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06f2140090
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220 Commits

Author SHA1 Message Date
Krzysztof Majzerowicz-Jaszcz
06f2140090 Removing ocf_metadata_sb_crc_recovery 
Removing ocf_metadata_sb_crc_recovery - not used

Signed-off-by: Krzysztof Majzerowicz-Jaszcz <krzysztof.majzerowicz-jaszcz@intel.com>
 2022-03-04 19:10:47 +01:00
Robert Baldyga
805ea14529 Remove runtime recovery in standby mode 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2022-02-01 03:11:50 +01:00
Robert Baldyga
e30fd48338
Merge pull request #656 from jfckm/extend-metadata-probe 
Include cache mode and cache line size in metadata probe
 2022-02-04 13:01:10 +01:00
Jan Musial
8522b0b6e6 Include cache mode and cache line size in metadata probe 
Signed-off-by: Jan Musial <jan.musial@intel.com>
 2022-02-04 08:15:05 +01:00
Michal Mielewczyk
5d74aec921 Add missing return in raw_ram_zero() in error path 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2022-01-12 07:46:49 +01:00
Adam Rutkowski
294e02bc1b Fail cache recovery in case of erroneous mapping 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2022-01-10 11:10:02 +01:00
Adam Rutkowski
9693b82cf9 Only flush superblock at the end of cache attach 
The purpose of this change is not to write superblock to the cache
drive untill all other sections are initilized on disk in attach()
path. Combined with superblock clearing at the erarlier stage of
attach(), this assures there are no residual mappings in the collision
section in case of power failure during attach with pre-existing
metadata.

This is implemented by removing ocf_metadata_flush_all_set_status() step
at the beginning of ocf_metadata_flush_all().
ocf_metadata_flush_all() is called, except for the attach() case described
above, in two cases:
1. at the end of cache load - potentially after cache recovery
2. during detaching cache drive in cache stop.

To make sure there are no regressions in the first case, an explicit
_ocf_mngt_attach_shutdown_status() is added to load pipeline before
ocf_metadata_flush_all(). The second case is always ran after cache
drive is attached, so dirty status bit must have already be written to
the disk.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2022-01-05 13:06:59 +01:00
Adam Rutkowski
196437f9bc Zero superblock before writing metadata 
This is the first step towards atomic initialization of metadata
on cache disk.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2022-01-05 13:06:59 +01:00
Robert Baldyga
c6644116ae
Merge pull request #614 from robertbaldyga/redesign-standby 
Redesign failover standby API
 2022-01-04 14:07:05 +01:00
Jan Musial
ae18ce274e Fix cache size requirements and some logging 
Signed-off-by: Jan Musial <jan.musial@intel.com>
 2022-01-03 14:30:07 +01:00
Robert Baldyga
b25cd91b86 Remove unused ocf_metadata_load_unsafe() 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-12-29 20:31:43 +01:00
Robert Baldyga
4cabc60d40 Avoid loading runtime metadata sections during recovery 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-12-29 14:04:19 +01:00
Robert Baldyga
4625763df5 Return error on CRC mismatch during recovery 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-12-29 14:04:19 +01:00
Robert Baldyga
0751b2c0c0 Fix metadata flapping 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-12-15 22:21:57 +01:00
Robert Baldyga
df9a9f2722 Read superblock sections from cache volume during activate 
Because of metadata flapping it is much more complicated to capture those
sections in flight in standby mode, so we read them directly from the cache
volume during the activate.

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-12-15 15:30:34 +01:00
Robert Baldyga
99c8c05f3f Introduce flapping of metadata config sections 
This feature provides double buffering of config sections to prevent
situation when power failure during metadata flush leads to partially
updated metadata. Flapping mechanism makes it always possible to perform
graceful rollback to previous config metadata content in such situation.

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-12-15 15:30:34 +01:00
Michal Mielewczyk
655f732748 Don't access freed memory 
Instead of accessing memory of a freed IO, redo size calculations

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-12-08 14:16:49 +01:00
Adam Rutkowski
b455a393dd extra assertion in metadata passive update 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-11-30 12:04:57 +01:00
Adam Rutkowski
d0b00817f3 fix cacheline reset in passive metadata update 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-11-30 19:34:52 +01:00
Michal Mielewczyk
4ab22ee2dc Maintain runtime struct during failover standby 
To allow the fastest switching from the passive-standby to active mode, the
runtime metadata must be kept 100% synced with the metadata on the drive and in
the RAM thus recovery is required after each collision section update.

To avoid long-lasting recovering of all the cachelines each time the collision
section is being updated, the passive update procedure recovers only those
which have its MD entries on the updated pages.

