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Allow restoring metadata with thin pool volumes.
No validation is done for this case within vgcfgrestore tool -
thus incorrect metadata may lead to destruction of pool content.
The heading 'Copy%' is specific to PVMOVE volumes, but can be generalized
to apply to LVM mirrors also. It is a bit awkward to use 'Copy%' for
RAID 4/5/6, however - 'Sync%' would be more appropriate. This is why
RAID 4/5/6 have not displayed their sync status by any means available to
'lvs' yet.
Example (old):
[root@hayes-02 lvm2]# lvs vg
LV VG Attr LSize Pool Origin Data% Move Log Cpy%Sy Convert
lv vg -wi-a---- 1.00g
raid1 vg rwi-a-r-- 1.00g 100.00
raid4 vg rwi-a-r-- 1.01g
raid5 vg rwi-a-r-- 1.01g
raid6 vg rwi-a-r-- 1.01g
This patch changes the heading to 'Cpy%Sync' and allows RAID 4/5/6 to print
their sync percent in this field.
Example (new):
[root@hayes-02 lvm2]# lvs vg
LV VG Attr LSize Pool Origin Data% Move Log Cpy%Sync Convert
lv vg -wi-a---- 1.00g
raid1 vg rwi-a-r-- 1.00g 100.00
raid4 vg rwi-a-r-- 1.01g 100.00
raid5 vg rwi-a-r-- 1.01g 100.00
raid6 vg rwi-a-r-- 1.01g 100.00
Try to bring the lvmetad usage text and man page closer to the code.
There seem to be 3 useful ways to use -d with lvmetad at the moment:
-d all
-d wire
-d debug
(They can also be comma-separated like -d wire,debug.)
Prior to the last release, -d, -dd and -ddd were supported.
Fail if an unrecognised debug arg is supplied on the command line.
Change -V to report the same version as the lvm binary: previously it
just reported version 0.
blkdeactivate - utility to deactivate block devices
Traverses the tree of block devices and tries to deactivate them.
Currently, it supports device-mapper-based devices together with LVM.
See man/blkdeactivate.8 for more info.
It is targeted for use during shutdown to properly deactivate the
whole block device stack - systemd and init scripts are provided as
well. However, it might be used directly on command line too.
Please, see the commentary at the top of the blkdeactivate script
for dependencies and versions of other utilities required.
Update code for lvconvert.
Change the lvconvert user interface a bit - now we require 2 specifiers
--thinpool takes LV name for data device (and makes the name)
--poolmetadata takes LV name for metadata device.
Fix type in thin help text -z -> -Z.
Supported is also new flag --discards for thinpools.
Accept -q as the short form of --quiet.
Suppress non-essential standard output if -q is given twice.
Treat log/silent in lvm.conf as equivalent to -qq.
Review all log_print messages and change some to
log_print_unless_silent.
When silent, the following commands still produce output:
dumpconfig, lvdisplay, lvmdiskscan, lvs, pvck, pvdisplay,
pvs, version, vgcfgrestore -l, vgdisplay, vgs.
[Needs checking.]
Non-essential messages are shifted from log level 4 to log level 5
for syslog and lvm2_log_fn purposes.
Update lvchange to allow change of 'zero' flag for thinpool.
Add support for changing discard handling.
N.B. from/to ignore could be only changed for inactive pool.
Add arg support for discard.
Add discard ignore, nopassdown, passdown (=default) support.
Flags could be set per pool.
lvcreate [--discard {ignore|no_passdown|passdown}] vg/thinlv
When --sysinit -a ay is used with vg/lvchange and lvmetad is up and running,
we should skip manual activation as that would be a useless step - all volumes
are autoactivated once all the PVs for a VG are present.
If lvmetad is not active at the time of the vgchange --sysinit -a ay
call, the activation proceeds in standard 'manual' way.
This way, we can still have vg/lvchange --sysinit -a ay called
unconditionally in system initialization scripts no matter if lvmetad
is used or not.
We're refererring to 'activation' all over the code and we're talking
about 'LVs being activated' all the time so let's use 'activation/activate'
everywhere for clarity and consistency (still providing the old
'available' keyword as a synonym for backward compatibility with
existing environments).
Support has many limitations and lots of FIXMEs inside,
however it makes initial task when user creates a separate LV for
thin pool data and thin metadata already usable, so let's enable
it for testing.
Easiest API:
lvconvert --chunksize XX --thinpool data_lv metadata_lv
More functionality extensions will follow up.
TODO: Code needs some rework since a lot of same code is getting copied.
Calling vgscan alone should reuse information from the lvmetad (if running).
The --cache option should initiate direct device scan and update lvmetad
appropriately (if running).
This is mainly for vgscan to behave consistently compared to pvscan.
Fix regression in man page. The chunk size is in kilobyte units on command line
input though in the source code we work with sector size unit
so make it clear in the man page.
Update chunksize for thin pool in man page - it's max value is 1024M == 1G.
Fix warning range message to show proper max value.
Hold global lock in pvscan --lvmetad. (This might need refinement.)
Add PV name to "PV gone" messages.
Adjust some log message severities. (More changes needed.)
Add 'blkdevname' and 'blkdevs_used' field to dmsetup info -c -o.
Add 'blkdevname' option to dmsetup ls --tree to see block device names.
Add '-o options' to dmsetup deps and ls to select device name type on output.
