Package: cryptsetup
Version: 2:1.3.0-3
Severity: normal
It seems as if arch-specific crypto modules (for example - aesni-intel) are
loaded _after_ the root and swap devices are luksOpen'd (other devices are
open'd later in boot, late enough that the forced modprobe (I have aesni-intel
in /etc/modules) has occurred.
Unfortunately it appears that this results in these devices using SW-based
crypto (it's reasonably obvious on this system which is which; aesni-intel
can move 481Mbyte/s vs the SSD's native 542Mbyte/s vs SW-based crypto
topping out at ~141Mbyte/s; as if that wasn't enough - temperatore rises
sharply in the SW-based case).
It wasn't apparent how to configure things differently to work around this
(obviously this is VERY early init stuff) although I can see that moving
from modular to static aesni-intel might be one way to go.
Thoughts?
-- Package-specific info:
-- /proc/cmdline
BOOT_IMAGE=/vmlinuz-3.0.3 root=/dev/mapper/root ro root=LABEL=root
acpi_osi=Linux video=vesafb:off libata.noacpi=1 quiet
-- /etc/crypttab
# <target name> <source device> <key file> <options>
swap /dev/sdb5 none luks
root /dev/sdb6 none luks
scratch /dev/sdb10 none luks
-- /etc/fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
LABEL=root / ext4
noatime,nodiratime,barrier=1,commit=600,discard,errors=remount-ro 0 1
LABEL=boot /boot ext2 noatime,nodiratime,errors=remount-ro 0
1
LABEL=scratch /scratch ext4
noatime,nodiratime,barrier=1,commit=600,discard,nodev,nosuid,noexec 0 2
LABEL=swap none swap sw 0 0
-- System Information:
Debian Release: wheezy/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 3.0.3 (SMP w/8 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages cryptsetup depends on:
ii debconf [debconf-2.0] 1.5.41 Debian configuration management sy
ii dmsetup 2:1.02.63-3.1 The Linux Kernel Device Mapper use
ii libc6 2.13-16 Embedded GNU C Library: Shared lib
ii libcryptsetup1 2:1.3.0-3 libcryptsetup shared library
ii libpopt0 1.16-1 lib for parsing cmdline parameters
cryptsetup recommends no packages.
Versions of packages cryptsetup suggests:
ii busybox 1:1.18.5-1 Tiny utilities for small and embed
ii dosfstools 3.0.9-1 utilities for making and checking
ii initramfs-tools [linux-initra 0.99 tools for generating an initramfs
ii liblocale-gettext-perl 1.05-7 module using libc functions for in
ii udev 172-1 /dev/ and hotplug management daemo
-- debconf information:
cryptsetup/prerm_active_mappings: true
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