Bump minimum default RAM for Ironic nodes to 1GB
Set the default RAM for Ironic BM VMs to 1GB to ensure DIB produced deployment
ramdisks function correctly across older and newer kernels, regardless of
rootfstype.
Change-Id: Ifc15a4430aa63c3599e7fd76f5116dc7b728ead0
Closes-bug: #1311987
diff --git a/lib/ironic b/lib/ironic
index 757b83e..d0a9c23 100644
--- a/lib/ironic
+++ b/lib/ironic
@@ -53,11 +53,12 @@
IRONIC_VM_SSH_ADDRESS=${IRONIC_VM_SSH_ADDRESS:-$HOST_IP}
IRONIC_VM_COUNT=${IRONIC_VM_COUNT:-1}
IRONIC_VM_SPECS_CPU=${IRONIC_VM_SPECS_CPU:-1}
-# NOTE(agordeev): both ubuntu and fedora deploy images won't work with 256MB of RAM.
-# System halts and throws kernel panic during initramfs unpacking.
-# Ubuntu needs at least 384MB, but fedora requires 448.
-# So placing 512 here to satisfy both.
-IRONIC_VM_SPECS_RAM=${IRONIC_VM_SPECS_RAM:-512}
+# NOTE(adam_g): Kernels 3.12 and newer user tmpfs by default for initramfs.
+# DIB produced ramdisks tend to be ~250MB but tmpfs will only allow
+# use of 50% of available memory before ENOSPC. Set minimum 1GB
+# for nodes to avoid (LP: #1311987) and ensure consistency across
+# older and newer kernels.
+IRONIC_VM_SPECS_RAM=${IRONIC_VM_SPECS_RAM:-1024}
IRONIC_VM_SPECS_DISK=${IRONIC_VM_SPECS_DISK:-10}
IRONIC_VM_EMULATOR=${IRONIC_VM_EMULATOR:-/usr/bin/qemu-system-x86_64}
IRONIC_VM_NETWORK_BRIDGE=${IRONIC_VM_NETWORK_BRIDGE:-brbm}