projects / projects / geninitrd.git / blame
| Commit | Line | Data |
|---|---|---|
| 2d769917 ER |
1 | #!/bin/sh |
| 2 | # geninitrd mod: bcache | |
| 3 | # requires 3.10 kernel | |
| 4 | # http://bcache.evilpiepirate.org/ | |
| 5 | USE_BCACHE=${USE_BCACHE:-yes} | |
| 6 | ||
| 7 | # setup geninitrd module | |
| 8 | # @access public | |
| 9 | setup_mod_bcache() { | |
| 10 | if [ ! -d /sys/fs/bcache ]; then | |
| 11 | USE_BCACHE=no | |
| 12 | fi | |
| 13 | ||
| 14 | if [ ! -x /lib/udev/bcache-register ]; then | |
| 15 | USE_BCACHE=no | |
| 16 | fi | |
| 17 | } | |
| 18 | ||
| 0bdde1a1 ER |
19 | # find modules for $devpath |
| 20 | # @param $devpath device to be examined | |
| 2d769917 ER |
21 | # @access public |
| 22 | find_modules_bcache() { | |
| 23 | if ! is_yes "$USE_BCACHE"; then | |
| 24 | return | |
| 25 | fi | |
| 26 | ||
| 0bdde1a1 ER |
27 | local devpath="$1" |
| 28 | local dev=${devpath#/dev/} | |
| 29 | local slavedir=/sys/block/$dev/slaves | |
| 30 | ||
| 31 | if [ ! -d $slavedir ]; then | |
| 32 | die "Cannot inspect $slavedir for $devpath" | |
| 33 | fi | |
| 2d769917 | 34 | |
| 0bdde1a1 ER |
35 | for dev in $slavedir/*; do |
| 36 | dev=${dev#$slavedir/} | |
| 37 | find_modules_for_devpath /dev/$dev | |
| 38 | done | |
| 39 | ||
| 40 | find_module "bcache" | |
| 41 | } | |
| 2d769917 ER |
42 | |
| 43 | # generate initrd fragment | |
| 44 | # @access public | |
| 45 | initrd_gen_bcache() { | |
| 46 | if ! is_yes "$USE_BCACHE"; then | |
| 47 | return | |
| 48 | fi | |
| 49 | ||
| 50 | verbose "Adding bcache support to initrd" | |
| 51 | ||
| 52 | inst_rules 69-bcache.rules | |
| 53 | inst_exec /lib/udev/bcache-register /lib/udev | |
| 54 | } |