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Commit Graph

849 Commits

Author SHA1 Message Date
Heinz Mauelshagen
55eaabd118 lvreduce/lvresize: add ability to reduce the size of a RaidLV
- support shrinking of raid0/1/4/5/6/10 LVs
- enhance lvresize-raid.sh tests: add raid0* and raid10
- fix have_raid4 in aux.sh to allow lv_resize-raid.sh
  and other scripts to test raid4

Resolves: rhbz1394048
2017-02-09 22:42:03 +01:00
Zdenek Kabelac
8a93cde75e mirror: relax internal error for a while
With recent commit d6a74025df using
INTERNAL_ERROR while cheking layer LV - it's been noticed mirror
logic currently doesn't do a correct thing during upconversion and
does a full-try instead of checking only allocator capabilities.
This leads to invalid usage of layer.

To keep existing code running before providing a fix, relax
INTERNAL_ERROR just an error and keep the 'code' running.

Once mirror code is fixed, these all check should be switched
to internal errors.
2017-01-06 12:45:07 +01:00
Zdenek Kabelac
d6a74025df debug: show proper error message for layer mismatch
Show proper internal error for failing command when there are some
inconsitencies in sizes of LV and its layer instead of rather
meaningless error code 5.

(Could be hit i.e. if user tried to 'resize' cached LV and then
uncache such LV.)
2017-01-05 15:54:14 +01:00
Zdenek Kabelac
3e9c03cbbc cache: resize is still unsupported
During rework of resize code this validation check
has been lost (in my resize branch). Upstream
is still not supporting resize of any cache type LV
so needs to be prevented.
2017-01-05 15:34:22 +01:00
Zdenek Kabelac
1f5dde38a7 cleanup: more use of lvseg_name
Use existing function lvseg_name().
2017-01-03 14:55:16 +01:00
Zdenek Kabelac
dc5bb12956 cleanup: use macros 2017-01-03 14:55:16 +01:00
Heinz Mauelshagen
95d68f1d0e lvchange: allow a transiently failed RaidLV to be refreshed
Add to commits 87117c2b25 and 0b8bf73a63 to avoid refreshing two
times altogether, thus avoiding issues related to clustered, remotely
activated RaidLV.  Avoid need to repeat "lvchange --refresh RaidLV"
two times as a workaround to refresh a RaidLV.  Fix handles removal
of temporary *-missing-* devices created for any missing segments
in RAID SubLVs during activation.

Because the kernel dm-raid target isn't able to handle transiently
failing devices properly we need
"[dm-devel][PATCH] dm raid: fix transient device failure processing"
as well.

test: add lvchange-raid-transient-failures.sh
      and enhance lvconvert-raid.sh

Resolves: rhbz1025322
Related:  rhbz1265191
Related:  rhbz1399844
Related:  rhbz1404425
2016-12-23 03:41:32 +01:00
Zdenek Kabelac
0c56eb8f43 cache: support cached origin for snapshot
Enable  'lvcreate/lvconvert -s' for cached LV.
and supported operations:

Create a snapshot of cached LV

Split/Join snapshot LV to cached origin LV.
2016-12-19 14:41:42 +01:00
Zdenek Kabelac
7db46c4a39 thin: reload external origin with last thin
External origin could be activated as stand-alone device.
When the last thin LV is removed, external origin is no longer
the external origin and it's layer property was dropped.

Ensure dm table is correct by reloading external origin
(when it's active).
2016-12-18 19:13:34 +01:00
Zdenek Kabelac
0f98d5c2e6 cleanup: use exiting function
Reuse existing code and some indent change.
2016-12-14 11:41:42 +01:00
Zdenek Kabelac
a8f5e1f274 cleanup: more lv_is_ usage 2016-12-13 22:07:52 +01:00
Heinz Mauelshagen
87117c2b25 lvchange: allow a transiently failed RaidLV to be refreshed
Enhance commit 0b8bf73a63 to refresh the top-level LV correctly
in case of a clustered, remotely activated RaidLV.

