RE: Live Upgrade for Linux

Octavio / Super wrote:

> Regarding disk images, what about the data that is in the RAM that

No. The read operations will read from the not-yet-sync'd memory copy, so you still get the same result.

However, copying a "live" filesystem (one which is currently mounted read/write) is unsafe however you do it, whether by tar, cp, dd or whatever. If you wish to duplicate a filesystem, you first have to unmount it or mount it read-only (obviously, an unmounted filesystem can't be duplicated by tar or cp).

-- 
Glynn Clements