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-11-19 11:58:09 +01:00
Michal Mielewczyk
048bbedd71 Fix metadata_clear_valid_if_clean() 
The function should return the cacheline's valid status

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-11-19 11:53:48 +01:00
Michal Mielewczyk
bb0ff67fe9 Metadata clear_dirty_if_invalid() utility 
Fix cacheline's metadata if it is dirty and invalid

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-11-19 11:53:48 +01:00
Robert Baldyga
5cbbfdd5ca
Merge pull request #587 from Open-CAS/gcc_11_fix 
Fix for OCL issue #968 -  GCC 11 compilation error
 2021-11-08 13:34:52 +01:00
Krzysztof Majzerowicz-Jaszcz
99c54be592 Fix for OCL issue #968 - GCC 11 compilation error 
GCC 11 static check finds an array size mismatch and prevents OCF from
compiling correctly. This fixes OpenCAS Linux issue #968

Signed-off-by: Krzysztof Majzerowicz-Jaszcz <krzysztof.majzerowicz-jaszcz@intel.com>
 2021-11-08 11:39:17 +01:00
Adam Rutkowski
8f080295bb
Merge pull request #585 from rafalste/license_change 
Aplying BSD 3-Clause license to OCF source
 2021-10-29 13:16:00 +02:00
Rafal Stefanowski
f22da1cde7 Fix license 
Change license to BSD-3-Clause

Signed-off-by: Rafal Stefanowski <rafal.stefanowski@intel.com>
 2021-10-28 13:08:50 +02:00
Rafal Stefanowski
3cc0d07197 License change to be approved by contributors 
Signed-off-by: Rafal Stefanowski <rafal.stefanowski@intel.com>
 2021-10-27 12:48:20 +02:00
Adam Rutkowski
f9fb80b887 Fix conditional valid bit reset 
Status bits outside provided mask shall be unchanged.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-10-12 22:56:45 +02:00
Robert Baldyga
076b5995ed Fix metadata_clear_valid_if_clean() 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-09-10 08:12:11 +02:00
Robert Baldyga
7587bec07c
Merge pull request #567 from robertbaldyga/optimize-out-recovery-sector-loop 
Optimize out looping over cache line sectors in recovery
 2021-09-08 13:57:32 +02:00
Michal Mielewczyk
612f68b3c1 Fix metadata io detection in passive mode 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-09-08 13:33:04 +02:00
Robert Baldyga
1a3843ba12 Little coding style fix 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-09-07 22:54:10 +02:00
Robert Baldyga
65d3e7a41a Introduce ocf_metadata_clear_valid_if_clean() 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-09-07 22:54:10 +02:00
Robert Baldyga
d7c1404f82 Simplify metadata bit function declarations 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-09-07 22:54:10 +02:00
Robert Baldyga
12a82d7fb1 Get rid of struct ocf_cache_line_settings 
Remove struct that contains redundant data.

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-09-07 14:53:46 +02:00
Robert Baldyga
d5bd3fbd78 Free zeroed metadata pages on update in raw_dynamic 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-09-06 13:49:21 +02:00
Robert Baldyga
9b3a0c968e Introduce ocf_metadata_passive_update() 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-09-06 13:49:21 +02:00
Robert Baldyga
85e8b414c4 Add ocf_metadata_load_unsafe() 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-09-03 17:22:22 +02:00
Robert Baldyga
c6c6618ad8 Move recovery code from metadata to cache mngt 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-09-03 17:22:22 +02:00
Robert Baldyga
a2db4d14e8 Move core initialization code from metadata to mngt 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-09-03 17:22:22 +02:00
Robert Baldyga
9ab4c51dfa Expose superblock operations as part of internal metadata API 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-09-03 17:22:22 +02:00
Robert Baldyga
82abcd11e7 Fix documentation of ocf_metadata_raw_rd_access() 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-09-02 22:38:37 +02:00
Robert Baldyga
387cf1b9a5 Fix debug tracing in metadata 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-09-02 22:38:37 +02:00
Michal Mielewczyk
26194fc536 Use cleaning ops wrapper functions 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-07-27 15:44:18 +02:00
Michal Mielewczyk
6dc29ee85e Refactor includes 
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2021-07-27 15:44:18 +02:00
Robert Baldyga
f538bbd3ae Fix argument order in ocf_metadata_set_partition_id() call 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-07-09 21:31:06 +02:00
Robert Baldyga
847f5f1174
Merge pull request #520 from arutk/lru_refactor 
LRU refactoring
 2021-06-21 22:49:08 +02:00
Adam Rutkowski
1e1955b833 lru refactor 
rearanging lru implementation for easier journaling

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-06-21 22:32:57 +02:00
Adam Rutkowski
edf20c133e Move metadata I/O lock to IO queue context 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-06-21 21:39:35 +02:00
Adam Rutkowski
a70608476d fastpath for metadata update 
Removing extra request cycle through IO queue in case of successfull
metadata I/O lock.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-06-21 20:02:56 +02:00