Related: rhbz1399844
2016-12-12 22:08:47 +01:00
Heinz Mauelshagen
0b8bf73a63 lvchange: allow a transiently failed RaidLV to be refreshed
In case any SubLV of a RaidLV transiently fails, it needs
two "lvchange --refresh RaidLV" runs to get it to fully
operational mode again.  Reason being, that lvm reloads all
targets for the RaidLV tree but doesn't resume the SubLVs
until after the whole tree has been reloaded in the first
refresh run.  Thus the live mapping table of the SubLVs
still point to an "error" mapping and the dm-raid target
can't retrieve any superblock from the MetaLV(s) in processing
the constructor during this preload thus not discovering the
again accessible SubLVs.  In the second run, the SubLV targets
map proper (meta)data, hence the constructor discovers those
fine now.

Solve by resuming the SubLVs of the RaidLV before
preloading the respective top-level RaidLV target.

Resolves: rhbz1399844
2016-11-30 22:57:54 +01:00
Zdenek Kabelac
108d9a63fd cleanup: indent 2016-11-25 15:01:28 +01:00
Zdenek Kabelac
1a4f13eb6e cleanup: add some dots and use display_lvname
Just some more VG/LV printing.
2016-11-25 15:01:27 +01:00
Zdenek Kabelac
1d58074d9f debug: more stacktrace corrections
Continue previous patch dropping some unneeded stack traces
after printed log_error/warn messages.
2016-11-25 14:58:28 +01:00
Zdenek Kabelac
4f39255dca cleanup: indent changes 2016-11-23 17:55:03 +01:00
Zdenek Kabelac
d05668c587 cleanup: use predefined macro for tmp image name 2016-11-23 17:55:03 +01:00
Zdenek Kabelac
a04b4bb89e cleanup: make this error an internal error
We shouldn't get here with wrong type.
2016-11-23 17:48:01 +01:00
Zdenek Kabelac
5fd5cfe061 cleanup: use display_lvname and msg cleanup
Use display_lvname in tracing messages.
Add some missing 'dots' to messages.
2016-11-23 17:48:01 +01:00
Zdenek Kabelac
ada5733c56 raid: faster rmeta clearing
Instead of clearing multiple rmeta device with sequential activation
process and waiting for udev for every _rmeta device separately,
activate all _rmeta devices first and then clear them and deactivate
afterwards.

Also update some tracing messages.

When anyhing goes wrong during clearing process, always try to
deactivate as much _rmeta devices as possible before fail.
2016-11-08 16:00:14 +01:00
Zdenek Kabelac
72abf692e5 debug: cleanup backtrace after log_error 2016-09-19 14:00:56 +02:00
Zdenek Kabelac
a029123679 debug: mention origin_only in message 2016-09-19 14:00:56 +02:00
Zdenek Kabelac
c2c2721d00 thin: enforce there is some free space in thin pool metadata
Unconditionally guard there is at least 1/4 of metadata volume
free (<16Mib) or 4MiB - whichever value is smaller.

In case there is not enough free space do not let operation proceed and
recommend thin-pool metadata resize (in case user has not
enabled autoresize, manual 'lvextend --poolmetadatasize' is needed).
2016-09-19 14:00:56 +02:00
Alasdair G Kergon
9c8c8fb63a alloc: Use --alloc normal for mirror logs.
The existing code doesn't understand that mirror logs should cling to
parallel LVs (like extending them) instead of avoiding them.

As a quick workaround to avoid lvcreate failures, hard-code
--alloc normal for mirror logs even if the rest of the allocation
used a stricter policy.

https://bugzilla.redhat.com/show_bug.cgi?id=1376532
2016-09-16 02:11:58 +01:00
Alasdair G Kergon
7ba7768111 alloc: Avoid PV tags too when avoiding parallel PV allocation.
Also add debug messages for parallel PVs.
2016-08-24 19:41:11 +01:00
Alasdair G Kergon
40a4f5f38f alloc: Record PV tags of parallel PVs in log. 2016-08-24 15:49:34 +01:00
Alasdair G Kergon
68adf2c199 alloc: Move _log_parallel_areas. 2016-08-24 15:47:38 +01:00
Alasdair G Kergon
30884208d4 raid: Move two functions. 2016-08-06 23:29:27 +01:00
Alasdair G Kergon
b66fa91c46 segtypes: Further segtype macros. 2016-08-05 14:00:40 +01:00
Heinz Mauelshagen
8f62b7bfe5 vg_validate: segment check enhancements for raids to catch bogus metadata
General RAID and RAID segment type specific checks are added
to merge.c. New static _check_raid_seg() is called on each segment
of a RaidLV (which have just one) from check_lv_segments().

