zfs/cmd/zed/zed.d
Tony Hutter 1bbd877049 Turn on/off enclosure slot fault LED even when disk isn't present
Previously when a drive faulted, the statechange-led.sh script would lookup
the drive's LED sysfs entry in /sys/block/sd*/device/enclosure_device, and
turn it on.  During testing we noticed that if you pulled out a drive, or if
the drive was so badly broken that it no longer appeared to Linux, that the
/sys/block/sd* path would be removed, and the script could not lookup the
LED entry.

To fix this, this patch looks up the disks's more persistent
"/sys/class/enclosure/X:X:X:X/Slot N" LED sysfs path at pool import.  It then
passes that path to the statechange-led script to use, rather than having the
script look it up on the fly.  This allows the script to turn on/off the slot
LEDs even when the drive is missing.

Closes #5309 
Closes #2375
2016-10-24 10:45:59 -07:00
..
README Cleanup ZEDLETs 2015-04-27 12:08:01 -07:00
all-debug.sh Cleanup ZEDLETs 2015-04-27 12:08:01 -07:00
all-syslog.sh Bring over illumos ZFS FMA logic -- phase 1 2016-09-01 11:39:45 -07:00
checksum-notify.sh Replace "email" ZEDLETs with "notify" ZEDLETs 2015-04-27 12:08:07 -07:00
checksum-spare.sh Add automatic hot spare functionality 2014-04-02 13:10:08 -07:00
data-notify.sh Combine data-notify.sh with io-notify.sh 2015-04-27 12:08:08 -07:00
generic-notify.sh Replace "email" ZEDLETs with "notify" ZEDLETs 2015-04-27 12:08:07 -07:00
io-notify.sh Combine data-notify.sh with io-notify.sh 2015-04-27 12:08:08 -07:00
io-spare.sh Add notification to io-spare.sh 2015-04-27 12:08:08 -07:00
resilver_finish-notify.sh OpenZFS 5997 - FRU field not set during pool creation and never updated 2016-08-12 13:06:48 -07:00
scrub_finish-notify.sh OpenZFS 5997 - FRU field not set during pool creation and never updated 2016-08-12 13:06:48 -07:00
statechange-led.sh Turn on/off enclosure slot fault LED even when disk isn't present 2016-10-24 10:45:59 -07:00
vdev_clear-led.sh Multipath autoreplace, control enclosure LEDs, event rate limiting 2016-10-19 12:55:59 -07:00
zed-functions.sh Rework zed_notify_email for configurable PROG/OPTS 2015-07-30 11:52:56 -07:00
zed.rc Multipath autoreplace, control enclosure LEDs, event rate limiting 2016-10-19 12:55:59 -07:00

README

Shell scripts are the recommended choice for ZEDLETs that mostly call
other utilities and do relatively little data manipulation.

Shell scripts MUST work on both bash and dash.

Shell scripts MUST run cleanly through ShellCheck:
  http://www.shellcheck.net/

General functions reside in "zed-functions.sh".  Use them where applicable.

Additional references that may be of use:

  Google Shell Style Guide
  https://google-styleguide.googlecode.com/svn/trunk/shell.xml

  Dash as /bin/sh
  https://wiki.ubuntu.com/DashAsBinSh

  Common shell script mistakes
  http://www.pixelbeat.org/programming/shell_script_mistakes.html

  Filenames and Pathnames in Shell: How to do it Correctly
  http://www.dwheeler.com/essays/filenames-in-shell.html

  Autoconf: Portable Shell Programming
  https://www.gnu.org/software/autoconf/manual/autoconf.html#Portable-Shell

Please BE CONSISTENT with the existing style, check for errors,
minimize dependencies where possible, try to be portable,
and comment anything non-obvious.  Festina lente.