Bug#645052: kernel only recognizes 32G of memory
Package: linux-2.6
Version: 2.6.32-38
Severity: important
Tags: squeeze
-- Package-specific info:
** Version:
Linux version 2.6.32-5-amd64 (Debian 2.6.32-38) (ben@decadent.org.uk) (gcc version 4.3.5 (Debian 4.3.5-4) ) #1 SMP Mon Oct 3 03:59:20 UTC 2011
-- System Information:
Debian Release: 6.0.3
APT prefers proposed-updates
APT policy: (992, 'proposed-updates'), (991, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.32-5-amd64 (SMP w/4 CPU cores)
Locale: LANG=ru_RU.UTF-8, LC_CTYPE=ru_RU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
-- debconf information excluded
The config option XEN_MAX_DOMAIN_MEMORY controls how much memory a Xen instance is seeing. The default for 64bit is 32GB, which is the reason that m2.4xlarge Amazon EC2 instances only report this amount of memory.
Please set this limit to 70GB as there is a known restriction for t1.micro instances at about 80GB.
Similar bug exists and Ubuntu where it's already fixed (https://bugs.launchpad.net/ubuntu/+source/linux-ec2/+bug/667796)
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