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Author SHA1 Message Date
Adam Rutkowski
10c3c3de36 Renaming hash bucket locking functions 
1. new abbreviated previx: ocf_hb (HB stands for hash bucket)
2. clear distinction between functions requiring caller to
   hold metadata shared global lock ("naked") vs the ones
   which acquire global lock on its own ("prot" for protected)
3. clear distinction between hash bucket locking functions
   accepting hash bucket id ("id"), core line and lba ("cline")
   and entire request ("req").

Resulting naming scheme:
ocf_hb_(id/cline/req)_(prot/naked)_(lock/unlock/trylock)_(rd/wr)

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-02-12 18:08:15 -06:00
Adam Rutkowski
c822c953ed Fix return status from hash bucket trylock wr 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-02-11 15:02:06 -06:00
Robert Baldyga
af8177d2ba
Merge pull request #458 from mmichal10/fix-cleaning 
Fix updating hot cachelines cleaning list
 2021-02-11 11:30:07 +01:00
Robert Baldyga
d03ea719cd
Merge pull request #451 from arutk/exact_evict_count 
only request evict size equal to request unmapped count
 2021-02-11 10:47:12 +01:00
Michal Mielewczyk
fa41d4fc88 Fix updating hot cachelines cleaning list 
Update cacheline's timestamp each time it's being written.

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-02-10 10:02:57 -05:00
Adam Rutkowski
4276d65e5a unit tests for new eviction order 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-02-09 12:51:39 -06:00
Adam Rutkowski
746b32c47d Evict from overflown partitions first 
Overflown partitions now have precedence over others during
eviction, regardless of IO class priorities.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-02-09 12:51:39 -06:00
Adam Rutkowski
5538a5a95d Only request evict size equal to request unmapped count 
Removing the logic for oportunistic partition overflow
reduction by evicting more cachelines than actually
required by the request being serviced.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-02-09 11:11:15 -06:00
Robert Baldyga
fd26735157
Merge pull request #450 from mmichal10/ioclass-stats-fix 
Reset per-partition counters when adding core
 2021-02-03 13:13:30 +01:00
Michal Mielewczyk
93eccc862a Reset per-partition counters when adding core 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-02-03 06:18:44 -05:00
Robert Baldyga
3543f5c5cc
Merge pull request #443 from rafalste/update_copyright 
Update copyright statements (2021)
 2021-02-03 11:59:39 +01:00
Robert Baldyga
3ddefc9b59
Merge pull request #446 from mmichal10/lock-on-hit 
Don't evict on hit
 2021-02-02 15:18:22 +01:00
Michal Mielewczyk
3a7b55c4c2 Don't evict on hit 
If request is hit, simply try to acquire cachelines instead of verifying
whether target partition's size is not exceeded.

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-01-29 17:15:32 -05:00
Rafal Stefanowski
6ed4cf8a24 Update copyright statements (2021) 
Signed-off-by: Rafal Stefanowski <rafal.stefanowski@intel.com>
 2021-01-21 13:17:34 +01:00
Robert Baldyga
7f72a9431c
Merge pull request #442 from arutk/cleaner_page_lock 
Add missing collision page lock in cleaner
 2021-01-21 09:25:21 +01:00
Adam Rutkowski
012438c279 Add missing collision page lock in cleaner 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-01-20 19:28:41 -06:00
Robert Baldyga
fe56d719d7
Merge pull request #440 from robertbaldyga/flush-collision-on-core-remove 
Flush metadata collision segment on core remove
 2021-01-19 15:11:11 +01:00
Robert Baldyga
5a88ab2d61 Flush metadata collision segment on core remove 
If there is any dirty data on the cache associated with removed core,
we must flush collision metadata after removing core to make metadata
persistent in case of dirty shutdown.

This fixes the problem when recovery procedure erroneously interprets
cache lines that belonged to removed core as valid ones.

This also fixes the problem, when after removing core containing dirty
data another core is added, and then recovery procedure following dirty
shutdown assigns cache lines from removed core to the new one, effectively
leading to data corruption.

