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Add an independent command definition for "vgchange --locktype",
and split the implementation out of the set of common metadata
changes. It is unlike normal metadata changes, and can only
be run by itself. (Changing the lock type is similar in
principle to changing the VG name or the VG system ID; it
effects the ability of any host to see or access the VG.)
At some point this command lost the ability to forcibly change
the lock type of a shared VG to "none" (making it a local VG).
This can be necessary to repair shared VGs (e.g. recovery steps
that occur in vg_read are disabled for shared VGs because
they are not locked properly, or recovering sanlock locks
when the PV holding them is lost.)
"vgchange --locktype none --lockopt force VG" is used as the
method of forcing the shared VG to become local so that it
can be repaired.
Fill in some gaps where old versions of lvm allowed
--poll and --monitor in combination with other operations,
but those combinations had been lost since the cmd def work.
(The new cmd def code also added some combinations that
had been missed by the old code.)
Changes:
lvchange --activate: add poll and monitor options, and
add calls to them in implementation.
lvchange --refresh: add monitor option (poll already there),
and call to monitor in implementation.
lvchange <metadata ops>: add poll and monitor options, and
add calls to them in implementation.
vgchange <metadata ops>: add poll option (call to poll
already in implementation).
vgchange --refresh: remove monitor option (not used by code)
lvchange --persistent y: add poll and monitor options, and
add calls to them, and to activate
in the implementation. (Making it
match the main lvchange metadata
command.)
Summary of current usage:
lvchange --activate: monitor, poll
vgchange --activate: monitor, poll
lvchange --refresh: monitor, poll
vgchange --refresh: poll
lvchange --monitor: ok
lvchange --poll: ok
lvchange --monitor --poll: ok
vgchange --monitor: ok
vgchange --poll: ok
vgchange --monitor --poll: ok
lvchange <metadata ops>: monitor, poll
vgchange <metadata ops>: poll
These days --partial is only used with activation in
lvchange/vgchange. It probably had another meaning
at some point in history which is no longer used,
so ignore it in those cases.
When included in the OO list, the option is advertised in
help/man output, implying it is meaningful to the command,
when in fact the command never uses it.
The IO list means the option won't cause an error if it's
used, but is not displayed as an valid option for the command.
If the option is not included in either OO or IO lists,
using the option would cause a command error, which would cause
problems for anyone is using the option for historical reasons.
Fix a regression introduced by new command line processing
(see starting commit 1e2420bca8)
causing activation to be rejected in combination with setting
persistent minor device numbers.
Resolves: rhbz1437611
Fixes command defs related to creating a new thin pool and
then a new thin lv in the new pool.
1. lvcreate --size --virtualsize --thinpool
Needs a cmd def, it was missing.
The def is unique by the three required
options: size, virtualsize and thinpool.
2. lvcreate --size --virtualsize --thinpool VG
Needs a cmd def, it was missing.
The def is unique by the three required
options: size, virtualsize and thinpool,
and one required positional arg: VG.
3. lvcreate --thin --virtualsize --size LV_new|VG
This existing def should not accept an optional
--type thin, which if used makes it indistinct
from another def.
4. lvcreate --size --virtualsize VG
This existing def should not accept an optional
--type thin or --thin, which if used makes it
indistinct from other defs (e.g. 3)
This reverts commit 642d682d8d.
Using the thinpool option with this cmd def makes it
indistinct from other cmd defs where thinpool is a
required option.
lvcreate --thinpool POOL1 -L 100M --virtualsize 100M snapper_thinp
https://bugzilla.redhat.com/1434027
(The general rule is that a command is accepted if it is unambiguous.
The combination -L -V --thinpool uniquely identifies the operation.)
Systematically outline every combination of:
--type striped, --type mirror, --type raid, --mirrors, --stripes
and make sure each is assigned to one specific cmd def.
This revealed that a new command def is needed for
lvcreate that uses both --mirrors and --stripes
but no --type option.
The use of LVCREATE_RAID shortcut for an option set
resulted in mirrors/stripes being included in optional
opts set when they were already in the required list.
