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Commit Graph

17 Commits

Author SHA1 Message Date
Zdenek Kabelac
187cc8d344 lvcreate: change error message
Provide more useful error message.
2020-09-15 22:52:25 +02:00
Zdenek Kabelac
d02d7bc560 vdo: fix slab size bits calculation
When formating VDO volume, the calculated amound of bits
for 'vdoformat --slab-bits' parameter was shifted by 2 bits
(calculated size was making 2MiB vdo_slab_size_mb value appear like if
user would be specifying only 512KiB)

Fixed by properly converting internal size_mb value to KiB.
2020-02-25 17:43:16 +01:00
Zdenek Kabelac
3716aa848e vdo: fix vdoformat when -V is specified
The previous patch improved read of pipe when lvm2 was looking
for default logical size, but we clearly must read pipe also
for -V case, when the logical size is already defined.
2020-02-10 15:41:30 +01:00
Zdenek Kabelac
cf844941d4 vdo: adapt for multi line vdo_format output
Do not close pipeline after 1st. line parsed from vdo_format.
Also reprint the output for a user so new messages from vdo_format
can be seen by users.
2020-01-23 10:32:15 +01:00
Zdenek Kabelac
cf8aee096f vdo: introduce get_vdo_write_policy_name 2019-10-04 17:31:55 +02:00
Zdenek Kabelac
c756f76802 vdo: correct internal API for set_vdo_write_policy
This is 'setting' function.
2019-10-04 17:31:55 +02:00
Zdenek Kabelac
9d8a028e8c vdo: keep minimum_io_size in sectors 2019-10-04 17:31:55 +02:00
Zdenek Kabelac
6612d8dd5e vdo: enhance activation with layer -vpool
Enhance 'activation' experience for VDO pool to more closely match
what happens for thin-pools where we do use a 'fake' LV to keep pool
running even when no thinLVs are active. This gives user a choice
whether he want to keep thin-pool running (wihout possibly lenghty
activation/deactivation process)

As we do plan to support multple VDO LVs to be mapped into a single VDO,
we want to give user same experience and 'use-patter' as with thin-pools.

This patch gives option to activate VDO pool only without activating
VDO LV.

Also due to 'fake' layering LV we can protect usage of VDO pool from
command like 'mkfs' which do require exlusive access to the volume,
which is no longer possible.

Note: VDO pool contains 1024 initial sectors as 'empty' header - such
header is also exposed in layered LV (as read-only LV).
For blkid we are indentified as LV with UUID suffix - thus private DM
device of lvm2 - so we do not need to store any extra info in this
header space (aka zero is good enough).
2019-09-17 13:17:19 +02:00
Zdenek Kabelac
ab031d673d vdo: introduce function for estimation of virtual size 2019-01-21 12:53:16 +01:00
Zdenek Kabelac
3320ab8334 lib: move towards v2 version of VDO format
Drop very old original format of VDO target and focus on V2 version.
So some variables were renamed or replaced.
There is no compatibility preserved (with assumption so far this is
experimental feature and there is no real user).

Note - version currently VDO calls this version 6.2.
2018-12-20 13:26:55 +01:00
Zdenek Kabelac
fdd76da33d cov: drop uneeded header files 2018-10-15 17:49:44 +02:00
Zdenek Kabelac
253989ecd9 cov: fix error path
Avoid calling 'bad:' section since we have not set 'fd' yet
and instead directly return failing 0 value.
2018-10-15 17:49:44 +02:00
Zdenek Kabelac
c58733ca15 lvcreate: vdo support
Supports basic:  'lvcreate --vdo -LXXXG -VYYYG vg/vdoname -n lvname'
Allows to create basic VDO pool volume and virtual VDO volume.
2018-07-09 15:29:12 +02:00
Zdenek Kabelac
44c99a8822 vdo: data percentage
Display percentage of used virtual size of vdo-pool volume.
2018-07-09 15:28:35 +02:00
Zdenek Kabelac
0dafd159a8 vdo_manip: parsing status of VDO device 2018-07-09 15:28:35 +02:00
Zdenek Kabelac
aa63dfbe39 vdo: support functions to map enums to string names
Translate VDO enums to printable strings.
2018-07-09 15:28:35 +02:00
Zdenek Kabelac
a8f84f7801 vdo: introduce segment types and manip functions
Core functionality introducing lvm VDO support.
2018-07-09 15:28:35 +02:00