New checks caught some unititialized segment members
which are addressed here as well:

- initialize seg->region_size to 0 in lvcreate.c for raid0/raid0_meta

- initialize list seg->origin_list in lv_manip.c
2016-07-27 18:17:29 +02:00
Zdenek Kabelac
5636bfd83d lvconvert: suppress zeroing warning when converting to thin
When volume was lvconvert-ed to a thin-volume with external origin,
then in case thin-pool was in non-zeroing mode
it's been printing WARNING about not zeroing thin volume - but
this is wanted and expected - so nothing to warn about.

So in this particular use case WARNING needs to be suppressed.

Adding parameter support for lvcreate_params.

So now lvconvert creates 'normal thin LV' in read-only mode
(so any read will 'return 0' for a moment)
then deactivate regular thin LV and reacreate in 'final R/RW' mode
thin LV with external origin and activate again.
2016-07-27 16:20:57 +02:00
Alasdair G Kergon
5af311ddd8 macros: Add lv_is_not_synced. 2016-07-14 14:21:01 +01:00
Zdenek Kabelac
deb6f6a06c cleanup: add some dots to messages 2016-07-13 21:52:14 +02:00
Zdenek Kabelac
e1112227d1 lvresize: fix zero size extension
Commit ca878a3426 changed behavior
or resize operation. Later the code has been futher changed
to skip fs resize completely when size of LV is already matching
and finaly at the most recent resize changeset for resize the
check for matching size has been eliminated as well so we ended
with a request call to resize fs to 0 size in some cases.

This commit reoders some test so the prompt happens just once before
resize of possibly 2 related volumes.

Also extra test for having LV already given size is added, and
whole metadata update is skipped for this case as the only
result would be an increment of seqno.

However the filesystem is still resized when requested,
so if the LV has some size and the resize is resolved to
the same size, the filesystem resize is called so in case FS
would not match, the resize will happen.
2016-07-13 21:52:04 +02:00
Heinz Mauelshagen
df5021a201 lv_manip: extension of raid0 causes livelock
A livelock occurs on extension in lv_manip when adjusting the region size,
which doesn't apply to any raid0/raid0_meta LVs (these don't have a bitmap).

Fix by prohibiting the region size adjustment on any such LVs.

- resolves rhbz1354604
2016-07-13 15:17:24 +02:00
Zdenek Kabelac
c0a505b0bb cleanup: drop unused header files 2016-07-04 17:40:24 +02:00
Alasdair G Kergon
d8c2677ab9 raid0: Add raid0_meta segment type. 2016-07-01 22:20:54 +01:00
Alasdair G Kergon
aed8bc8ae7 macros: Use is_power_of_2. 2016-06-30 17:59:44 +01:00
Alasdair G Kergon
686acce23f lvconvert: Conversions between striped and raid0. 2016-06-28 23:44:15 +01:00
Zdenek Kabelac
1bb7a155d1 lvresize: fixes for recent commit
Merging process and patch rework missed some bits - fix them.
2016-06-24 00:39:14 +02:00
Zdenek Kabelac
e5b7ebcdda cleanup: remove unused code 2016-06-23 14:59:29 +02:00
Zdenek Kabelac
5a919e4805 cleanup: remove unused sizearg variable
It's not used for anything now.
2016-06-23 14:59:29 +02:00
Zdenek Kabelac
4de15aa58d lvresize: return 0/1
Returning locking LV is no longer used from here, so return 1/0.
2016-06-23 14:59:29 +02:00
Zdenek Kabelac
7092c6ba10 lvresize: support more resized LVs
Add code to support more LVs to be resized through a same code path
using a single lvresize_params struct.
(Now it's used for thin-pool metadata resize,
next user will be snapshot virtual resize).

Update code to adjust percent amount resize for use_policies.

