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Check for dm-raid target version with non-standard raid4 mapping expecting the dedicated
parity device in the last rather than the first slot and prohibit to create, activate or
convert to such LVs from striped/raid0* or vice-versa in order to avoid data corruption.
Add related tests to lvconvert-raid-takeover.sh
Resolves: rhbz1388962
The dm-raid target now rejects device rebuild requests during ongoing
resynchronization thus causing 'lvconvert --repair ...' to fail with
a kernel error message. This regresses with respect to failing automatic
repair via the dmeventd RAID plugin in case raid_fault_policy="allocate"
is configured in lvm.conf as well.
Previously allowing such repair request required cancelling the
resynchronization of any still accessible DataLVs, hence reasoning
potential data loss.
Patch allows the resynchronization of still accessible DataLVs to
finish up by rejecting any 'lvconvert --repair ...'.
It enhances the dmeventd RAID plugin to be able to automatically repair
by postponing the repair after synchronization ended.
More tests are added to lvconvert-rebuild-raid.sh to cover single
and multiple DataLV failure cases for the different RAID levels.
- resolves: rhbz1371717
Commit 199697accf rerouted funtion
for priting cache volume origin to lvm2app app function - which
however had a bug. So restore the original functionality
and print correct LV as cache origin LV.
In the case there is no active thin volume, report thin pool
as lock holder. This fixed function like lvextend
which either expecte lock holder LV is some active thin
or 'possibly' inactive thin pool.
Add function to obtain percentage value for cache lv_seg_status.
This API is rather evolving 'middle' step as the ultimate goal
is segment API fuctionality.
But first we need to be clear at reporting level which values
are needed to be reported for which LVs and segments.
Fix reporting of Fail thin-pool target status
as attr[8] letter 'F'.
Report 'needs_check' status from thin-pool target via
attr field [4] (letter 'c'/'C'), and also via CheckNeeded field.
TODO: think about better name here?
TODO: lots of prop_not_implemented_set
Address this gcc warning:
metadata/lv.c:243: warning: initialized field overwritten
metadata/lv.c:243: warning: (near initialization for 'status.seg_status')
Present with e.g.: gcc version 4.3.2 (Debian 4.3.2-1.1)
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.
The associated devices,metadata_devices,seg_pe_ranges and
seg_metadata_le_ranges are reported as genuine string lists now.
This allows for using the items separately in -S|--select
(so searching for subsets etc.) and also it allows for
configuring the separator using report/list_item_separator
which may be useful in scripts (however, we'll enable this
only for seg_le_metadata_ranges and not for devices,seg_pe_ranges
and seg_metadata_devices for compatibility reasons - see following
patch).
When reporting on LVs, take the end of the range from the size of the
underlying (hidden) LV rather than the logical size of the current
segment (that PVs use).
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.
Include brackets for the name if the dev is invisible.
This change applies to all callers of _format_pvsegs fn:
- lvseg_devices (the "lvs -o devices")
- lvseg_metadata_devices (the "lvs -o metadata_devices)
- lvseg_seg_pe_ranges (the "lvs -o seg_pe_ranges")
- lvseg_seg_metadata_le_ranges (the "lvs -o seg_metadata_le_ranges")
The common lv_pool_lv fn avoids code duplication and also
the reporting part now uses _lvname_disp and _uuid_disp to display
name and uuid respectively, including brackets for the name if the
dev is invisible.
The common lv_metadata_lv fn avoids code duplication and also
the reporting part now uses _lvname_disp and _uuid_disp to display
name and uuid respectively, including brackets for the name if the
dev is invisible.
The common lv_data_lv fn avoids code duplication and also
the reporting part now uses _lvname_disp and _uuid_disp to display
name and uuid respectively, including brackets for the name if the
dev is invisible.
The common lv_mirror_log_lv fn avoids code duplication and also
the reporting part now uses _lvname_disp and _uuid_disp to display
name and uuid respectively, including brackets for the name if the
dev is invisible.
The common lv_origin_lv fn avoids code duplication and also
the reporting part now uses _lvname_disp and _uuid_disp to display
name and uuid respectively, including brackets for the name if the
dev is invisible.
The common lv_convert_lv fn avoids code duplication and also
the reporting part now uses _lvname_disp and _uuid_disp to display
name and uuid respectively, including brackets for the name if the
dev is invisible.
Add metadata_devices and seg_metadata_le_ranges report fields.
Currently only defined for raid, but should probably be extended
to all other segment types that don't report all their device
usage in the 'devices' field.
Change logic and naming of some internal API functions.
cache_set_mode() and cache_set_policy() both take segment.
cache mode is now correctly 'masked-in'.
If the passed segment is 'cache' segment - it will automatically
try to find 'defaults' according to profiles if the are NOT
specified on command line or they are NOT already set for cache-pool.
These defaults are never set for cache-pool.
