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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.
Internal _alloc_init() is only called from allocate_extents(),
which already does prevent usage of virtual segments.
So mark as internal error early and do not process it any further.
Add new test for lv_is_snapshot().
Also move few other bitchecks into same place as remaining bit tests.
TODO: drop lv_is_merging_origin() and keep using lv_is_merging().
The problem addressed by this workaround no longer
seems to exist, so remove it. PVs with no mdas
no longer appear in both their actual VG and in
the orphan VG.
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.
Use common _lvname_disp to report lv_parent. The _lvname_disp
takes care of properly marking LVs which are not visible - such
LVs are always enclosed in brackets when reported within any
other field.
For example, thin pool over RAID.
Before:
$ lvs -a -o name,lv_parent,data_lv,metadata_lv vg
LV Parent Data Meta
cache_pool [cache_pool_tdata] [cache_pool_tmeta]
[cache_pool_tdata] cache_pool
[cache_pool_tdata_rimage_0] cache_pool_tdata
[cache_pool_tdata_rimage_1] cache_pool_tdata
[cache_pool_tdata_rmeta_0] cache_pool_tdata
[cache_pool_tdata_rmeta_1] cache_pool_tdata
[cache_pool_tmeta] cache_pool
[cache_pool_tmeta_rimage_0] cache_pool_tmeta
[cache_pool_tmeta_rimage_1] cache_pool_tmeta
[cache_pool_tmeta_rmeta_0] cache_pool_tmeta
[cache_pool_tmeta_rmeta_1] cache_pool_tmeta
[lvol0_pmspare]
With this patch applied:
$ lvs -a -o name,lv_parent,data_lv,metadata_lv vg
LV Parent Data Meta
cache_pool [cache_pool_tdata] [cache_pool_tmeta]
[cache_pool_tdata] cache_pool
[cache_pool_tdata_rimage_0] [cache_pool_tdata]
[cache_pool_tdata_rimage_1] [cache_pool_tdata]
[cache_pool_tdata_rmeta_0] [cache_pool_tdata]
[cache_pool_tdata_rmeta_1] [cache_pool_tdata]
[cache_pool_tmeta] cache_pool
[cache_pool_tmeta_rimage_0] [cache_pool_tmeta]
[cache_pool_tmeta_rimage_1] [cache_pool_tmeta]
[cache_pool_tmeta_rmeta_0] [cache_pool_tmeta]
[cache_pool_tmeta_rmeta_1] [cache_pool_tmeta]
[lvol0_pmspare]
Do not mix dm_report_field_set_value and _field_set_value and
use single function call throughout for clarity. The same applies
for dm_report_field_string and _string_disp.
Fix regression caused by commit c2d4330f27
which removed the dm_pool_strdup for the cache policy name in
_cache_policy_disp report function.
This regression was hit with buffered reporting only (which is
used by default). The reason is that for buffered reporting, we're
iterating over LVs in VG (process_each_lv) while gathering
all the information that is needed for the report. In this case,
the LV's cache policy name has not been duped, but only the pointer
to the original VG buffer was stored. When the LV iteration finished,
the VG buffer was freed and any report to output called later
(dm_report_output call) accessed already freed VG data.
This didn't appear if unbuffered reporting was used (--unbuffered)
because in this case, the data were reported to output as
soon as they were processed, hence it was reported to output
before the VG data was freed.
