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Commit Graph

18 Commits

Author SHA1 Message Date
Zdenek Kabelac
adf9bf80a3 cache: support no_discard_passdown
Recent kernel version from kernel commit:
de7180ff908b2bc0342e832dbdaa9a5f1ecaa33a
started to report in cache status line new flag:
no_discard_passdown

Whenever lvm spots unknown status it reports:
Unknown feature in status:

So add reconginzing this feature flag and also report this with

'lvs -o+kernel_discards'

When no_discard_passdown is found in status 'nopassdown' gets reported
for this field  (roughly matching what we report for thin-pools).
2019-06-05 15:54:58 +02:00
Zdenek Kabelac
4d4d5bf323 libdm: accept mirror status with userspace word in the line
Just making sure the parser will not stop - although greater level of
support needs to be added (Describing doc seems to be missing however).
2018-02-01 21:56:07 +01:00
Zdenek Kabelac
2208ebfe16 thin: always clear memory before parsing status
Ensure there cannot be 'reused' any data from some previous call.
2017-12-07 20:59:28 +01:00
Zdenek Kabelac
529dcaf6a3 libdm: workarounds reported raid status info
Current existing kernels reports status sometimes in weird form.

Instead of showing what is the exact progress, we need to estimate
this in-sync state from several surrounding states.

Main reason here is to never report 100% sync state for a raid device
which will be undergoing i.e. recovery.
2017-06-16 17:04:00 +02:00
Zdenek Kabelac
a11b875074 cleanup: use FMTu
Replace some PRIu with FMTu for formating strings.
2017-03-10 19:33:01 +01:00
Zdenek Kabelac
ddd5a76801 libdm: support cache metadata2 feature flag
Dm cache target version 1.10 introduces new cache metadata format
(upstream kernel >=4.11).

New format is enable by passing new target feature flag metadata2.
Interace side on libdm uses DM_CACHE_FEATURE_METADATA2.
This feature bit is now also recognized on status
and set in 'feature_flags' field of dm_status_cache structure.

Code also adds check for 'highest' supported feature flag bit.
So it rejects properly any 'unknown' feature bit set by application.
2017-03-10 19:33:01 +01:00
Zdenek Kabelac
edf5e43f9a libdm: passthrough checks traling space char
When checking for passthrough length, check also for extra ' ' char
just like with other feature strings.
2017-03-10 19:33:01 +01:00
Heinz Mauelshagen
e2354ea344 lvconvert: add infrastructure for RaidLV reshaping support
In order to support striped raid5/6/10 LV reshaping (change
of LV type, stripesize or number of legs), this patch
introduces infrastructure prerequisites to be used
by raid_manip.c extensions in followup patches.

This base is needed for allocation of out-of-place
reshape space required by the MD raid personalities to
avoid writing over data in-place when reading off the
current RAID layout or number of legs and writing out
the new layout or to a different number of legs
(i.e. restripe)

Changes:
- add members reshape_len to 'struct lv_segment' to store
  out-of-place reshape length per component rimage
- add member data_copies to struct lv_segment
  to support more than 2 raid10 data copies
- make alloc_lv_segment() aware of both reshape_len and data_copies
- adjust all alloc_lv_segment() callers to the new API
- add functions to retrieve the current data offset (needed for
  out-of-place reshaping space allocation) and the devices count
  from the kernel
- make libdm deptree code aware of reshape_len
- add LV flags for disk add/remove reshaping
- support import/export of the new 'struct lv_segment' members
- enhance lv_extend/_lv_reduce to cope with reshape_len
- add seg_is_*/segtype_is_* macros related to reshaping
- add target version check for reshaping
- grow rebuilds/writemostly bitmaps to 246 bit to support kernel maximal
- enhance libdm deptree code to support data_offset (out-of-place reshaping)
  and delta_disk (legs add/remove reshaping) target arguments

Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
2017-02-24 05:20:58 +01:00
Zdenek Kabelac
e8ba5c9bd4 libdm: cache status reports passthrough cache mode
Report passthrough mode instead of 'Unknown feature'.
2016-05-19 18:26:07 +02:00
Alasdair G Kergon
1056894f1f raid: Tidy dm_get_status_raid. [HM] 2016-03-22 21:39:52 +00:00
Alasdair G Kergon
cf39346697 libdm: Move _skip_fields within file. 2016-03-22 19:35:14 +00:00
Alasdair G Kergon
65d2d66d02 libdm: Change _advance_to_next_word to _skip_fields 2016-03-22 19:26:13 +00:00
Zdenek Kabelac
29d1533a49 libdm: parse more info from cache status
Parse Fail/Error/need_check/ro status info from cache.
2016-03-10 18:38:53 +01:00
Zdenek Kabelac
0fb3669d49 libdm: thin status update
Fix parsing of 'Fail' status (using capital letter) for thin-pool.
Add also parsing of 'Error' state for thin-pool.
Add needs_check test for thin-pool.

Detect Fail state for thin.
2016-02-18 16:45:42 +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
fa87979004 libdm: introduce dm_get_status_mirror
Add missing function to parse mirror status.
2015-12-01 13:00:43 +01:00
Zdenek Kabelac
362558cd66 cleanup: typo in comment 2015-10-13 15:22:58 +02:00
Alasdair G Kergon
0173c260d8 libdm: Move status fns from deptree to targets.
libdm-deptree is only for functions working with dm tree nodes.
2015-09-28 20:28:31 +01:00