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This reverts commit fa69ed0bc8.
This code sometimes expects to be presented with a read-only filesystem
(during some boot sequences for example) and copes appropriately with
this and it should not lead to expected error messages that might cause
unnecessary alarm.
lv_name arg is only used without known LV for resolving '*lv'.
Once we know *lv, never use lv_name ever again.
So setting it when passing *lv has not needed.
Add code to support more LVs to be resized through a same code path
using a single lvresize_params struct.
(Now it's used for thin-pool metadata resize,
next user will be snapshot virtual resize).
Update code to adjust percent amount resize for use_policies.
Properly activate inactive thin-pool in case of any pool resize
as the command should not 'deffer' this operation to next activation.
Use common API design and pass just LV pointer to lv_manip.c functions.
Read cmd struct via lv->vg->cmd when needed.
Also do not try to return EINVALID_CMD_LINE error when we
have already openned VG - this error code can only be returned before
locking VG.
We have only 2 users of _lv_active() - one was already checking for ==1
while the other use (_lv_is_active()) could have take '-1' as a sign of having
an LV active. So return 0 and log_debug also the reason while detection
has failed (i.e. in case --driverload n - it's kind of expectable,
but might have confused user seeing just <backtrace>).
This fixes commit f50d4011cd which
introduced a problem when using older lvm2 code with newer libdm.
In this case, the old LVM didn't recognize new _LOG_BYPASS_REPORT flag
that libdm-report code used. This ended up with no output at all
from libdm where log_print_bypass_report was called because the
_LOG_BYPASS_REPORT was not masked properly in lvm2's print_log fn
which was called as callback function for logging.
With this patch, the lvm2 registers separate print_log_libdm logging
function for libdm instead. The print_log_libdm is exactly the same
as print_log (used throughout lvm2 code) but it checks whether we're
printing common line on output where "common" means not going to stderr,
not a warning and not an error and if we are, it adds the
_LOG_BYPASS_REPORT flag so the log_print goes directly to output, not
to any log report.
So this achieves the same goal as in f50d4011cd,
just doing it in a way that newer libdm is still compatible with older
lvm2 code (libdm-report is the only code using log_print).
Looking at the opposite mixture - older libdm with newer lvm2 code,
that won't be compilable because the new log report functionality
that is in lvm2 also requires new dm_report_group_* libdm functions
so we don't need to care here.
Move code from original print_log fn to a separate _vprint_log function
that accepts va_list and make print_log a wrapper over _vprint_log.
The print_log just initializes the va_list and uses it for _vprint_log
call now. This way, we can reuse _vprint_log if needed.
In commit 6ae22125, vgcfgrestore began disabling lvmetad
while running, and rescanned to enable it again at the end,
but missed the rescanning/enabling in the error case.
Reconnect to lvmetad if either the send fails (e.g. lvmetad
was restarted since lvmlockd last connected), or if no
lvmetad connection exists (e.g. lvmetad was started after
lvmlockd so no previous connection existed.)
Currently, a shutdown signal will cause lvmetad to quit
responding to new connections, but not actually exit until
all connections are gone. If a program is maintaining a
long running connection (e.g. lvmlockd, or even an lvm
command) when lvmetad gets a shutdown signal, then all
further commands will hang indefinately waiting for a
response that won't be sent.
With this patch, make lvmetad continue handling new
connections even after a shutdown signal. It will exit
once all connections are gone.
Previously, vgcfgrestore would attempt to vg_remove the
existing VG from lvmetad and then vg_update to add the
restored VG. But, if there was a failure in the command
or with vg_update, the lvmetad cache would be left incorrect.
Now, disable lvmetad before the restore begins, and then
rescan to populate lvmetad from disk after restore has
written the new VG to disk.
Reporting commands can be of different types (even if the command name
is the same):
- pvs command can be either of PVS, PVSEGS or LABEL report type,
- vgs command is of VGS report type,
- lvs command is of LVS or SEGS report type.
Use basic report type when looking for report prefix used for
--configreport option.
This means that:
- 'pvs --configreport pv' applies to PVS, PVSEGS or LABEL report type
- 'vgs --configreport vg' applies to VGS report type
- 'lvs --configreport lv' applies to LVS and SEGS report type
