- 18 Jul, 2016 17 commits
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Heinz Mauelshagen authored
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Heinz Mauelshagen <heinzm@redhat.com> Signed-off-by:
Mike Snitzer <snitzer@redhat.com>
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Heinz Mauelshagen authored
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Heinz Mauelshagen authored
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Heinz Mauelshagen authored
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Heinz Mauelshagen authored
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Heinz Mauelshagen authored
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Heinz Mauelshagen authored
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Heinz Mauelshagen authored
Add function rs_setup_recovery() to allow for defined setup of RAID set recovery in the constructor. Will be called with dev_sectors={0, rdev->sectors, MaxSectors} to recover a new or enforced sync, grown or not to be synhronized RAID set respectively. Prevents recovery on raid0, which doesn't support it. Enforces recovery on raid6 to ensure properly defined Syndromes mandatory for that MD personality are being created. Signed-off-by: -
Heinz Mauelshagen authored
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Heinz Mauelshagen authored
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Heinz Mauelshagen authored
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Heinz Mauelshagen authored
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Heinz Mauelshagen authored
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Heinz Mauelshagen authored
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Heinz Mauelshagen authored
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Heinz Mauelshagen authored
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Heinz Mauelshagen authored
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- 06 Jul, 2016 1 commit
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Mike Snitzer authored
Check return value of kthread_run() in dm_old_init_request_queue(). Reported-by:
Minfei Huang <mnghuan@gmail.com> Signed-off-by:
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- 02 Jul, 2016 1 commit
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Sami Tolvanen authored
do_div was replaced with div64_u64 at some point, causing a bug with block calculation due to incompatible semantics of the two functions. Signed-off-by:
Sami Tolvanen <samitolvanen@google.com> Fixes: a739ff3f ("dm verity: add support for forward error correction") Cc: stable@vger.kernel.org # v4.5+ Signed-off-by:
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- 01 Jul, 2016 2 commits
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Bart Van Assche authored
Merge the two DM_PARAMS_[KV]MALLOC flags into a single flag. Doing so avoids the crashes seen with previous attempts to consolidate buffer management to use kvfree() without first flagging that memory had actually been allocated. Signed-off-by:
Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by:
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Bart Van Assche authored
Avoid that sparse complains about assigning a __le64 value to a u64 variable. Remove the (u64) casts since these are superfluous. This patch does not change the behavior of the source code. Signed-off-by:
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- 16 Jun, 2016 1 commit
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Arnd Bergmann authored
A newly introduced function has 'const int' as the return type, but as "make W=1" reports, that has no meaning: drivers/md/dm-raid.c:510:18: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers] This changes the return type to plain 'int'. Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Fixes: 33e53f06 ("dm raid: introduce extended superblock and new raid types to support takeover/reshaping") Signed-off-by:
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- 14 Jun, 2016 18 commits
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Heinz Mauelshagen authored
Superblock updates where bogus causing some takovers/reshapes to fail. Introduce new runtime flag (RT_FLAG_KEEP_RS_FROZEN) to keep a raid set frozen when a layout change was requested. Userpace will immediately reload the table w/o the flags requesting such change once they made it to the superblocks and any change of recovery/reshape offsets has to be avoided until after read. Signed-off-by:
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Heinz Mauelshagen authored
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Heinz Mauelshagen authored
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Heinz Mauelshagen authored
Add bool functions rs_is_recovering and rs_is_reshaping() to test for ongoing recovery/reshaping respectively in order to reject respective requests on ongoing ones. Remove ctr array size check, because ti->len and array sectors will differ during disk addition/removal reshape. Use __is_raid10_near() rather than type string compare. Introduce rs_check_reshape() and rs_start_reshape(), use the former in the ctr to reject bogus rehsape requests and the latter in preresume to actually start a reshape. Signed-off-by:
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Heinz Mauelshagen authored
Add rs_is_reshapable(), rs_data_stripes(), rs_reshape_requested(), rs_set_dev_and_array_sectors() and rs_adjust_data_offsets() Remove superfluous check for reshape message Correct runtime bit definitions to be incremental Signed-off-by:
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Heinz Mauelshagen authored
It is more intuitive to manage each raid level's features in terms of what is supported rather than what isn't supported. Signed-off-by:
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Mike Snitzer authored
Renamed functions and variables with leading single underscore to have a double underscore. Renamed some functions to have better names. Folded functions that were split out without reason. Signed-off-by: -
Mike Snitzer authored
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Mike Snitzer authored
Removes obfuscation that is of little value. Signed-off-by: -
Mike Snitzer authored
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Mike Snitzer authored
Also update module description to "raid0/1/10/4/5/6 target" Reported by Alasdair G Kergon <agk@redhat.com> Signed-off-by: -
Mike Snitzer authored
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Mike Snitzer authored
No idea what Heinz was doing with the versioning but upstream commit 4c9971ca ("dm raid: make sure no feature flags are set in metadata") bumped to 1.8.0 already. Signed-off-by:
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Mike Snitzer authored
There ti_error_* wrappers added very little. No other DM target has ever gone to such lengths to wrap setting ti->error. Also fixes some NULL derefences via rs->ti->error. Signed-off-by: -
Mike Snitzer authored
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Heinz Mauelshagen authored
The target's status interface has to provide the new 'data_offset' value to allow userspace to retrieve the kernels offset to the data on each raid device of a raid set. This is the base for out-of-place reshaping required to not write over any data during reshaping (e.g. change raid6_zr -> raid6_nc): - add rs_set_cur() to be able to start up existing array in case of no takeover; use in ctr on takeover check - enhance raid_status() - add supporting functions to get resync/reshape progress and raid device status chars - fixup rebuild table line output race, which does miss to emit 'rebuild N' on fully synced/rebuild devices, because it is relying on the transient 'In_sync' raid device flag - add new status line output for 'data_offset', which'll later be used for out-of-place reshaping - fixup takeover not working for all levels - fixup raid0 message interface oops caused by missing checks for the md threads, which don't exist in case of raid0 - remove ALL_FREEZE_FLAGS not needed for takeover - adjust comments Signed-off-by:
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Heinz Mauelshagen authored
Add raid level takeover support allowing arbitrary takeovers between raid levels supported by md personalities (i.e. raid0, raid1/10 and raid4/5/6): - add rs_config_{backup|restore} function to allow for temporary storing ctr requested layout changes and restore them for takeover conersion decision after the superblocks got loaded and analyzed - add members to store layout to 'struct raid_set' (not mandatory for takeover but needed for reshape in later patch) - add rebuild_disks bitfield to 'struct raid_set' and set bits in ctr to use in setting up takeover (base to address a 'rebuild' related raid_status() table line bug and needed as well for reshape in future patch) - add runtime flags and respective manipulation functions to be able to control e.g. wrting of superlocks to the preresume function on takeover and (later) reshape - add functions to detect takeover, check it's valid (mandatory here to avoid failing on md_run()), setup for it and use in the ctr; those will be likely moved out once reshaping gets added to simplify the ctr - start raid set readonly in ctr and switch to readwrite, optionally updating superblocks, in preresume in order to allow suspend to quiesce any active table before (which involves superblock updates); this ensures the proper sequence of writing the current and any new takeover(/reshape) metadata Signed-off-by: -
Heinz Mauelshagen authored
Add transferring the new takeover/reshape related superblock members introduced to the super_sync() function: - add/move supporting functions - add failed devices bitfield transfer functions to retrieve the bitfield from superblock format or update it in the superblock - add code to transfer all new members Signed-off-by:
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