| # Copyright (C) 2017 by Jonathan G. Underwood |
| # This file is part of mdraid-safe-timeouts. |
| # |
| # mdraid-safe-timeouts 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 3 of |
| # the License, or (at your option) any later version. |
| # |
| # Foobar 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 mdraid-safe-timeouts. If not, see |
| # <https://www.gnu.org/licenses/>. |
| |
| # This file causes block devices with Linux RAID (mdadm) signatures to |
| # attempt to set safe timeouts for the drives involved |
| # See udev(8) for syntax |
| |
| # Don't process any events if anaconda is running as anaconda brings up |
| # raid devices manually |
| ENV{ANACONDA}=="?*", GOTO="md_timeouts_end" |
| |
| SUBSYSTEM!="block|machinecheck", GOTO="md_timeouts_end" |
| |
| # "noiswmd" on kernel command line stops mdadm from handling |
| # "isw" (aka IMSM - Intel RAID). |
| # "nodmraid" on kernel command line stops mdadm from handling |
| # "isw" or "ddf". |
| IMPORT{cmdline}="nodmraid" |
| ENV{nodmraid}=="?*", GOTO="md_timeouts_end" |
| IMPORT{cmdline}="noiswmd" |
| ENV{noiswmd}=="?*", GOTO="md_timeouts_end" |
| |
| # Set controller timeout for parent disk of each partition if the |
| # partition is a mdraid partition of higher than raid 0, and the disk |
| # doesn't have scterc turned on (i.e. if it's disabled or the disk |
| # doesn't support it). We determine if the disk has SCTERC turned on |
| # by examining the output of smartctl and seeing if it contains the |
| # word "seconds". If the word "seconds" is found we take this to imply |
| # STCERC is turned on, and take no action. Otherwise we set the drive |
| # controller timeout to 180 seconds. It would be better to check the |
| # exit status code of smartctl rather than grepping for "seconds", but |
| # it's not clear what that will be in the three cases (supported and |
| # turned on, supported but disabled, not supported). |
| |
| ENV{DEVTYPE}!="partition", GOTO="md_timeouts_end" |
| |
| IMPORT{program}="/sbin/mdadm --examine --export $devnode" |
| |
| ACTION=="add|change", \ |
| ENV{ID_FS_TYPE}=="linux_raid_member", \ |
| ENV{MD_LEVEL}=="raid[1-9]*", \ |
| TEST=="/sys/block/$parent/device/timeout", \ |
| TEST=="/usr/sbin/smartctl", \ |
| PROGRAM!="/bin/sh -c '/usr/sbin/smartctl -l scterc /dev/$parent | grep -q seconds && exit 0 || exit 1'", \ |
| RUN+="/bin/sh -c 'echo 180 > /sys/block/$parent/device/timeout && /usr/bin/logger timeout for /dev/$parent set to 180 secs'" |
| |
| LABEL="md_timeouts_end" |