On Thu, 2020-11-05 at 10:47 -0800, Samuel Sieb wrote: > On 11/5/20 9:02 AM, Patrick O'Callaghan wrote: > > The swapon(8) man page says: > > > > The swap file implementation in the kernel expects to be able to > > write > > to the file directly, without the assistance of the filesystem. This > > is a > > problem on files with holes or on copy-on-write files on filesystems > > like Btrfs. > > > > > > As I'm getting OOM errors when I try to run a VM, it looks like I need > > a swap file or partition. I'd prefer to use part of my (large) SSD for > > this, but currently it's entirely formatted as BTRFS. Do I need to > > resize the BTRFS partition rather than using a swap file? > > Yes. But have you enabled zram yet for swap?
This is a clean install, so it's enabled by default and has reserved 4GB. I think that's what's actually causing the OOMs. I have 16GB of RAM. On F32 I could run an 8GB VM with hugepages, i.e. dedicated memory, plus normal stuff including multiple browser tabs etc. and never had a problem. Now as soon as I try to start the VM it gets OOM errors, and multiple Firefox tabs are failing and have to be restarted. poc _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org
