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o There is still a bit missing
+ all are missing the {PV,VG,LV} # - that is not applicable in LVM2
+ pvdisplay doesn't show how many LVs are contained on it
+ much of the snapshot information isn't available for lvdisplay
o Look at the code for other potiential FIXMEs :)
Lots of changes/very little testing so far => there'll be bugs!
Use 'vgcreate -M text' to create a volume group with its metadata stored
in text files. Text format metadata changes should be reasonably atomic,
with a (basic) automatic recovery mechanism if the system crashes while a
change is in progress.
Add a metadata section to lvm.conf to specify multiple directories if
you want (recommended) to keep multiple copies of the metadata (eg on
different filesystems).
e.g. metadata {
dirs = ["/etc/lvm/metadata1","/usr/local/lvm/metadata2"]
}
Plenty of refinements still in the pipeline.
o Text format now has a description and time field at the top level.
o archiving and backup set the description appropriately. eg,
for an archive:
description = "Created *before* executing 'lvextend test_vg/lvol0 -l +1'."
creation_time = 1013166332
for a backup:
description = "Created *after* executing 'lvextend test_vg/lvol0 -l +1'."
creation_time = 1013166332
This is preparing the way for a simple vgcfgundo command.
slightly different from the current LVM1 method.
lvcreate --persistent y --minor 10 (to specify when created)
lvchange --persistent n (to turn off)
lvchange --persistent y --minor 11 (to change)
--persistent uses a new LV status flag stored on disk
minor number is stored on disk the same way as LVM1 does
(but major number stored is 0; any LVM1 major/minor setting gets lost)
lvchange -ay --minor 12 (to activate using minor 12, regardless of the
on-disk setting, which doesn't get changed)
--minor == -m
--persistent == -M
o updated vgcfgrestore args
o change _check_for_open_devices only to check devices present in the hash
table instead of using dev_iter which triggers a full scan even when only
displaying command line help
at the top of the file.
o Changed completion_matches -> rl_completion_matches, and added some consts.
This will probably break things on pre readline 4.2 systems.
o There is now a _default_debug, and _default_verbose level, when
using lvm interactively -vv and -dd switches just effect the current
command.
o Added a --quiet switch which sets both verbose and debug to zero.
o Introduced the LVM_SYSTEM_DIR variable.
This makes more sense because the persistent cache, and backup directories
are config specific.
eg, I use /etc/lvm for running my real LV's
but I have another directory /dev/lvm_loops that contains a config
that allows only loopback devices, I use this for testing.
o You must list long args with no short option (eg. --version) at the
front of the args.h file.
o If an argument has no short option, set the short option in args.h to '\0'
o The index into the 'the_args' var is now stored as the option value
for getopt, iff there is no short opt.
A substantial speed-up - particularly in readline mode.
If the hints turn out to be wrong, the relevant parts get thrown away.
vgscan destroys it totally. In both cases it then rebuilds itself as
required.
o Full signed arguments to lvreduce/lvextend
o Consistent lv_number/pe map use
o Populate pv->pe_allocated
o Fixes for allocation/writing of multiple LVs
