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This refactors the code for autoactivation. Previously,
as each PV was found, it would be sent to lvmetad, and
the VG would be autoactivated using a non-standard VG
processing function (the "activation_handler") called via
a function pointer from within the lvmetad notification path.
Now, any scanning that the command needs to do (scanning
only the named device args, or scanning all devices when
there are no args), is done first, before any activation
is attempted. During the scans, the VG names are saved.
After scanning is complete, process_each_vg is used to do
autoactivation of the saved VG names. This makes pvscan
activation much more similar to activation done with
vgchange or lvchange.
The separate autoactivate phase also means that if lvmetad
is disabled (either before or during the scan), the command
can continue with the activation step by simply not using
lvmetad and reverting to disk scanning to do the
activation.
Add support for active cache LV.
Handle --cachemode args validation during command line processing.
Rework some lvm2 internal to use lvm2 defined CACHE_MODE enums
indepently on libdm defines and use enum around the code instead
of passing and comparing strings.
For raid1 use chunksize as bitmap-chunk specification.
Always enforce usage of bitmap - getting comparable outcome
as lvm2 raid support uses.
Add udev_wait after stopping md array - as in fact leg-device
are still in use by target even command has finished.
(mdadm --stop causes WATCH rule wakeup, and
ioctl(STOP_ARRAY) returns IMHO to early - it should finish
and fsync work on leg devices first).
The test was a weak attempt at verifying the special
combination of lvchange/vgchange -aay --sysinit, but
was only looking for lvmetad connection warnings.
Update the warning checks, and check the LV activation
state directly which is the main point.
Rename the test to reflect its purpose of checking
the -aay --sysinit combination.
Update the check about lvmetad running but not used.
Also add tests related to the new lvmetad disabled state.
lvm1 metadata is used here to test the disabled state
because lvm1 metadata is the first condition using the
disabled state.
Improved test script to verify lost mirror image does not
cause mirror corruption while mirror is in use.
TODO: add more cases (lost mlog...), lost image from 3leg mirror...
- 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.
Showing 'u' in the pv_attr reporting field is mostly unnecessary because
most PVs are allocatable, and being allocatable implies it is (u)sed,
and this is already obvious from other fields in the default 'pvs'
output like the VG name.
So move the new (u)sed pv_attr from character position 4 to 1, and only
show it in those rare cases when the PV is not (a)llocatable or the
relevant metadata is missing.
(Scripts should not be using pv_attr, but rather pv_allocatable,
pv_exported, pv_missing, pv_in_use etc.)
This simple tool calls the Manager.Refresh method on the dbus service
to check and see if the dbus service has the most up to date state.
This is to be used for testing to ensure that event driven updates are
working as planned.
Signed-off-by: Tony Asleson <tasleson@redhat.com>
Add tests for the "dmstats report" command:
* report
* report --count
* report --histogram
So far the tests just check the command runs as expected when a
correctly configured stats region exists: validation of output
can be added later.
Add tests for the "dmstats create" command:
* simple whole-device region
* region using --start/--len options
* region using --segments option
* region with precise timestamps (--precise)
* region with histogram bounds (--bounds)
The install target already depends on .tests-stamp - since this
in turn depends on lib/version-expected there is no need to have
this as a dependency of install.
Add initial dmstats tests to 000-basic.sh. These tests ensure that
the dmsetup binary is built and linked correctly when called as
'dmstats' and that the version of the binary matches the expected
library version used for the build.
export LVMDBUSD_SESSION=True to run on the session bus instead
of the system bus so that we can run the unit test without
installing the dbus conf file.
Signed-off-by: Tony Asleson <tasleson@redhat.com>
Reduced the size of LVs created and use actual PE numbers instead of hard
coding them to allow us to work with the loop back devices.
Signed-off-by: Tony Asleson <tasleson@redhat.com>
Ask for confirmation when using pvcreate/pvremove on a PV which is
marked as belonging to a VG, just like we do in case of a PV which
belongs to known VG:
$ pvcreate -ff /dev/sda
Really INITIALIZE physical volume "/dev/sda" that is marked as belonging to a VG [y/n]? n
/dev/sda: physical volume not initialized
$ pvremove -ff /dev/sda
Really WIPE LABELS from physical volume "/dev/sda" that is marked as belonging to a VG [y/n]? n
/dev/sda: physical volume label not removed
There are two basic groups of fields for LV segment device reporting:
- related to LV segment's devices: devices and seg_pe_ranges
- related to LV segment's metadata devices: metadata_devices and seg_metadata_le_ranges
The devices and metadata_devices report devices in this format:
"device_name(extent_start)"
The seg_pe_ranges and seg_metadata_le_ranges report devices in
this format:
"device_name:extent_start-extent_end"
This patch reverts partly what commit 7f74a99502
(v 2.02.140) introduced in this area - it added [] for
hidden devices to mark them for all four fields mentioned above.
We won't be marking hidden devices in devices and metadata_devices
fields.
The seg_metadata_le_ranges field will have hidden devices marked -
it's new enough that we don't need to care about compatibility much
yet.
The seg_pe_ranges is old enough that we shouldn't be changing this
one - so we're reverting to not marking hidden devices here.
