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- #!/bin/sh
- #
- # dmraid-activate: Script to reformat the output of dmraid to be useful with
- # udev.
- #
- # (c) 2008 Canonical Ltd.
- #
- # This program is free software; you can redistribute it and/or modify
- # it under the terms of the GNU General Public License as published by
- # the Free Software Foundation; either version 2 of the License, or
- # (at your option) any later version.
- #
- # This program is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
- #
- # You should have received a copy of the GNU General Public License along
- # with this program; if not, write to the Free Software Foundation, Inc.,
- # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
- # Arguments: $1 = Name of array you want activated.
- activate_array ()
- {
- Raid_Setinfo=$(dmraid -i -si "$1")
- if [ -z "$Raid_Setinfo" ]; then
- log_error "Cannot retrieve RAID set information for $1"
- return 1
- fi
-
- Raid_Type=$(dmraid -i -si -ct "$1")
- Raid_Nodevs=$(dmraid -i -si -cd "$1")
-
- case "$Raid_Type" in
- stripe)
- if [ "$Raid_Nodevs" -lt 2 ]; then
- if [ -n "$Degraded" ]; then
- log_error "Cannot bring up a RAID0 array in degraded mode, not all devices present."
- fi
- return 2
- fi
- ;;
- mirror)
- if [ "$Raid_Nodevs" -lt 2 ]; then
- if [ -z "$Degraded" ]; then
- log_error "Raid set $Raid_Name is degraded. Not activating"
- return 2
- else
- log_warning "Activating $Raid_Name in degraded mode"
- Return_Val=3
- fi
- fi
- ;;
- raid5_*)
- modprobe -q dm_raid45
- if [ "$Raid_Nodevs" -lt 3 ]; then
- if [ -z "$Degraded" ]; then
- log_error "Raid set $Raid_Name is degraded. Not activating"
- return 2
- else
- log_warning "Activating $Raid_Name in degraded mode"
- Return_Val=3
- fi
- fi
- ;;
- esac
-
- # At this point we have the required number of devs, or the user wants the
- # array brought up in degraded mode, except in the case of striped arrays.
- dmraid -i -ay -Z "$1"
- return $Return_Val
- }
-
- log_warning()
- {
- if type logger > /dev/null ; then
- logger -t dmraid-activate "WARNING: $1"
- else
- echo "dmraid-activate: WARNING: $1"
- fi
- }
-
- log_error()
- {
- if type logger > /dev/null ; then
- logger -t dmraid-activate "ERROR: $1"
- else
- echo "dmraid-activate: ERROR: $1"
- fi
- }
-
- if grep -qs "\<nodmraid\>" /proc/cmdline; then
- log_warning "dmraid disabled by boot option"
- exit 0
- fi
-
- modprobe -q dm_mod
-
- if [ -z "$1" ] || [ "$1" = "--degraded" ] && [ "$#" -lt 2 ]; then
- echo "Node name not specified." >&2
- exit 1
- fi
-
- if [ "$1" = "--degraded" ]; then
- Degraded=1
- Node_Name=$2
- else
- Node_Name=$1
- fi
-
- Raid_Name=$(dmraid -i -r -cr /dev/$Node_Name | grep -vi "No RAID disks" | grep -vi "formats discovered")
-
- if [ -z "$Raid_Name" ]; then
- exit 0
- fi
-
- # We need a special case for isw arrays, since it is possible to have several
- # subsets of a RAID group, of varying RAID types.
- case "$Raid_Name" in
- isw_*)
- Isw_Group_Name=$Raid_Name
- Isw_Subsets=$(dmraid -i -n "/dev/$Node_Name" | grep volume | sed 's/.*volume: " *\(.*\)"$/\1/')
-
- for isw_subset in $Isw_Subsets
- do
- activate_array "${Isw_Group_Name}_${isw_subset}"
- done
- break
- ;;
- *)
- activate_array "$Raid_Name"
- break
- ;;
- esac
-
- exit $Return_Val
-