On Mon, Dec 02, 2002 at 02:32:23PM -0800, jheiss-linuxlvm@ofb.net wrote: > I have a volume group that is 1.4 TB, with a volume that is 400 GB. > I currently have three 50 GB snapshots of that volume. When I try > to create a fourth, I get the following error: > > bash-2.05a# lvcreate -L 50G -s -n snap_home1_20021202 /dev/home/home1 > lvcreate -- WARNING: the snapshot will be automatically disabled once it > gets full > lvcreate -- INFO: using default snapshot chunk size of 64 KB for > "/dev/home/snap_home1_20021202" > lvcreate -- ERROR "Cannot allocate memory" creating VGDA for > "/dev/home/snap_home1_20021202" in kernel You don't have enough kernel virtual memory to hold the snapshot exception table in core :( Install more RAM. We have planned to reduce the amount of RAM needed to hold such tables in LVM2/device-mapper next year. > > After some experimenting, I found that I could create a snapshot that > is 36 GB or smaller, but anything larger than 36 GB fails with the above > error. The volume group has 386 GB free. > > Any thoughts? I looked through the changelog and mailing list archives > and couldn't find anything similar. > > Other possibly useful bits of info: > > OS: Red Hat 7.3 > kernel: 2.4.18-18.7.xsmp > LVM: 1.0.3-4 (Red Hat RPM) > > Jason > > > _______________________________________________ > 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/ -- Regards, Heinz -- The LVM Guy -- *** Software bugs are stupid. Nevertheless it needs not so stupid people to solve them *** =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Heinz Mauelshagen Sistina Software Inc. Senior Consultant/Developer Am Sonnenhang 11 56242 Marienrachdorf Germany Mauelshagen@Sistina.com +49 2626 141200 FAX 924446 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- _______________________________________________ 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/