Properly activate inactive thin-pool in case of any pool resize
as the command should not 'deffer' this operation to next activation.
2016-06-23 14:59:27 +02:00
Zdenek Kabelac
d44e653fe1 lvresize: do not pass struct cmd
Use common API design and pass just LV pointer to lv_manip.c functions.
Read cmd struct via    lv->vg->cmd when needed.
Also do not try to return EINVALID_CMD_LINE error when we
have already openned VG - this error code can only be returned before
locking VG.
2016-06-23 14:57:09 +02:00
Zdenek Kabelac
5013999c8b lvresize: pass only needed params to _fsadm_cmd
Do not pass whole lvresize_params into _fsadm_cmd,
and give it only needed args.
2016-06-23 14:57:09 +02:00
Zdenek Kabelac
d30c2cec88 lvresize: check pvh list is vg->pvs
Instead of checking lp->argc for arg count, compare directly whether
passed pvh is vg->pvs.
2016-06-23 14:57:09 +02:00
Zdenek Kabelac
f45b689406 lvresize: update lvresize_params struct
Reorganise  struct lvresize_params to better fit lvresize needs to be
able to resize more then just a single LV.
2016-06-23 14:57:09 +02:00
Zdenek Kabelac
698082e678 cleanup: use display_lvname 2016-06-23 14:57:08 +02:00
Zdenek Kabelac
6268d0a080 cleanup: add dots to some messages
Add missing dots and one comment.
2016-06-23 14:57:08 +02:00
Zdenek Kabelac
3a4107c982 lvresize: drop extra sigint handling
yes_no_prompt() now already handles signal checking,
so drop redundant test.
2016-06-23 14:57:08 +02:00
Zdenek Kabelac
58d414f7f5 lvresize: move and extend resizefs ignoring check
Move check for 'ignoring' --resizefs option and extend check
for some more types.
2016-06-23 14:57:08 +02:00
Zdenek Kabelac
21cefd3f07 cleanup: use display_name 2016-06-01 17:40:26 +02:00
Zdenek Kabelac
090ecaabed debug: use display_lvname 2016-05-27 15:47:24 +02:00
Zdenek Kabelac
067c0a23e5 refresh: call resume after failing suspend
lv_refresh_suspend_resume() has escaped with fail ret code
after failing suspend and could have left many volumes in suspend state.

So always unconditionally call resume also  when suspend has failed.
2016-05-27 15:47:24 +02:00
Zdenek Kabelac
98b41db324 cleanup: drop cmd and constify lv for lv_refresh_suspend_resume()
Like with most other lv_manip* functions take just LV arg and get cmd
from embeded pointer when needed.
2016-05-27 15:47:24 +02:00
Zdenek Kabelac
e9ee2cb6b6 report: fix report copy_percent value
When mirror/raid called copy_percent function to return,
when 100% was supposed to be returned, wrong float 100.0 value
could have been reported back instead of dm_percent_t DM_PERCENT_100.

There is broken API somewhere, since the function here rely on
actively being modifid VG content even when doing 'lvs' operation.
(extents_copies)
2016-05-27 15:47:24 +02:00
Alasdair G Kergon
7fffcce924 raid: Revert _lv_extend_layered_lv non-raid0 area_multiple. 2016-05-24 14:27:05 +01:00
Alasdair G Kergon
498da2414b raid10: Fix new use of area multiple calc. 2016-05-24 00:41:09 +01:00
Alasdair G Kergon
b896f7de1e raid0: Standardise meta_areas checks before access. 2016-05-23 22:55:13 +01:00
Alasdair G Kergon
bf8d00985a raid0: Add raid0 segment type.
This remains experimental and quite restrictive so should only be used
for testing at this stage.  (E.g. lvreduce is not supported.)
2016-05-23 16:46:38 +01:00
Zdenek Kabelac
f6575ec824 cleanup: just switch error path
Check for error case in if() like we normally do.
Let code continue on success.
2016-05-05 23:52:06 +02:00
Zdenek Kabelac
d1ecbfa52d lvcreate: improve --chunksize support for cached volume.
Support parsing --chunksize option also when converting.
Now user can use cache pool created with i.e. 32K chunksize,
while in caching user can select 512K blocks.
Tool is supposed to validate cache metadata size is big enough
to support such chunk size. Otherwise error is shown.
2016-05-05 23:50:10 +02:00
Zdenek Kabelac
d3b15674df lvcreate: check for lv type and created segtype
When creating LV - in some case we change created segment type
(ATM for cache and snapshot) and we then manipulate with
lv segment according to 'lp' segtype.
Fix this by checking for proper type before accessing segment members.

