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Commit Graph

69 Commits

Author SHA1 Message Date
Jonathan Brassow
8b9eb95ea9 cache: Clean-up error message.
It is not an internal error message to report to the user that they
cannot create a cache LV on top of a cache LV.  It is simply not
supported yet.
2014-08-24 19:44:37 -05:00
Peter Rajnoha
8eba33510f cache+thin: add lv_is_{cache,thin}_origin fn to identify origin LVs 2014-08-15 13:28:43 +02:00
Zdenek Kabelac
d7d81e1157 cleanup: show better messages 2014-07-22 22:41:40 +02:00
Zdenek Kabelac
894eda4707 thin and cache: unify pool common code
Fix get_pool_params to only read params.
Add poolmetadataspare option to get_pool_params.
Move all profile code into update_pool_params.
Move recalculate code into pool_manip.c
2014-07-22 22:41:38 +02:00
Zdenek Kabelac
f5d6c4b0f3 cache: use get_cache_mode for validation
Use a single function to validate cache mode arg
and set DM_ feature flags.
2014-07-17 16:16:45 +02:00
Zdenek Kabelac
f7d6614061 cache: warn about metadata size limits
Cache pools are similar as with thin pools.
Add (needs %s) - since cache has currently
a bit strange need for extra few kb over
our default 4M extent size so make it more obvious.
2014-07-11 13:31:19 +02:00
Zdenek Kabelac
597de5c807 cleanup: use insert_layer_for_lv implicit rename
There is implicit rename for certain layered device.
Do it now for _tdata, _cdata and _corig.

TODO: use better API here...
2014-06-18 15:00:18 +02:00
Jonathan Brassow
962a40b981 cache: Properly rename origin LV tree when adding "_corig"
When creating a cache LV with a RAID origin, we need to ensure that
the sub-LVs of that origin properly change their names to include
the "_corig" extention of the top-level LV.  We do this by first
performing a 'lv_rename_update' before making the call to
'insert_layer_for_lv'.
2014-06-16 18:15:39 -05:00
Zdenek Kabelac
9845f8c767 clenaup: drop unused assigns 2014-05-07 14:17:46 +02:00
Zdenek Kabelac
d88fab8d3a cleanup: drop uneeded headers 2014-05-07 14:17:45 +02:00
Zdenek Kabelac
48a8cf28f7 cache: avoid expression overflow
Cast data_extents to 64bit so calculation is in 64b arithmetic.
2014-05-07 14:14:54 +02:00
Zdenek Kabelac
c2876ee1c9 cache: enforce local exlusive activation
For cache flushing local exlusive activation is needed.
2014-04-01 21:29:28 +02:00
Zdenek Kabelac
9cb053339e cleanup: cache updates messages
Passing non cached device is an internal error.
Print messages at non-error level.
Shorten sleep delay for cache flush.
2014-04-01 20:54:09 +02:00
Zdenek Kabelac
e2ea3cd7ba cleanup: cache use const char policy
Policy should be const char pointer.
2014-04-01 20:54:09 +02:00
Zdenek Kabelac
d3004479cc cache: use remove_layer_from_lv
Since the usability problem were fixed, we can use this function.
Cleanup orphan LVs with TEMPORARY flags
(reduces couple blkid error reports, but couple of them
is still left...)
2014-04-01 20:17:10 +02:00
Jonathan Brassow
0912cf67aa cache: Ability to convert an existing LV into a cached LV
Users now have the ability to convert their existing logical volumes
into cached logical volumes.  A cache pool LV must be specified using
the '--cachepool' argument.  The cachepool is the small, fast LV used
to cache the large, slow LV that is being converted.
2014-02-12 09:55:35 -06:00
Jonathan Brassow
48aef76ec5 cache: lv_cache_create returns LV ptr, so return NULL not 0 on error 2014-02-11 13:47:26 -06:00
Jonathan Brassow
013cf27bff cache pool: Add 'update_cache_pool_params'
Similar function to 'update_thin_pool_params', but for cache.  Performs
the adjustements for chunk_size, metdata device size, etc.
2014-02-04 11:50:27 -06:00
Jonathan Brassow
b94a3ee9f6 cache: Add functions that create/remove cache LVs
A cache LV - from LVM's perpective - is a user accessible device that
links the cachepool LV and the origin LV.  The following functions
were added to facilitate the creation and removal of this top-level
LV:
1) 'lv_cache_create' - takes a cachepool and an origin device and links
   them into a new top-level LV of 'cache' segment type.  No allocation
   is necessary in this function, as the sub-LVs contain all of the
   necessary allocated space.  Only the top-level layer needs to be
   created.

2) 'lv_cache_remove' - this function removes the top-level LV of a
   cache LV - promoting the cachepool and origin sub-LVs to top-level
   devices and leaving them exposed to the user.  That is, the
   cachepool is unlinked and free to be used with another origin to
   form a new cache LV; and the origin is no longer cached.
   (Currently, if the cache needs to be flushed, it is done in this
   function and the function waits for it to complete before proceeding.
   This will be taken out in a future patch in favor of polling.)
2014-02-04 07:59:58 -06:00