General VM requirements for builder VMs
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- 2xvCPU
- 16GB RAM
- 16G for built results
- 4G for root partition
- SWAP+RAM
- 32GB for /var/lib/mock tmpfs
- 140GB tmpfs for mock root(s)
AMD hypervisors
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vmhost-x86-copr0[1-4].rdu-cc.fedoraproject.org
- 256G RAM
- 64 threads (2x16 cores)
- 2.6T+ storage
- 300 G SWAP
This brings us 32+ (few devel) overcommitted builders on each builder:
- 32*16G = up to 512 GRAM (256 RAM + 300 G SWAP)
- 4G+16G = 20G*32 = up to 640G for root+results
- 172G*32 = up to 5.5T SWAP for tmpfs (huge overcommit, though only limitted
amount of build tasks require that much tmpfs)
Manually created swap:
1. lvcreate -L 300G vg_guests -n swap
2. mkswap -L swap /dev/mapper/vg_guests-swap
Note that this requires changing /etc/fstab, and then /etc/sysconfig/grub - and
regenerating the /boot grub config.
Manually created space for volumes/images:
1. lvcreate -n images -l 100%FREE vg_guests
2. mkfs.ext4 /dev/mapper/vg_guests-images -L vmvolumes
Manually created br0 interface.
Not done by me, TODO: add steps.