This makes command like:

lvcreate --type cache-pool -L10 vg/cpool
lvcreate -H -L10 --cachesettings migtation_threshold=10000  vg/cpool

to pass since now tool correctly selects default cache policy.
2016-05-05 23:34:35 +02:00
Alasdair G Kergon
c76df666c9 raid: Use inherited tags when wiping rmeta.
If there's an activation volume_filter, it might not be possible
to activate the rmeta LVs to wipe them.  At least inherit any
LV tags from the parent LV while attempting this.
2016-04-29 19:49:21 +01:00
Alasdair G Kergon
01181a299e activate: Hide errors when snapshot merge delayed. 2016-04-21 22:14:10 +01:00
Zdenek Kabelac
51ed48f855 lvresize: fix stacked resize
Commit b64703401d cause regression
when handling stacked resize of pool metadata volume that would
be a raid LV.

Fix it by properly setting up size also for layer extension.
2016-03-15 23:21:16 +01:00
Peter Rajnoha
fa06c2263b cleanup: comment in the code for renaming historical LVs 2016-03-04 11:46:29 +01:00
Peter Rajnoha
27245d97e5 lvrename: support renaming historical logical volumes 2016-03-04 11:36:24 +01:00
Peter Rajnoha
fc628e92ba metadata: also look at historical LVs when checking LV name availability
Live LVs and historical LVs are in one namespace and the name needs to
be unique in whole VG.
2016-03-03 13:50:59 +01:00
Peter Rajnoha
53b064b9ae commands: lvremove: also process historical LVs 2016-03-03 13:50:59 +01:00
Peter Rajnoha
f833a6d074 metadata: add historical_glv_remove 2016-03-03 13:50:57 +01:00
Peter Rajnoha
8f47119f6f report: add new 'none' lv_layout and 'history' lv_role and mark historical LVs that way
Report proper values for historical LVs in lv_layout and lv_role fields.
Any historical LV doesn't have any layout anymore and the role is "history".

For example:

$ lvs -H -o name,lv_attr,lv_layout,lv_role vg/-lvol1
  LV     Attr       Layout     Role
  -lvol1 ----h----- none       public,history
2016-03-03 13:49:15 +01:00
Peter Rajnoha
a61bc70f62 metadata: add support for interconnection of thin pool LV segment with indirect origin
Add support for making an interconnection between thin LV segment and
its indirect origin (which may be historical or live LV) - add a new
"indirect_origin" argument to attach_pool_lv function.
2016-03-03 13:46:40 +01:00
Peter Rajnoha
eeaa5a4481 metadata: add add_glv_to_indirect_glvs and remove_glv_from_indirect_glvs
The add_glv_to_indirect_glvs is a helper function that registers a
volume represented by struct generic_logical_volume instance ("glv")
as an indirect user of another volume ("origin_glv") and vice versa -
it also registers the other volume ("origin_glv") as indirect_origin
of user volume ("glv").

The remove_glv_from_indirect_glvs does the opposite.
2016-03-03 11:26:51 +01:00
Peter Rajnoha
937f72b168 metadata: add get_or_create_glv and get_or_create_glvl
The get_or_create_glv is helper function that retrieves any existing
generic_logical_volume wrapper for the LV. If the wrapper does not exist
yet, it's created.

The get_org_create_glvl is the same as get_or_create_glv but it creates
the glv_list wrapper in addition so it can be added to a list.
2016-03-03 11:26:51 +01:00
Peter Rajnoha
e573eca554 metadata: add infrastructure to track LV history
Add new structures and new fields in existing structures to support
tracking history of LVs (the LVs which don't exist - the have been
removed already):

  - new "struct historical_logical_volume"
    This structure keeps information specific to historical LVs
    (historical LV is very reduced form of struct logical_volume +
     it contains a few specific fields to track historical LV
     properties like removal time and connections among other LVs).

  - new "struct generic_logical_volume"
    Wrapper for "struct historical_logical_volume" and
    "struct logical_volume" to make it possible to handle volumes
    in uniform way, no matter if it's live or historical one.

  - new "struct glv_list"
    Wrapper for "struct generic_logical_volume" so it can be
    added to a list.

  - new "indirect_glvs" field in "struct logical_volume"
    List that stores references to all indirect users of this LV - this
    interconnects live LV with historical descendant LVs or even live
    descendant LVs.

  - new "indirect_origin" field in "struct lv_segment"
    Reference to indirect origin of this segment - this interconnects
    live LV (segment) with historical ancestor.

