LV & VG syncronisation

[John Jayaseelan]

Hi,

LVM mirroring is configured for all the Logical volumes in a VG.

Is the sunchronisation between main & mirror copy will happen automatically or a manual process is required to make sure LV & VG mirror copies are in sync.

Thanks

[Mark Grant · Accepted solution]

They will always be in sync unless you break the mirror or it breaks itself. If they do get out of sync if, perhaps, you lose a disk, then you would run "vgsync"

Actually, mirrors are synchronized when the volume group is activated.

[Pete Randall]

John,

I have nothing more to add other than: it's automatic!


Pete

[KapilRaj]

Are you in doubt .. you can do lvdisplay -v lvol?? and look for PE-->LE mapping all the PE's state should be CURRENT and not STALE

Kaps

[Jean-Louis Phelix]

Hi

On normal work you don't have to care, but after a problem you have to be careful to the vg activation options. -s gives you an immediate access to the volume, which is somtimes required, but *disables* the automatic resync.

Regards.

[John Jayaseelan]

Thanks to all four your reply.