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There's a window between doing VG read and checking PV device size
against real device size. If the device is removed in this window,
the dev cache still holds struct device and pv->dev still references
that and that PV is not marked as missing. However, if we're trying
to get size for such device, the open fails because that device
doesn't exists anymore.
We called existing pv_dev_size in _check_pv_dev_sizes fn. But
pv_dev_size assigned a size of 0 if the dev_get_size it called failed
(because the device is gone).
So call the dev_get_size directly and check for the return code
in _check_pv_dev_sizes and go further only if we really know the
device size. This is to avoid confusing warning messages like:
Device /dev/sdd1 has size of 0 sectors which is smaller than corresponding PV size of 31455207 sectors. Was device resized?
One or more devices used as PVs in VG helter_skelter have changed sizes.
While running on F24 a number of warnings were being emitted from using the
deprecated GObject instead of GLib. Tested on python 3.4 and 3.5.
Signed-off-by: Tony Asleson <tasleson@redhat.com>
Python 3.5 in F24 was throwing the following exception:
Traceback (most recent call last):
File "/usr/lib/python3.5/site-packages/lvmdbusd/main.py", line 73, in process_request
req.run_cmd()
File "/usr/lib/python3.5/site-packages/lvmdbusd/request.py", line 73, in run_cmd
self.register_error(-1, st)
File "/usr/lib/python3.5/site-packages/lvmdbusd/request.py", line 123, in register_error
self._reg_ending(None, error_rc, error)
File "/usr/lib/python3.5/site-packages/lvmdbusd/request.py", line 115, in _reg_ending
self.cb_error(self._rc_error)
File "/usr/lib64/python3.5/site-packages/dbus/service.py", line 669, in <lambda>
keywords[error_callback] = lambda exception: _method_reply_error(connection, message, exception)
File "/usr/lib64/python3.5/site-packages/dbus/service.py", line 293, in _method_reply_error
exception))
File "/usr/lib64/python3.5/traceback.py", line 136, in format_exception_only
return list(TracebackException(etype, value, None).format_exception_only())
File "/usr/lib64/python3.5/traceback.py", line 442, in __init__
if (exc_value and exc_value.__cause__ is not None
AttributeError: 'str' object has no attribute '__cause__'
This was caused because we were calling the dbus error callback with a
string instead of an actual exception. On python 3.4 this was apparently
OK, but not with 3.5. Corrected to pass the exception to error callback.
Change tested on both python 3.4 and 3.5.
Reported-by: Vratislav Podzimek <vpodzime@redhat.com>
Signed-off-by: Tony Asleson <tasleson@redhat.com>
Specifying an output width of 0 now leads to a default minimum width
taken from the width of the column heading. (Most fields should use
this.)
Components of field names are generally separated by underscores (which
are optional at run-time). (Dropped 3 duplicate fields now covered by
this rule.)
Each field heading must be unique and generally doesn't have spaces
between words (which get capitalised) unless they are already short and
the fields are normally longer or clarity demands it.
With the recent conversion of pvcreate/pvremove to the
common toollib processing function, skipping in-use PVs
in _process_pvs_in_vg prevented them from being protected
as intended by the in-use flag.
The processing code for pvcreate/pvremove checks for the
in-use state itself and prevents using an in-use PV.
If a PV is skipped, it looks like an unused device and
is not protected from being used in pvcreate/pvremove.
This command option can be used to trigger a D-Bus
notification independent of the usual notifications
that are sent from other commands as an effect of
changes to PV/VG/LV state. If lvm is not built with
dbus notification support or if notify_dbus is disabled
in the config, this command will exit with an error.
When a command modifies a PV or VG, or changes the
activation state of an LV, it will send a dbus
notification when the command is finished. This
can be enabled/disabled with a config setting.
The code in _print_historical_lv function works with temporary
"descendants_buffer" that is allocated and freed within this
function.
When printing text out, we used "outf" macro which called
"out_text" fn and it checked return value and if failed,
the macro called "return_0" automatically. But since we
use the temporary buffer, if any of the out_text calls
fails, we need to deallocate this buffer properly - that's
the "goto_out", otherwise we'll be leaking memory.
So add new "outfgo" helper macro which does the same as "outf",
but it calls "goto_out" instead of "return_0" so we can jump
to a cleanup hook at the end.
- stdout/stderr for test output
- debug.log* for daemon output
- use install instead of cp for DBus config
- use system bus
- DBus reloads on new file. Better having it created with correct
permissions.
Notes:
- Squashed commits from mcsontos development branch
- Still disabled at this time
Signed-off-by: Tony Asleson <tasleson@redhat.com>
Using lvm1 metadata with lvmetad is not generally allowed,
but nothing has prevented creating new lvm1 metadata with
lvmetad (missing error checking in pvcreate/vgcreate.)
Various tests are using lvm1 with lvmetad and happen to
work because of the missing error checks.
This commit fixes the tests so they won't fail when the
lvm1/lvmetad error checking is fixed. A new variable
LVM_TEST_LVM1 is defined and is used in the scripts to
decide if lvm1 metadata should be tested. LVM_TEST_LVM1
is not defined when lvmetad is being tested, and the
combination of LVM_TEST_LVM1 and LVM_TEST_LVMETAD can
be used to verify the desired lvmetad+lvm1 behavior.
Historical LV is valid as long as there is at least one live LV among
its ancestors. If we find any invalid (dangling) historical LVs, remove
them automatically.
The vg_strip_outdated_historical_lvs iterates over the list of historical LVs
we have and it shoots down the ones which are outdated.
Configuration hook to set the timeout will be in subsequent patch.
The metadata/record_lvs_history is global switch which enables or
disables recording historical LVs in metadata.
If both metadata/record_lvs_history=1 lvm.conf option and
--nohistory command switch is used at the same time, the
--nohistory prevails.
