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man: lvmraid(7) clarifications

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Heinz Mauelshagen 2017-03-16 23:10:57 +01:00
parent 4a3e30d102
commit ad4158bac7
1 changed files with 7 additions and 7 deletions
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14
man/lvmraid.7_main
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@ -273,16 +273,16 @@ written.
The RAID implementation keeps track of which parts of a RAID LV are
synchronized. This uses a bitmap saved in the RAID metadata. The bitmap
can exclude large parts of the LV from synchronization to reduce the
amount of work. Without this, the entire LV would need to be synchronized
every time it was activated. When a RAID LV is first created and
activated the first synchronization is called initialization.
amount of work after a crash. Without this, the entire LV would need
to be synchronized every time it was activated. When a RAID LV is
first created and activated the first synchronization is called initialization.
Automatic synchronization happens when a RAID LV is activated, but it is
usually partial because the bitmaps reduce the areas that are checked.
A full sync may become necessary when devices in the RAID LV are changed.
A full sync becomes necessary when devices in the RAID LV are replaced.
The synchronization status of a RAID LV is reported by the
following command, where "image synced" means sync is complete:
following command, where "Cpy%Sync" = "100%" means sync is complete:
.B lvs -a -o name,sync_percent
@ -824,8 +824,8 @@ synchronous.
RAID takeover is converting a RAID LV from one RAID level to another, e.g.
raid5 to raid6. Changing the RAID level is usually done to increase or
decrease resilience to device failures. This is done using lvconvert and
specifying the new RAID level as the LV type:
decrease resilience to device failures or to restripe LVs. This is done
using lvconvert and specifying the new RAID level as the LV type:
.B lvconvert --type
.I RaidLevel