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-01-19 13:34:28 +01:00
Robert Baldyga
3f7139a814
Merge pull request #439 from mmichal10/remove_core_fine_lock 
Remove core fine lock
 2021-01-15 21:10:14 +01:00
Adam Rutkowski
f206c64ff6 Fine granularity lock in cache_mngt_core_deinit_attached_meta 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-01-15 03:11:46 -05:00
Michal Mielewczyk
6d962b38e9 API for cacheline write trylock 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-01-15 02:10:42 -05:00
Adam Rutkowski
bd20d6119b External linkage for function to sparse single cline 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-01-15 02:10:42 -05:00
Adam Rutkowski
93bda499c7 Add functions to lock specific hash bucket 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-01-12 15:42:21 -05:00
Robert Baldyga
fd88c2c3a4
Merge pull request #436 from mmichal10/metadata-assert 
Metadata assert
 2021-01-08 10:15:08 +01:00
Robert Baldyga
eff0047d6f
Merge pull request #434 from robertbaldyga/dont-modify-list-read-lock 
seq-cutoff: Don't modify node list under read lock
 2021-01-08 10:02:26 +01:00
Michal Mielewczyk
fcef130919 Bug on metadata access error 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-01-07 18:10:44 -05:00
Michal Mielewczyk
d0225ef1cb Prevent uint32_t overflow 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-01-07 02:45:05 -05:00
Robert Baldyga
ea1fc7a6d4 seq-cutoff: Don't modify node list under read lock 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-01-05 19:46:37 +01:00
Robert Baldyga
dd508c595f
Merge pull request #430 from rafalste/fix_attach_load_paths 
Create separate pipelines and paths for cache attach/load scenarios
 2020-12-23 16:51:37 +01:00
Robert Baldyga
69e388a10f
Merge pull request #372 from arutk/wo_test_enhancements 
Extend WO engine functional tests
 2020-12-23 16:51:16 +01:00
Rafal Stefanowski
57d4aaf7c9 Return error status from ocf_freelist_init 
Signed-off-by: Rafal Stefanowski <rafal.stefanowski@intel.com>
 2020-12-23 16:43:46 +01:00
Rafal Stefanowski
d3b61e474c Remove init_mode and use metadata.is_volatile instead 
Signed-off-by: Rafal Stefanowski <rafal.stefanowski@intel.com>
 2020-12-23 16:31:55 +01:00
Rafal Stefanowski
88b97df16d Fix pipeline attach/load paths 
Create separate pipelines for cache attach and load scenarios.

Signed-off-by: Rafal Stefanowski <rafal.stefanowski@intel.com>
 2020-12-23 16:31:49 +01:00
Robert Baldyga
efc8786ed3
Merge pull request #432 from robertbaldyga/seq-cutoff-detached-core 
Initialize sequential cutoff for detached cores
 2020-12-23 14:24:24 +01:00
Robert Baldyga
6270d917f8 Initialize sequential cutoff for detached cores 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2020-12-23 14:00:54 +01:00
Rafal Stefanowski
4c42d62f97 Add a newline escape in 'invalid checksum' messages 
Signed-off-by: Rafal Stefanowski <rafal.stefanowski@intel.com>
 2020-12-22 16:34:44 +01:00
Robert Baldyga
08af1192d4
Merge pull request #431 from arutk/fix_part_init 
Add missing part->id initialization
 2020-12-22 15:32:10 +01:00
Adam Rutkowski
1b8bfb36f5 Add missing part->id initialization 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2020-12-22 11:52:20 +01:00
Robert Baldyga
7f60d73511
Merge pull request #413 from mmichal10/occ-per-ioclass 
Occupancy per ioclass
 2020-12-21 23:43:54 +01:00
Robert Baldyga
0964e0e9df
Merge pull request #422 from arutk/light_meta 
reduce metadata interface overhead
 2020-12-21 14:34:37 +01:00
Michal Mielewczyk
2206b2fdef pyocf: cache attach test 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2020-12-21 08:23:34 -05:00
Michal Mielewczyk
5c2a5c5e79 pyocf: add cache detach api 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2020-12-21 08:23:34 -05:00
Michal Mielewczyk
93318696cd pyocf: ioclass api 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2020-12-21 08:23:34 -05:00
Michal Mielewczyk
0dc8b5811c Store min and max ioclass size as percentage val 
Min and max values, keept as an explicit number of cachelines, are tightly
coupled with particular cache. This might lead to errors and mismatches after
reattaching cache of different size.

To prevent those errors, min and max should be calculated dynamically.

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2020-12-21 08:23:34 -05:00
Michal Mielewczyk
bcfc821068 Don't calc free cachelines in per-ioclass stats 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2020-12-21 08:23:34 -05:00
Michal Mielewczyk
76148de310 Unit tests for mapping 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2020-12-21 08:23:34 -05:00
Michal Mielewczyk
60680b15b2 Accessors for req->info.mapping_error 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2020-12-21 08:23:34 -05:00
Michal Mielewczyk
9e11a88f2e Occupancy per ioclass 
Respect occpuancy limit set single ioclass

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2020-12-21 08:23:34 -05:00
Michal Mielewczyk
418303eee8 UT for occupancy per ioclass utils 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2020-12-21 08:23:34 -05:00
Michal Mielewczyk
05f3c22dad Occupancy per ioclass utilities 
Functions to check space availability and to manage cachelines reservation

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2020-12-21 08:18:47 -05:00