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5ed7d0cf1d
Normally, the lvm dumpconfig processes only the configuration tree
that is at the top of the cascade. Considering the cascade is:
CONFIG_STRING -> CONFIG_PROFILE -> CONFIG_MERGED_FILES/CONFIG_FILE
...then:
(dumpconfig of lvm.conf only)
raw/~ $ lvm dumpconfig allocation
allocation {
maximise_cling=1
mirror_logs_require_separate_pvs=0
thin_pool_metadata_require_separate_pvs=0
thin_pool_chunk_size=64
}
(dumpconfig of selected profile configuration only)
raw/~ $ lvm dumpconfig --profile test allocation
allocation {
thin_pool_chunk_size=8
thin_pool_discards="passdown"
thin_pool_zero=1
}
(dumpconfig of given --config configuration only)
raw/~ $ lvm dumpconfig --config 'allocation{thin_pool_chunk_size=16}' allocation
allocation {
thin_pool_chunk_size=16
}
The --mergedconfig option causes the configuration cascade to be
merged before processing it with dumpconfig:
(dumpconfig of merged selected profile and lvm.conf)
raw/~ $ lvm dumpconfig --profile test allocation --mergedconfig
allocation {
maximise_cling=1
thin_pool_zero=1
thin_pool_discards="passdown"
mirror_logs_require_separate_pvs=0
thin_pool_metadata_require_separate_pvs=0
thin_pool_chunk_size=8
}
(dumpconfig merged given --config and selected profile and lvm.conf)
raw/~ $ lvm dumpconfig --profile test --config 'allocation{thin_pool_chunk_size=16}' allocation --mergedconfig
allocation {
maximise_cling=1
thin_pool_zero=1
thin_pool_discards="passdown"
mirror_logs_require_separate_pvs=0
thin_pool_metadata_require_separate_pvs=0
thin_pool_chunk_size=16
}
Hence with the --mergedconfig, we are able to see the
configuration that is actually used when processing any
LVM command while using any combination of --config/--profile
options together with lvm.conf file.
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|---|---|---|
| .. | ||
| .exported_symbols | ||
| .gitignore | ||
| args.h | ||
| cmdnames.h | ||
| commands.h | ||
| dmsetup.c | ||
| dumpconfig.c | ||
| errors.h | ||
| formats.c | ||
| lvchange.c | ||
| lvconvert.c | ||
| lvcreate.c | ||
| lvdisplay.c | ||
| lvextend.c | ||
| lvm2cmd-static.c | ||
| lvm2cmd.c | ||
| lvm2cmd.h | ||
| lvm2cmdline.h | ||
| lvm-static.c | ||
| lvm.c | ||
| lvmchange.c | ||
| lvmcmdlib.c | ||
| lvmcmdline.c | ||
| lvmdiskscan.c | ||
| lvreduce.c | ||
| lvremove.c | ||
| lvrename.c | ||
| lvresize.c | ||
| lvscan.c | ||
| Makefile.in | ||
| polldaemon.c | ||
| polldaemon.h | ||
| pvchange.c | ||
| pvck.c | ||
| pvcreate.c | ||
| pvdisplay.c | ||
| pvmove.c | ||
| pvremove.c | ||
| pvresize.c | ||
| pvscan.c | ||
| reporter.c | ||
| segtypes.c | ||
| stub.h | ||
| toollib.c | ||
| toollib.h | ||
| tools.h | ||
| vgcfgbackup.c | ||
| vgcfgrestore.c | ||
| vgchange.c | ||
| vgck.c | ||
| vgconvert.c | ||
| vgcreate.c | ||
| vgdisplay.c | ||
| vgexport.c | ||
| vgextend.c | ||
| vgimport.c | ||
| vgmerge.c | ||
| vgmknodes.c | ||
| vgreduce.c | ||
| vgremove.c | ||
| vgrename.c | ||
| vgscan.c | ||
| vgsplit.c | ||