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For example, the old call and reference:
find_config_tree_str(cmd, "devices/dir", DEFAULT_DEV_DIR)
...now becomes:
find_config_tree_str(cmd, devices_dir_CFG)
So we're referring to the named configuration ID instead
of passing the configuration path and the default value
is taken from central config definition in config_settings.h
automatically.
Reorder activation code to look similar for preload tree and
activation tree.
Its also give much better suppport for device stacking,
since now we also support activation of snapshot which might
be then used for other devices.
Arghh, this was bad last-minute shortening of if() expression
in the commit 1ef9831018.
dm_tree_node_set_thin_pool_discard() must not run in the same
expression as check for non-power-2 discard, otherwise
there are 2 calls for dm_tree_node_set_thin_pool_discard
and whole setting of discards is missinterpretted.
In-relase fix it by using proper parentheses {}.
Rework thin feature detection to support runtime
section to allow to disable them selectively.
New lvm.conf option is born: global/thin_disabled_features
Configurable settings for thin pool create
if they are not specified on command line.
New supported lvm.conf options are:
allocation/thin_pool_chunk_size
allocation/thin_pool_discards
allocation/thin_pool_zero
Check if target supports discards for chunk sizes,
that are not power of 2 (just multiple of 64K),
and enable it in case it's supported by thin kernel target.
Always store discard setting in LV metadata. (Note that lvcreate_params
doesn't yet use --discard to set the initial value.)
Remove undocumented env var LVM_THIN_VERSION_MIN that has no use on a
live system.
Change verbose 'feature not found' messages to debug.
Use discard_str for string value of discard.
Add arg support for discard.
Add discard ignore, nopassdown, passdown (=default) support.
Flags could be set per pool.
lvcreate [--discard {ignore|no_passdown|passdown}] vg/thinlv
Extend lv_activate_opts with bool flag to know for which purpose
dtree is created - and add message only for activation tree
(since that's the only place that may send them).
Extend validation check for thin snapshot creation and test whether
active snapshot origin is suspended before its snapshot is created
(useful in recover scenarios) - in this case also detect, whether
transaction has been already completed and avoid such suspend check
failure in that case.
This value returns percentage of 'mapped' size compared with total LV size.
(Without passed seg pointer it return highest mapped size - but it's
not used yet.)
LVM metadata knows only of striped segments - not linear ones.
The activation code detects segments with a single stripe and switches
them to use the linear target.
If the new lvm.conf setting is set to 0 (e.g. in a test script), this
'optimisation' is turned off.
Remove DM_THIN_ERROR_DEVICE_ID from API.
Remove API warning.
Drop code that was using DM_THIN_ERROR_DEVICE_ID (already commented)
Remove debug message which slipped in through some previous commit.
Let's put the overlay device over real thin pool device.
So we can get the proper locking on cluster.
Overwise the pool LV would be activate once implicitely
and in other case explicitely, confusing locking mechanism.
This patch make the activation of pool LV independent on
activation of thin LV since they will both implicitely use
real -thin pool device.