As was recently done with relative signes for sizes/extents,
limit the signs used with the mirrors option, e.g.
lvcreate --mirrors now does not accept or advertise an
optional minus sign with the value. lvconvert --mirrors
accepts +|-.
The LVCONVERT_RAID shortcut for including options ended
up including mirrors/stripes as optional opts in defs where
they were already required, or in defs where they would
not be used. Remove the option set and specify in each
case only the options wanted.
OO_LVCREATE_CACHE accepts --cachemetadataformat.
Support new option --cachemetadataformat auto|1|2 for caching.
Word 'auto' can be also be given as '0'.
Add new values for different sign variations, resulting in:
size_VAL no sign accepted
ssize_VAL accepts + or -
psize_VAL accepts +
nsize_VAL accpets -
extents_VAL no sign accepted
sextents_VAL accepts + or -
pextents_VAL accepts +
nextents_VAL accepts -
Depending on the command being run, change the option
values for --size, --extents, --poolmetadatasize to
use the appropriate value from above.
lvcreate uses no sign (but accepts + and ignores it).
lvresize accepts +|- for a relative change.
lvextend accepts + for a relative change.
lvreduce accepts - for a relative change.
In lvcreate/lvconvert, --poolmetdatasize can only be an
absolute value, but in lvresize/lvextend, --poolmetadatasize
can be given a + relative value.
The val types only currently support relative values that
go in both directions +|-. Further work is needed to add
val types that can be relative in only one direction, and
switching various option values to one those depending on
the command name. Then poolmetdatasize will not appear
with a +|- option in lvcreate/lvconvert, and will
appear with only the + option in lvresize/lvextend.
There was confusion in the code about whether or not the
--size option accepted a sign. Make it consistent and clear
that it does.
This exposes a new problem in that an option can only
accept one value type, e.g. --size can only accept a
signed number, it cannot accept a positive or negative
number for some commands and reject negative numbers for
others.
In practice, lvcreate accepts only positive --size
values and lvresize accepts positive or negative --size
values. There is currently no way to encode this
difference. Until that is fixed, the man page output
is hacked to avoid printing the [+|-] prefix for sizes
in lvcreate.
Add/remove the SECONDARY_SYNTAX flag to cmd defs.
cmd defs with this flag will be listed under the
ADVANCED USAGE man page section, so that the main
USAGE section contains the most common commands
without distraction.
- When multiple cmd defs do the same thing, one variant
can be displayed in the first list.
- Very advanced, unusual or uncommon commands should be
in the second list.
- Combine the equivalent lvconvert --type raid defs.
(Two cmd defs must be different without relying
on LV type, which are not known at the time the
cmd def is matched.)
- Remove unused optional options from lvconvert --stripes,
and lvconvert --stripesize.
- Use Number for --stripes_long val type.
- Combine the cmd def for raid reshape cleanup into the
existing start_poll cmd def (they were duplicate defs).
Calls into the raid code from a poll opertion will be
added.
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
There are two kinds of common options:
1. options common to all variants of a given command name
2. options common to all lvm commands
Previously, both kinds of common options were listed together
under "Common options". Now the first are printed under
"Common options for command" (when needed), and the second
are printed under "Common options for lvm" (always).
The --type option has previously been accepted for
lvresize/lvextend. Using it did not affect the operation
of the command. The value was simply verified as matching
the current seg type of the LV.
For this syntax:
lvconvert --thinpool LV1 --poolmetadata LV2
lvconvert --cachepool LV1 --poolmetadata LV2
Restore the metadata swapping behavior in addition to
the pool creation behavior. When LV1 is already a pool,
the metadata LV will be swapped with LV2.
When LV1 is not a pool, it will be converted to a
pool using the specified LV for metadata.
This syntax is no longer advertised because of the
ambiguous behavior. The primary syntaxes for pool
creation and metadata swapping will be the advertised
methods.
This reverts commit 717363bb94.
These alternate forms for swapping metadata cannot be
distinguished from the command for creating a pool.
If we were to add these alternate forms for swapping
metadata, we would need to overload the pool creation
command defs, making those definitions ambiguous.
