> > I did more testing, and it appears that snapshots in LVM will not work > > with either 4GB or or 64GB support enabled in the kernel under 2.4.20. > > This includes both LVM 1.0.7 or the latest LVM2. > > > > That's a known issue. You are faced with a VM flaw. > > I presume that it's not LVM snapshots only bacause HIGHMEM is > basically broken. Can you give more specifics/examples/web links/etc? Does this mean I should avoid LVM completely with HIGHMEM? What if any other problems should I expect with LVM (and/or other software)? > > Is there anyone using LVM snapshots with 64GB RAM support (or even 4GB > > RAM support, as snapshots would be good for at least our medium size > > servers if not our large ones)? Is so, let me know the kernel version > > and LVM version you are using so that I can try it. > > Probably not, because the system lifelocks on bounce buffers (which is > the sympton of the principle HIGHMEM bug). > Obviously not a lot of HIGHMEM users out there raising priorities to fix > this. Is this easy to reproduce? If so, how? Sounds like I am either a lucky early adopter of a >4GB Libux system, and/or the problem is rare even on HIGHMEM systems? Thanks. _______________________________________________ linux-lvm mailing list linux-lvm@sistina.com http://lists.sistina.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
