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Extract restorable PV creation parameters from struct pvcreate_params into
a separate struct pvcreate_restorable_params for clarity and also for better
maintainability when adding any new items later.
The motivation to grab the global lock is to avoid a scan and metadata parsing
for each PV, but the cost of obtaining metadata is _mostly_ mitigated by having
lvmetad around. Not taking the global lock improves throughput when multiple pvs
or related commands are running in parallel, like in RHEV.
Remove no longer needed warning for unsuppoted discards
for non-power-2 lvcreate commands.
(Missed from the patch for the same update in lvchange made
by commit dde5a6c52b)
Configurable settings for thin pool create
if they are not specified on command line.
New supported lvm.conf options are:
allocation/thin_pool_chunk_size
allocation/thin_pool_discards
allocation/thin_pool_zero
Move common functions for lvcreate and lvconvert.
get_pool_params() - read thin pool args.
update_pool_params() - updates/validates some thin args.
It is getting complicated and even few more things will be
implemented, so to avoid reimplementing things differently
in lvcreate and lvconvert code has been splitted
into 2 common functions that allow some future extension.
Use log_warn to print non-fatal warning messages.
Use of log_error would confuse checker for testing
whether proper error has been reported for some real error.
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.
In process_each_pv() if we haven't yet scanned and the PV appears
to be an orphan, we must scan the other PVs looking for mdas that
reference it to find out what VG it is in.
1. If the PV has no mdas, we must scan.
2. If the PV has an mda that is not ignored we do not need to scan.
3. If the PV has an mda that is ignored, we do need to scan.
This patch fixes case 3.
> pvs -o +mda_count,vg_mda_count /dev/loop[0123]
PV VG Fmt Attr PSize PFree #PMda #VMda
/dev/loop0 vg3 lvm2 a- 96.00m 96.00m 0 1
/dev/loop1 vg3 lvm2 a- 96.00m 96.00m 1 1
/dev/loop2 vg2 lvm2 a- 96.00m 96.00m 1 2
/dev/loop3 vg2 lvm2 a- 28.00m 28.00m 1 2
Before:
> pvs /dev/loop2 /dev/loop3 /dev/loop0 /dev/loop1 --unbuffered
PV VG Fmt Attr PSize PFree
/dev/loop2 lvm2 a-- 100.00m 100.00m
/dev/loop3 vg2 lvm2 a-- 28.00m 28.00m
/dev/loop0 lvm2 a-- 100.00m 100.00m
/dev/loop1 vg3 lvm2 a-- 96.00m 96.00m
After:
> pvs /dev/loop2 /dev/loop3 /dev/loop0 /dev/loop1 --unbuffered
PV VG Fmt Attr PSize PFree
/dev/loop2 vg2 lvm2 a-- 96.00m 96.00m
/dev/loop3 vg2 lvm2 a-- 28.00m 28.00m
/dev/loop0 vg3 lvm2 a-- 96.00m 96.00m
/dev/loop1 vg3 lvm2 a-- 96.00m 96.00m
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).
Read lvm.conf setting for monitoring for each command. So we should not
activate monitoring if the default compilation is set to monitor during
lvconvert commnads.
Patch also removes check for clustered VG and allows to disable monitoring
for clustered VG with the assumption, the problem with monitoring and dmeventd
flag passing for INGNORE is already fixed.
We want to keep this logic -
when LV is extend - extend the LV by at least given amount,
when LV is reduced - reduce the LV by at most given amount.
So for this the rounding needs to be used.
Current logic which seems to satisfy give rule is to round up all
extent values for LV resize upward except for values with '-' sign
that are round downward.
This patch also fixes the problem when lvextend --use-polices tried
to extend LV the by i.e. 20% - but the resulting 20% were smaller
the extent size thus before this patch no extension happened.
Remove DM_THIN_ERROR_DEVICE_ID from API.
Remove API warning.
Drop code that was using DM_THIN_ERROR_DEVICE_ID (already commented)
Remove debug message which slipped in through some previous commit.
Since activation of pool is now independent on thin activation,
user may do whatever he needs - thought preferable thin should stay alive,
but it it will be found inactivate, update_pool will bring the pool up.
To ensure we properly handle LV cluster locking - explicitely do
not allow to change the availability of the thin pool that is in use
for some thin LV.
As soon as the thin volume is created the only way to activate pool
is via implicit dependency.
Ignore thinpool open count for lv/vgchange operations.
leaving behind the LVM-specific parts of the code (convenience wrappers that
handle `struct device` and `struct cmd_context`, basically). A number of
functions have been renamed (in addition to getting a dm_ prefix) -- namely,
all of the config interface now has a dm_config_ prefix.
Move the free_vg() to vg.c and replace free_vg with release_vg
and make the _free_vg internal.
Patch is needed for sharing VG in vginfo cache so the release_vg function name
is a better fit here.
Since format instances will use own memory pool, it's necessary to properly
deallocate it. For now, only fid is deallocated. The PV structure itself
still uses cmd mempool mostly, but anytime we'd like to add a mempool
in the struct physical_volume, we can just rename this fn to free_pv and
add the code (like we have free_vg fn for VGs).
While STRIPE_SIZE_LIMIT * 2 is basically UINT_MAX, 32bit integer
value can already overflow durin arg size parsing.
(This really happens in test where --stripesize 4294967291 is used,
in s390x uint overflow and this test is ineffective.)
Fixing some const warnings - with API change in:
int vg_extend(struct volume_group *vg, int pv_count, const char *const *pv_names,
Change is needed - as lvm2api expects const behaviour here.
So vg_extend() is doing local strdup for unescaping.
skip_dev_dir return const char* from const char* vg_name.
Rest of the patch is cleanup of related warnings.
Also using dm_report_filed_string() API change to simplify
casting in _string_disp and _lvname_disp.
Patch adds extra check for lv_name not being NULL.
Test avoids unneeded strlen call for this case.
Otherwise there is no functional change as test would fail on
size_t comparation even for NULL lv_name (thus there is no risk
of NULL dereference when taking 'true' if branch.
