Hi

> A snapshot of a database that's suffering from caching by the operating

system or disk controller will not be consistent either.

Usually right, but LVM snapshots are software-based snapshots and will
therefore not suffer from disk controller caching.
Just make sure, forces writes are ON and WORKING.

Even OS-caches should - from my POV - also not be a problem IF you take the
LVM snapshots inside the OS that is caching - the OS should be knowing what
it is doing.

If you have virtualization and caches inside the guest and do LVM snapshots
in the host, there is a good chance of problems, if forced writes are not
working, which is much more problematic in virtualized environments.

- LVM snapshots on linux are basically the same as volume shadow copies on
Windows... Both should work.

Regards,
Steffen



[Non-text portions of this message have been removed]