Flashcache Upstart script

cache.start

#!/bin/sh

# $2 is the /dev/mapper/IDENTIFIER
# $3 is the name of the cache, as specified by Flashcache

# Tune parameters
sysctl -w "dev.flashcache.$3.fallow_delay=3600"
sysctl -w "dev.flashcache.$3.dirty_thresh_pct=80"

# Verify disk structure
/sbin/fsck -y -f "/dev/mapper/$2"

# Mount it
/bin/mount -t ext4 -o rw,nodiratime,noatime,acl "/dev/mapper/$2" "/mnt/cache"

# Done
exit 0

caches

/dev/mapper/Ubuntu-cache--ssd   cache   Ubuntu-cache--ssd+cache-hdd

flashcache.conf

# flashcache - load flashcache devices and configure them
#
# This helper scans the drives and starts the scripts on /etc/flashcache. The
# name of the files are <cachedev>.start and <cachedev>.stop, and require the
# files to be executable.

description "load flashcache device"

start on started udev

kill timeout 60
task

script
    # Make sure the kernel module is loaded
    /sbin/modprobe flashcache || exit 1

    # Load each flashcache defined
    cat /etc/flashcache/caches | while read P N S
    do
        if /sbin/flashcache_load "$P"; then
            exec /etc/flashcache/$N.start "$P" "$N" "$S" || true
            echo "Loaded flashcache device from $P"
        fi
    done

    # Add little sleep for caches to come up
    sleep 1
end script