On 01/07/2012 08:08 PM, Ray Van Dolson wrote: > I believe this is normal behavior for LVM. LVM has to build an overlay > layer from all of the blocks contained in the snapshot so they are > available via access to the "parent" LV at any time. > > The larger the snapshot, the longer it takes to read in all of the > blocks and build the overlay layer. does that imply that the overlay / COW bitmap is in-memory only? I don't get that fully, because without persistent information, it couldn't be reconstructed on reboot. So, the real problem is the absense of lazy initialization of the overlay layer
Also, even if this was by design, in my mind it wouldbe broken by design. Read the issue, you'll notice that this will prohibit use of LVM2 snapshots on many systems. Just my $0.02 Seth -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/360237 Title: cannot boot root on lvm2 with (largish) snapshot To manage notifications about this bug go to: https://bugs.launchpad.net/lvm2/+bug/360237/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
