[linux-lvm] Help, lv status inactive Original and inactive Snapshot

["bowen zheng" <linuzboy gmail com>]

Everything seems to work fine. But I found this


shell> lvscan
 /dev/diskvg/lvsnapshot: read failed after 0 of 4096 at 0: Input/output error
..................
 inactive Original '/dev/diskvg/rootlv' [2.92 GB] inherit
 inactive Snapshot '/dev/diskvg/lvsnapshot' [100.00 MB] inherit
........

How can I active the rootlv and lvsnapshort. And what does the inactive mean?

When I mount the lvsnapshort, and backup it. It always shows many IO
errors (both use tar and rsync).  How do I backup the lvsnapshort.


Thanks....