IF YOU WOULD LIKE TO GET AN ACCOUNT, please write an
email to Administrator. User accounts are meant only to access repo
and report issues and/or generate pull requests.
This is a purpose-specific Git hosting for
BaseALT
projects. Thank you for your understanding!
Только зарегистрированные пользователи имеют доступ к сервису!
Для получения аккаунта, обратитесь к администратору.
As now we can properly recognize all paramerters for pool creation,
we may drop PASS_ARG_ defines and rely on '_UNSELECTED' or 0 entries
as being those without user given args.
When setting are not given on command line - 'update' function
fill them from profiles or configuration. For this 'profile' arg
was needed to be passed around and since 'VG' itself is not needed,
it's been all replaced with 'cmd, profile, extents_size' args.
Since cache chunk might be huge and there is no technical need
to enforce rounding and there is actually more 'real' VG space
used then necessary - keep rounding on 'chunk' bounrary only
for thin volumes - where it's the space used anyway.
NB: we support conversion of any-size 'existing' LV into cached LV.
Fix missing reset of '*settings' pointer when no args were given.
Handle cache_chunk settings like all other settings, so it is properly
updated only with non-zero settings and the existing cache-pool
chunk_size is not being reconfigured.
User can specify metadata profile which stores important cache
geometry data for easy configuration.
Fix missing support for getting chunk_size, cache_mode, cache_policy
for a cache/cache pools volumes from configuration or metadata profile.
To more easily recognize unselected state from select '0' state
add new 'THIN_ZERO_UNSELECTED' enum.
Same applies to THIN_DISCARDS_UNSELECTED.
For those we no longer need to use PASS_ARG_ZERO or PASS_ARG_DISCARDS.
Basically code moving operation to have a single place resolving
thin_pool_chunk_size_policy.
Supported are generic & performance profiles.
Function is now shared between thin manipulation code and configuration
_CFG logic to obtain defaults and handle correct reporting upward coding
stack.
In addition to the already supported conversion between 2-legged
raid1 and raid5, raid1 and raid4 can be also converted into each
other with 2 legs (raid4/5 are limited to map a 2-legged raid1).
This patch supports the missing raid4 conversion in the sequence
linear -> 2-legged raid1 -> raid4/5, then restripe to more than one
data stripes for performance and resilience reasons and optionally
convert to striped/raid0.
The other conversion sequence is also possible by converting N-way
striped/raid0 to raid4/5, then restripe to 2 legs followed by a
conversion to raid1 and optionally to linear (loosing all resilience).
On conversion from striped to raid0, data LVs are created
and all segments and their respective areas of the striped
LV are moved across to new segments allocated for the raid0
image LVs. This can cause non-canonical segments to be added
to the image LVs.
Add a call to lv_merge_segments() once all segments have been
added to an image LV to compensate for that. This avoids
unsafe table loads on activation.
Fix comments.
Splitting off an image LV of a 2-legged
raid1 LV causes loss of resilience.
Ask user to avoid uninformed loss of all resilience.
Don't ask for N > 2 legged raid1 LVs.
Adjust tests.
Splitting off an image LV of a 2-legged raid1 LV tracking changes
causes loosing partial resilience for any newly written data set.
Full resilience will be provided again after the split off image LV
got merged back in and the new data set got fully synchronized.
Reason being that the data is only stored on the remaining single
writable image during the split.
Ask user to avoid uninformed loss of such partial resilience.
Don't ask for N > 2 legged raid1 LVs.
In case N images fail (N <= parity chunks) _and_
a "vgreduce --removemissing --force VG" was applied
a following repair of the RaidLV fails:
Unable to remove N images: Only 0 devices given.
Failed to remove the specified images from tb/r.
Failed to replace faulty devices in tb/r.
Fix as of this commit results in correct repair:
Faulty devices in tb/r successfully replaced.
seg->extents_copied has to be defined properly on reducing
the size of a raid LV or conversion from raid5 with 1 stripe
to raid1 will fail.
Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
The lv_extend/_lv_reduce API doesn't cope with resizing RaidLVs
with allocated reshape space and ongoing conversions. Prohibit
resizing during conversions and remove the reshape space before
processing resize. Add missing seg->data_copies initialisation.
Fix typo/comment.
For the time being raid10 is limited to even number of total stripes
as is and 2 data copies. The number of stripes provided on creation
of a raid10(_near) LV with -i/--stripes gets doubled to define
that even total number of stripes (i.e. images).
Apply the same on disk adding conversions (reshapes) with
"lvconvert --stripes RaidLV" (e.g. 2 stripes = 4 images
total converted to 3 stripes = 6 images total).
Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
Enhance the raid report functions for the recently added LV fields
reshape_len, reshape_len_le, data_offset, new_data_offset, data_copies,
data_stripes and parity_chunks to cope with "lvs --select".
Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
An initialization was missing when converting striped to raid0(_meta)
causing unitialized reshape_len in the new component LVs first segment.
Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
The imposed minimum region size can cause rejection on
disk removing reshapes. Lower it to avoid that.
Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
When requesting a regionsize change during conversions, check
for constraints or the command may fail in the kernel n case
the region size is too smalle or too large thus leaving any
new SubLVs behind.
Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
Allow regionsize on upconvert from linear:
fix related commit 2574d3257a to actually work
Related: rhbz1394427
Remove setting raid5_n on conversions from raid1
as of commit 932db3db53 because any raid5 mapping
may be requested.
Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
In order to support striped raid5/6/10 LV reshaping (change
of LV type, stripesize or number of legs), this patch
introduces the changes to call the reshaping infratructure
from lv_raid_convert().
Changes:
- add reshaping calls from lv_raid_convert()
- add command definitons for reshaping to tools/command-lines.in
- fix raid_rimage_extents()
- add 2 new test scripts lvconvert-raid-reshape-linear_to_striped.sh
and lvconvert-raid-reshape-striped_to_linear.sh to test
the linear <-> striped multi-step conversions
- add lvconvert-raid-reshape.sh reshaping tests
- enhance lvconvert-raid-takeover.sh with new raid10 tests
Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
In order to support striped raid5/6/10 LV reshaping (change
of LV type, stripesize or number of legs), this patch
introduces more local infrastructure to raid_manip.c
used by followup patches.
Change:
- allow raid_rimage_extents() to calculate raid10
- remove an __unused__ attribute
Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
In order to support striped raid5/6/10 LV reshaping (change
of LV type, stripesize or number of legs), this patch
introduces more local infrastructure to raid_manip.c
used by followup patches.
Change:
- add missing raid1 <-> raid5 conversions to support
linear <-> raid5 <-> raid0(_meta)/striped conversions
- rename related new takeover functions to
_takeover_from_raid1_to_raid5 and _takeover_from_raid5_to_raid1,
because a reshape to > 2 legs is only possible with
raid5 layout
Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
In order to support striped raid5/6/10 LV reshaping (change
of LV type, stripesize or number of legs), this patch
introduces more local infrastructure to raid_manip.c
used by followup patches.
Change:
- enhance _clear_meta_lvs() to support raid0 allowing
raid0_meta -> raid10 conversions to succeed by clearing
the raid0 rmeta images or the kernel will fail because
of discovering reordered raid devices
Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
In order to support striped raid5/6/10 LV reshaping (change
of LV type, stripesize or number of legs), this patch
introduces more local infrastructure to raid_manip.c
used by followup patches.
Changes:
- enhance _raid45610_to_raid0_or_striped_wrapper() to support
raid5_n with 2 areas to raid1 conversion to allow for
striped/raid0(_meta)/raid4/5/6 -> raid1/linear conversions;
rename it to _takeover_downconvert_wrapper to discontinue the
illegible function name
- enhance _striped_or_raid0_to_raid45610_wrapper() to support
raid1 with 2 areas to raid5* conversions to allow for
linear/raid1 -> striped/raid0(_meta)/raid4/5/6 conversions;
rename it to _takeover_upconvert_wrapper for the same reason
Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
In order to support striped raid5/6/10 LV reshaping (change
of LV type, stripesize or number of legs), this patch
introduces more local infrastructure to raid_manip.c
used by followup patches.
Changes:
- add missing possible reshape conversions and conversion options
to allow/prohibit changing stripesize or number fo stripes
- enhance setting convenient riad types in reshape conversions
(e.g. raid1 with 2 legs -> radi5_n)
Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
In order to support striped raid5/6/10 LV reshaping (change
of LV type, stripesize or number of legs), this patch
introduces more local infrastructure to raid_manip.c
used by followup patches.
Changes:
- add _raid_reshape() using the pre/post callbacks and
the stripes add/remove reshape functions introduced before
- and _reshape_requested function checking if a reshape
was requested
Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
In order to support striped raid5/6/10 LV reshaping (change
of LV type, stripesize or number of legs), this patch
introduces more local infrastructure to raid_manip.c
used by followup patches.
Changes:
- add vg metadata update functions
- add pre and post activation callback functions for
proper sequencing of sub lv activations during reshaping
- move and enhance _lv_update_reload_fns_reset_eliminate_lvs()
to support pre and post activation callbacks
- add _reset_flags_passed_to_kernel() which resets anyxi
rebuild/reshape flags after they have been passed into the kernel
and sets the SubLV remove after reshape flags on legs to be removed
Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
In order to support striped raid5/6/10 LV reshaping (change
of LV type, stripesize or number of legs), this patch
introduces more local infrastructure to raid_manip.c
used by followup patches.
Changes:
- add function to support disk adding reshapes
- add function to support disk removing reshapes
- add function to support layout (e.g. raid5ls -> raid5_rs)
or stripesize reshaping
Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
In order to support striped raid5/6/10 LV reshaping (change
of LV type, stripesize or number of legs), this patch
introduces more local infrastructure to raid_manip.c
used by followup patches.
Changes:
- add function providing state of a reshaped RaidLV
- add function to adjust the size of a RaidLV was
reshaped to add/remove stripes
Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
In order to support striped raid5/6/10 LV reshaping (change
of LV type, stripesize or number of legs), this patch
introduces more local infrastructure to raid_manip.c
used by followup patches.
Changes:
- add lv_raid_data_copies returning raid type specific number;
needed for raid10 with more than 2 data copies
- remove _shift_and_rename_image_components() constraint
to support more than 10 raid legs
- add function to calculate total rimage length used by out-of-place
reshape space allocation
- add out-of-place reshape space alloc/relocate/free functions
- move _data_rimages_count() used by reshape space alloc/realocate functions
Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
In order to support striped raid5/6/10 LV reshaping (change
of LV type, stripesize or number of legs), this patch
introduces local infrastructure to raid_manip.c
used by followup patches.
Add functions:
- to check reshaping is supported in target attibute
- to return device health string needed to check
the raid device is ready to reshape
Related: rhbz834579
Related: rhbz1191935
Related: rhbz1191978
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
