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This is rebased and edited version of the original design and
patch proposed by Jun'ichi Nomura:
http://www.redhat.com/archives/dm-devel/2007-April/msg00025.html
This patch defines operators and structures that will be used
to store the report selection against which the actual values
reported will be checked.
Selection operators
-------------------
Comparison operators:
=~ - Matching regular expression.
!~ - Not matching regular expression.
= - Equal to.
!= - Not equal to.
>= - Greater than or equal to.
> - Greater than
<= - Less than or equal to.
< - Less than.
Logical and grouping operators:
&& - All fields must match
, - All fields must match
|| - At least one field must match
# - At least one field must match
! - Logical negation
( - Left parenthesis
) - Right parenthesis
This makes it easier to check against the fields (following patches for
report selection) and check whether size units are allowed or not
with the field value.
Use NAME_LEN constant to simplify creation of device name.
Since the max size should be already tested in validation,
throw INTERNAL_ERROR if the size of vg/lv is bigger then NAME_LEN.
Let's use the size of origin as the real base for percenta calculation,
and 'silenly' add needed metadata space for snapshot.
So now command 'lvcreate -s -l100%ORIGIN vg/lv' should always create a
snapshot to handle full device overwrite.
Expresing -lXX%LV is not valid for snapshot, but error message for
snapshost case was not complete and missed %ORIGIN.
Also document correct settings for in manpage properly where
it missed %PVS.
While polling for snapshot, detect first the snapshot still
exits. It's valid to have multiple polling threads watching
for the same thing and just 1 can 'win' the finish part.
All others should nicely 'fail'.
If the we are polling an LV due to some sort of conversion and it
becomes inactive, a rather worrisome message is produced, e.g.:
" ABORTING: Mirror percentage check failed."
We can cleanly exit if we do a simple check to see if the LV is
active before performing the check. This eliminates the scary
message.
When creating a cache LV with a RAID origin, we need to ensure that
the sub-LVs of that origin properly change their names to include
the "_corig" extention of the top-level LV. We do this by first
performing a 'lv_rename_update' before making the call to
'insert_layer_for_lv'.
The thin-generic.profile contains settings for thin/thin pool volumes
suitable for generic environment/use containing default settings.
This allows users to change the global lvm.conf settings at will
and still keep the original settings for volumes that have this
thin profile assigned already.
Internal reporting function cannot handle NULL reporting value,
so ensure there is at least dummy label.
So move dummy_lable from tools/reporter.c and use it for all
report_object() calls in lib/report/report.c.
(Fixes RHBZ 1108394)
Simlify lvm_report_object initialization.
More updates to manglename option.
Add reference to LVM2 resource page, since for a long time,
this is the right places for sources for libdevmapper....
Add more time for tests, since debug kernels are getting slower...
and we add more and more tests.
However many test should be shortened to avoid testing disk-perfomance
and focus on lvm functionality...
(Often we should probably test with inactive volumes when we check
metadata operation of lvm2)
We may need to support option for 'DEEP' longer testing.
Also something like LVM_TEST_TIMEOUT_FACTOR might be useful
though it would be much better if test suite could approximete
from system perfomance test lenght...
Enable 'retry' deactivation also in 'cleanup' phase.
It shouldn't be mostly needed - however udev now produces
more and more completelny non-synchronizable device opens,
so even for orphan devices we can't easily predict where
udevd opens devices.
So it's more preferable here to log error about device being open
and retry clean, but let the command proceed.
And use ifdefs there, not exposing it in the tool code itself.
Later in the future, we should probably make the PIDFILE and
daemon checking code available also in case the daemon itself
is not built.
