fiskn

fiskn / osd_to_diskid.sh

Created August 22, 2016 13:19

Lists osd to disk serial numbers, useful for finding failed disks in 12x3.5" in 1U servers

	#!/bin/bash

	DISKS=`ceph-disk list \| grep "ceph data"`
	old_IFS=$IFS
	IFS=$'\n'
	#echo $DISKS
	for DISK in $DISKS; do
	DEV=`awk '{print $1}' <<< $DISK`
	OSD=`awk '{print $7}' <<< $DISK`
	DEV=`echo $DEV \| sed -e 's/\/dev\///g'`

fiskn / 50-rbd-ra.rules

Created August 22, 2016 13:16

udev rule to set readahead on Ceph RBD's

KERNEL=="rbd[0-9]*", ENV{DEVTYPE}=="disk", ACTION=="add|change", ATTR{bdi/read_ahead_kb}="16384"