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Use of display_lvname() in plain log_debug() may accumulate memory in
command context mempool. Use instead small ringbuffer which allows to
store cuple (10 ATM) names so upto 10 full names can be used at one.
We are not keeping full VG/LV names as it may eventually consume larger
amount of RAM resouces if vgname is longer and lots of LVs are in use.
Note: if there would be ever needed for displaing more names at once,
the limit should be raised (e.g. log_debug() would need to print more
then 10 LVs on a single line).
Return 1 on success in pvdisplay_short() and lvdisplay_full()
so commands like vgdisplay are not printinig stracktraces
on successful passes.
As the results of fail/success have been internally ignored for those
calls, it had no other visible side effect - command's return value was
still 0 (success).
Instead of segtype->ops->name() introduce lvseg_name().
This also allows us to leave name() function 'empty' for default
return of segtype->name.
TODO: add functions for rest of ops->
Use lv_is_* macros throughout the code base, introducing
lv_is_pvmove, lv_is_locked, lv_is_converting and lv_is_merging.
lv_is_mirror_type no longer includes pvmove.
Sort out the lvresize calculation code to handle size changes
specified as physical extents as well as logical extents
and to process mirror resizing and raid extensions correctly.
The 'approx alloc' option was masking the underlying problem.
When EOF is detect - it could be either 'Ctrl+C'
or empty stdin.
For Ctrl+C there is visual ^C sign.
For EOF print 'n' so decision is clear in debug print.
The list of strings is used quite frequently and we'd like to reuse
this simple structure for report selection support too. Make it part
of libdevmapper for general reuse throughout the code.
This also simplifies the LVM code a bit since we don't need to
include and manage lvm-types.h anymore (the string list was the
only structure defined there).
Since decisions in the silent mode may not be always obvious,
print skipped prompt with answer 'n'.
Also document '-qq' behaviour (single -q only shuts
logging, while -qq sets silent mode).
Relocate info from thin pool and thin volume segments
to proper code section for segments.
Add discards and thin count status info.
Info is shown with 'lvdisplay --maps' (like for other segments).
For percentage display we need -tpool - so check for layered
device presence here instead of plain pool device.
Also update 'info' - so when pool is 'available' we
display open count for -tpool device instead of mostly
irrelevant pool.
TODO: Maybe we should actually display this open info always?
(even when just -tpool is available, but pool is not)
Emphesize virtual extents for virtual LVs and for
those use 'Virtual extents' instead of 'Logical extents',
so it's immeditatelly visible, which extents do have
straighforward physical backend.
Several fixes for the recent changes that treat allocation percentages
as upper limits.
Improve messages to make it easier to see what is happening.
Fix some cases that failed with errors when they didn't need to.
Fix crashes when first_seg() returns NULL.
Remove a couple of log_errors that were actually debugging messages.
For example, the old call and reference:
find_config_tree_str(cmd, "devices/dir", DEFAULT_DEV_DIR)
...now becomes:
find_config_tree_str(cmd, devices_dir_CFG)
So we're referring to the named configuration ID instead
of passing the configuration path and the default value
is taken from central config definition in config_settings.h
automatically.
Use the field 'origin' for reporting external origin lv name.
For thin volumes with external origin, report the size of
external origin size via:
lvs -o+origin_size
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.
Reformat name and path how the LV is represented with lvm1 compatible option,
to switch to the old way - which had number of problem - i.e. many links
do not exist - since for private devices we are not creating them.
Add more info about thin pools and volumes.