Instead, there's going to be a new field "seg_le_ranges" which
is going to replace the seg_pe_ranges and it will mark hidden devices -
this is going to be introduced in a patch later.
So in the end we'll end up with:
(LV segment's devices)
devices field with "device_name(extent_start)" format, not marking hidden devices
seg_pe_ranges field with "device_name:extent_start-extent_end" format, not marking hidden devices (deprecated, new seg_le_ranges should be used instead for standardized format)
seg_le_ranges field with "device_name:extent_start-extent_end" format, marking hidden devices
(LV segment's metadata devices)
metadata_devices field with "device_name:extent_start-extent_end" format, not marking hidden devices
seg_metadata_le_ranges field with "device_name:extent_start-extent_end" format, marking hidden devices
Also, both seg_le_ranges and seg_metadata_le_ranges will honour the
report/list_item_separator setting which can be used to configure
the delimiter used for list items.
So, to sum it up, we will recommend using the new seg_le_ranges and
seg_metadata_le_ranges fields because they display devices with
standard extent range format, they can mark hidden devices and they
honour the report/list_item_separator setting.
We'll be keeping devices,seg_pe_ranges and metadata_devices fields
for compatibility.
Thin pool discard mode set in metadata can be different from the one
actually used if any device underneath does not support that mode. Add
kernel_discard report field to make it possible to see this difference.
To handle multiple VGs with the same name.
Simply using the VG name is ambiguous, and
lvmetad requires the VG uuid be used to
specify which one is meant.
When reading older lvm2 metadata for cache-pool - we now handle more
extended syntax - basically we want to enter most setting when
actually creating cached LV.
For this new validation code has been added. However older metadata
without new settings set is now found as invalid.
Fix it by adding default settings for cache policy mq
and cache mode writethrough.
Use delay_dev to slow down mirror sync so we could more
easily check for race and proper reject of parallel mirror
leg addition/reduction.
Also expose fail in mirror allocation of parallel leg.
Rather then skipping whole test - just do not use it.
Failing tests that have required delay need to deal with reality
and shell either check for HAVE_DM_DELAY and skip portion
of test or using should when needed.
If two PVs have different VGs with the same name
(different uuids), one of the VGs is ignored by
lvmetad. A FIXME exists in lvmetad to find a
better response.
Drop already tested 'threshold & create' which is in
lvextend-thin-full.sh
Count with now match faster 'dmeventd' wakeup on watermark
as it's now nearly instant after crossing threshold value.
If the underlaying device has actually bigger read-ahead settings,
let it pass.
But anyway switch to 512 strip-size to get really high R-A sector count.
Avoid running tests, when prefix already exist in the system.
As prefix just uses PID number, we may hit a case for long
running tests, where devices from some previous runs were not
properly cleared away - detect this and fail early.
(Such machine should be inspected and fixed).
$ lvs -o name,tags vg
LV LV Tags
lvol0
lvol1 mytag
Before this patch:
$ lvs -o name,tags vg -S 'tags=""'
Failed to parse string list value for selection field lv_tags.
Selection syntax error at 'tags=""'.
Use 'help' for selection to get more help.
(and the same for -S 'tags={}' and -S 'tags=[]')
With this patch applied:
$ lvs -o name,tags vg -S 'tags=""'
LV LV Tags
lvol0
(and the same for -S 'tags={}' and -S 'tags=[]')
Somehow raid tests landed in plain cache - separte them out
so they properly check for have_raid.
Check we do not support strip option with cache-pool creation.
Certain stacks of cached LVs may have unexpected consequences.
So add a warning function called when LV is cached to detect
such caces and WARN user about them - the best we could do ATM.
Ensure make clean cleans any left-over file from their previous
location so they are not in conflict with new ones.
Also hide error message when .commands file is not present.
Hopefull 4.3 will be fixed and test will be updated to let
raid test running again.
Meanwhile using md-raid may effectively kill kernel,
so leave at least other tests running.
Don't abort test when clvmd processes two VGs concurrently.
CLVMD: ioctl/libdm-iface.c:1940 Internal error: Performing unsafe table load while 3 device(s) are known to be suspended: (253:19)
Since our test environment runs also in non-real-udev world,
it's using /etc/.cache file with scanned files.
So in this case it is mandatory the user runs 'vgscan'
after a device reappears in the system.
This 'first' lvm2 command then fixes metadata (just like vgs did).
With thin-pool kernel target module 1.13 it's now support usage of
external origin with sizes which are not 'alligned' with chunk size
of thin-pool.
Enable lvm2 support for this and also fix reporting of data_percent
usage for case sizes are not alligned.
More exact clean of library exported symbols files.
Also use $(firstword) test to check for empty string
so 'make clean' has now cleaner condensed look.
Clean also created include links.
Set LVM_TEST_THIN_REPAIR_CMD to /bin/false for test which
doesn't need it.
This way - even if on the system there is no such tool present,
test will not result with warning about missing tool.
Also remove from Makefile settings of TEST vars which are set in
through /lib/paths - this also allows to override them in test.
Since now we enable those by default when compiled with those daemons,
explicitely disable them in tests when needed.
Alphabetically sort configurables.
