00:00
Alasdair Kergon
be6845999b Fix inconsistent licence notices: executables are GPLv2; libraries LGPLv2.1. 2007-08-20 20:55:30 +00:00
Jim Meyering
08c9ff434b Add "const" attributes where possible: first cut. 2007-08-07 09:06:05 +00:00
Dave Wysochanski
867c3249cb Fix warnings on x86_64 involving ptrdiff_t: 
config/config.c:493: warning: format '%d' expects type 'int', but argument 5 has type 'long int'

Modified original patch from Jim Meyering <jim@meyering.net>
 2007-04-26 16:40:46 +00:00
Alasdair Kergon
9e8a7c7dab remove inlines 2006-04-19 18:12:33 +00:00
Alasdair Kergon
8a2fc58645 Check for libsepol. 
Add some cflow & scope support.
Separate out DEFS from CFLAGS.
Remove inlines and use unique function names.
 2006-04-19 15:33:07 +00:00
Alasdair Kergon
2262b32057 Use hash, bitset, malloc, pool from libdevmapper. 2005-10-16 23:03:59 +00:00
Alasdair Kergon
7c2ef08367 Option for bitset memory allocation using malloc as well as pool. 2005-09-16 18:40:53 +00:00
Alasdair Kergon
60f13f01d2 Basic support for mirrors. 2005-06-01 16:51:55 +00:00
Alasdair Kergon
0888dc43cf Fix contiguous allocations with linear. 2005-05-11 16:46:59 +00:00
Alasdair Kergon
c44c04a6d7 %Zu->zu 2005-05-09 17:45:06 +00:00
Alasdair Kergon
06cc0dade2 more refinements 2005-04-06 15:21:28 +00:00
Alasdair Kergon
1128f56b1e Annotate, tidy and extend list.h. 2005-04-06 14:50:37 +00:00
Alasdair Kergon
374df1cf8e Extend hash functions to handle non-null-terminated data. 2004-06-18 15:08:22 +00:00
Alasdair Kergon
6606c3ae81 Update copyright notices. 2004-03-30 19:35:44 +00:00
Alasdair Kergon
5071196631 More str_list fns. 2004-03-08 15:23:01 +00:00
Alasdair Kergon
6e4b011dac Don't inline hash _find 2004-02-13 15:36:58 +00:00
Alasdair Kergon
ac21f47034 more str_list fns 2003-10-15 20:04:29 +00:00
Alasdair Kergon
13057fe53f str_list_del 2003-10-15 20:01:12 +00:00
Alasdair Kergon
aa37899857 Extract some common functions. 2003-09-17 20:35:57 +00:00
Alasdair Kergon
85c1926171 Improve segment merge/split code. 2003-09-15 18:22:50 +00:00
Alasdair Kergon
914c97239f Another sync point - numerous fixes & clean ups. 2003-07-04 22:34:56 +00:00
Alasdair Kergon
9a5e05a406 list_next 2003-05-06 12:01:13 +00:00
Alasdair Kergon
b896caa19b Improve build robustness. 2003-04-15 13:24:42 +00:00
Alasdair Kergon
34e0f798e3 size_t tidying 2003-04-02 19:11:23 +00:00
Alasdair Kergon
26e7f2e0c4 Tidy various pre-processing incl. making libdl optional. 2003-03-24 18:08:53 +00:00
Alasdair Kergon
e9ea1fb3bf Fix (rare) cache bug on machines with large /dev directories. 2003-01-10 19:14:01 +00:00
Alasdair Kergon
4970ebfb92 o Additional device/filter-level debugging messages + duplicate alias fix 
o 32/64-bit size_t fix (pjc)
 2003-01-08 16:41:22 +00:00
Alasdair Kergon
8ef2b021ed Default stripesize 64k & config file setting for it; 
Clear many compiler warnings (i386) & associated bugs - hopefully without
introducing too many new bugs:-)  (Same exercise required for other archs.)
Default compilation has optimisation - or else use ./configure --enable-debug
 2002-12-19 23:25:55 +00:00