One thing to watch out for with chyves if your virtual disk is more than 20G is the fact that it uses 512 byte blocks for the zvols it creates. I ended up using up 1.4TB only half filling up a 250G zvol. Chyves is quick and easy, but it's not exactly production ready.
-M On Thu, Nov 30, 2017 at 3:15 PM, Dustin Wenz <dustinw...@ebureau.com> wrote: > I'm using chyves on FreeBSD 11.1 RELEASE to manage a few VMs (guest OS is > also FreeBSD 11.1). Their sole purpose is to house some medium-sized Postgres > databases (100-200GB). The host system has 64GB of real memory and 112GB of > swap. I have configured each guest to only use 16GB of memory, yet while > doing my initial database imports in the VMs, bhyve will quickly grow to use > all available system memory and then be killed by the kernel: > > kernel: swap_pager: I/O error - pageout failed; blkno 1735,size 4096, > error 12 > kernel: swap_pager: I/O error - pageout failed; blkno 1610,size 4096, > error 12 > kernel: swap_pager: I/O error - pageout failed; blkno 1763,size 4096, > error 12 > kernel: pid 41123 (bhyve), uid 0, was killed: out of swap space > > The OOM condition seems related to doing moderate IO within the VM, though > nothing within the VM itself shows high memory usage. This is the chyves > config for one of them: > > bargs -A -H -P -S > bhyve_disk_type virtio-blk > bhyve_net_type virtio-net > bhyveload_flags > chyves_guest_version 0300 > cpu 4 > creation Created on Mon Oct 23 16:17:04 CDT 2017 by > chyves v0.2.0 2016/09/11 using __create() > loader bhyveload > net_ifaces tap51 > os default > ram 16G > rcboot 0 > revert_to_snapshot > revert_to_snapshot_method off > serial nmdm51 > template no > uuid 8495a130-b837-11e7-b092-0025909a8b56 > > > I've also tried using different bhyve_disk_types, with no improvement. How is > it that bhyve can use far more memory that I'm specifying? > > - .Dustin _______________________________________________ freebsd-virtualization@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-virtualization To unsubscribe, send any mail to "freebsd-virtualization-unsubscr...@freebsd.org"
