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Extend root device hints for different types of WWN

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This patch is extending the root device hints to also look at
ID_WWN_WITH_EXTENSION and ID_WWN_VENDOR_EXTENSION from udev.

Prior to this patch the bash ramdisk only cared about ID_WWN but in some
systems in some platforms with a RAID controller, this ID can be same
even if they are different disks (see bug 1516641).

Related-Bug: #1516641
Change-Id: I45b3910d03d164d880b32169b91e94e88812e183
This commit is contained in:
Lucas Alvares Gomes 2015-11-16 15:42:42 +00:00
parent 2ff566b80a
commit ff988ac45c
1 changed files with 23 additions and 0 deletions
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23
elements/deploy-ironic/init.d/70-ironic-root-device
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@ -25,6 +25,11 @@ function _exec_lsblk() {
}
function _exec_scsi_id() {
/lib/udev/scsi_id --whitelisted --export -d $1 | grep $2 | cut -d "=" -f 2
}
# Get the block device size in GiB
function get_size() {
echo $(( (512 * $(cat /sys/block/$1/size) ) / 2**30))
@ -54,6 +59,16 @@ function get_wwn() {
}
function get_wwn_with_extension() {
normalize "$(_exec_scsi_id "$1" ID_WWN_WITH_EXTENSION)"
}
function get_wwn_vendor_extension() {
normalize "$(_exec_scsi_id "$1" ID_WWN_VENDOR_EXTENSION)"
}
function get_serial() {
normalize "$(_exec_lsblk "$1" SERIAL)"
}
@ -77,6 +92,12 @@ function parse_hints() {
wwn=*)
CHECK_WWN=`normalize "${i#wwn=}"`
;;
wwn_with_extension=*)
CHECK_WWN_WITH_EXT=`normalize "${i#wwn_with_extension=}"`
;;
wwn_vendor_extension=*)
CHECK_WWN_VENDOR_EXT=`normalize "${i#wwn_vendor_extension=}"`
;;
serial=*)
CHECK_SERIAL=`normalize "${i#serial=}"`
;;
@ -107,6 +128,8 @@ function get_root_device() {
[[ $CHECK_VENDOR != false && $(get_vendor "$DEV_NAME") != $CHECK_VENDOR ]] && continue || :
[[ $CHECK_SERIAL != false && $(get_serial "$DEV_NAME") != $CHECK_SERIAL ]] && continue || :
[[ $CHECK_WWN != false && $(get_wwn "$DEV_NAME") != $CHECK_WWN ]] && continue || :
[[ $CHECK_WWN_WITH_EXT!= false && $(get_wwn_with_extension "$DEV_NAME") != $CHECK_WWN_WITH_EXT ]] && continue || :
[[ $CHECK_WWN_VENDOR_EXT != false && $(get_wwn_vendor_extension "$DEV_NAME") != $CHECK_WWN_VENDOR_EXT ]] && continue || :
# A device that matches all hints was found
echo "$DEV_PATH"