  - new "this_glv" field in "struct logical_volume"
    This references an existing generic_logical_volume wrapper for this
    LV, if used. It can be NULL if not needed - which means we're not
    handling historical LVs at all.

  - new "historical_lvs" field in "struct volume group
    List of all historical LVs read from VG metadata.
2016-03-03 11:26:51 +01:00
Zdenek Kabelac
e04a0184cb cleanup: use lv_is_partial
Check for PARTIAL_LV flag in standard way.
2016-03-03 10:17:03 +01:00
Zdenek Kabelac
63c052b9e2 coverity: ensure thin_pool_seg is not NULL
thin_pool_seg being NULL would be an internal error.
2016-02-23 21:40:17 +01:00
Zdenek Kabelac
dbc71dc05e gcc: cleanup some sign warnings
When comparing unsigned with int, the comparision is made
as 'unsigned' type, so make it rather explicit which type
is being compared.
2016-02-23 12:25:25 +01:00
Zdenek Kabelac
cc23fdbd13 cleanup: update messages 2016-02-11 18:38:40 +01:00
Zdenek Kabelac
032cf8ade6 cleanup: relocate function to vg.c 2016-02-11 18:35:06 +01:00
Zdenek Kabelac
acf7815aca cleanup: stripes_extents
Simplify calculation of extents rounding needed for
segment size.

Segment size has to divisible by 'extent count' needed to contain
whole stripe. LVM currently does not support stripes across segment.

In case the stripe size is bigger then extent size,
require bigger rounding.
2016-02-11 18:35:06 +01:00
Zdenek Kabelac
3f916e8285 lvresize: check for given parameters
Check ac_ value as passed args.
Also drop reseting 'computed' values - since they get
assigned values later.
2016-02-11 18:35:06 +01:00
Zdenek Kabelac
fcbef05aae doc: change fsf address
Hmm rpmlint suggest fsf is using a different address these days,
so lets keep it up-to-date
2016-01-21 12:11:37 +01:00
Zdenek Kabelac
cc53a23d82 cleanup: join if/else 2016-01-21 12:11:37 +01:00
Zdenek Kabelac
7b5a8f61a7 cleanup: drop extra cmd passed arg
Use vg->cmd when needed cmd struct.
2016-01-20 13:44:47 +01:00
Zdenek Kabelac
b64703401d cleanup: relocate size assign
Directly set thin-pool size when thin data LV size changes.
2016-01-20 13:44:47 +01:00
Zdenek Kabelac
ca878a3426 cleanup: adjust once 2016-01-20 13:44:47 +01:00
Zdenek Kabelac
178cbb580a cleanup: update check function
Use display_lvname().
Use lv_is_lockd_sanlock_lv().
Order  'error' checks ahead of 'ignore' ones.
2016-01-20 13:44:47 +01:00
Zdenek Kabelac
4b9ae55a8d cleanup: shuffle check of threshold
Check first threshold and then policy_amount.
2016-01-20 13:44:47 +01:00
Zdenek Kabelac
c99ca6f430 cleanup: use log_print
Using log_print for ignoring message instead of log_warn.
Add some missing '.'.
2016-01-20 13:44:47 +01:00
Zdenek Kabelac
88400b599e lvmanip: fix last commit and drop else
In last commit when removing if() branch
this 'else' now has to be dropped.
2016-01-14 11:55:47 +01:00
Zdenek Kabelac
c9a813bff8 cleanup: spaces 2016-01-14 11:34:05 +01:00
Zdenek Kabelac
7d2b7f2bd8 cleanup: replace log_warn 2016-01-14 11:34:05 +01:00
Zdenek Kabelac
2567d03e95 cleanup: explicit prohibition for virtual segs
Internal _alloc_init() is only called from allocate_extents(),
which already does prevent usage of virtual segments.

So mark as internal error early and do not process it any further.
2016-01-14 11:34:05 +01:00
Zdenek Kabelac
4310dfd4e1 cleanup: simplier formula 2016-01-14 11:34:05 +01:00
Zdenek Kabelac
ebcfd09ba9 cleanup: more readable check 2016-01-14 11:34:05 +01:00
Zdenek Kabelac
753a496348 snapshot: relocate alloc_snapshot_seg
Move alloc_snapshot_seg to snapshot_manip and make it local static.
2016-01-14 11:34:05 +01:00