diff options
Diffstat (limited to 'Documentation/aoe')
| -rw-r--r-- | Documentation/aoe/aoe.txt | 91 | ||||
| -rw-r--r-- | Documentation/aoe/autoload.sh | 17 | ||||
| -rw-r--r-- | Documentation/aoe/mkdevs.sh | 36 | ||||
| -rw-r--r-- | Documentation/aoe/mkshelf.sh | 25 | ||||
| -rw-r--r-- | Documentation/aoe/status.sh | 31 | ||||
| -rw-r--r-- | Documentation/aoe/udev-install.sh | 26 | ||||
| -rw-r--r-- | Documentation/aoe/udev.txt | 23 |
7 files changed, 249 insertions, 0 deletions
diff --git a/Documentation/aoe/aoe.txt b/Documentation/aoe/aoe.txt new file mode 100644 index 00000000000..43e50108d0e --- /dev/null +++ b/Documentation/aoe/aoe.txt @@ -0,0 +1,91 @@ +The EtherDrive (R) HOWTO for users of 2.6 kernels is found at ... + + http://www.coraid.com/support/linux/EtherDrive-2.6-HOWTO.html + + It has many tips and hints! + +CREATING DEVICE NODES + + Users of udev should find the block device nodes created + automatically, but to create all the necessary device nodes, use the + udev configuration rules provided in udev.txt (in this directory). + + There is a udev-install.sh script that shows how to install these + rules on your system. + + If you are not using udev, two scripts are provided in + Documentation/aoe as examples of static device node creation for + using the aoe driver. + + rm -rf /dev/etherd + sh Documentation/aoe/mkdevs.sh /dev/etherd + + ... or to make just one shelf's worth of block device nodes ... + + sh Documentation/aoe/mkshelf.sh /dev/etherd 0 + + There is also an autoload script that shows how to edit + /etc/modprobe.conf to ensure that the aoe module is loaded when + necessary. + +USING DEVICE NODES + + "cat /dev/etherd/err" blocks, waiting for error diagnostic output, + like any retransmitted packets. + + "echo eth2 eth4 > /dev/etherd/interfaces" tells the aoe driver to + limit ATA over Ethernet traffic to eth2 and eth4. AoE traffic from + untrusted networks should be ignored as a matter of security. + + "echo > /dev/etherd/discover" tells the driver to find out what AoE + devices are available. + + These character devices may disappear and be replaced by sysfs + counterparts, so distribution maintainers are encouraged to create + scripts that use these devices. + + The block devices are named like this: + + e{shelf}.{slot} + e{shelf}.{slot}p{part} + + ... so that "e0.2" is the third blade from the left (slot 2) in the + first shelf (shelf address zero). That's the whole disk. The first + partition on that disk would be "e0.2p1". + +USING SYSFS + + Each aoe block device in /sys/block has the extra attributes of + state, mac, and netif. The state attribute is "up" when the device + is ready for I/O and "down" if detected but unusable. The + "down,closewait" state shows that the device is still open and + cannot come up again until it has been closed. + + The mac attribute is the ethernet address of the remote AoE device. + The netif attribute is the network interface on the localhost + through which we are communicating with the remote AoE device. + + There is a script in this directory that formats this information + in a convenient way. + + root@makki root# sh Documentation/aoe/status.sh + e10.0 eth3 up + e10.1 eth3 up + e10.2 eth3 up + e10.3 eth3 up + e10.4 eth3 up + e10.5 eth3 up + e10.6 eth3 up + e10.7 eth3 up + e10.8 eth3 up + e10.9 eth3 up + e4.0 eth1 up + e4.1 eth1 up + e4.2 eth1 up + e4.3 eth1 up + e4.4 eth1 up + e4.5 eth1 up + e4.6 eth1 up + e4.7 eth1 up + e4.8 eth1 up + e4.9 eth1 up diff --git a/Documentation/aoe/autoload.sh b/Documentation/aoe/autoload.sh new file mode 100644 index 00000000000..78dad1334c6 --- /dev/null +++ b/Documentation/aoe/autoload.sh @@ -0,0 +1,17 @@ +#!/bin/sh +# set aoe to autoload by installing the +# aliases in /etc/modprobe.conf + +f=/etc/modprobe.conf + +if test ! -r $f || test ! -w $f; then + echo "cannot configure $f for module autoloading" 1>&2 + exit 1 +fi + +grep major-152 $f >/dev/null +if [ $? = 1 ]; then + echo alias block-major-152 aoe >> $f + echo alias char-major-152 aoe >> $f +fi + diff --git a/Documentation/aoe/mkdevs.sh b/Documentation/aoe/mkdevs.sh new file mode 100644 index 00000000000..6ce70703eb4 --- /dev/null +++ b/Documentation/aoe/mkdevs.sh @@ -0,0 +1,36 @@ +#!/bin/sh + +n_shelves=${n_shelves:-10} +n_partitions=${n_partitions:-16} + +if test "$#" != "1"; then + echo "Usage: sh `basename $0` {dir}" 1>&2 + exit 1 +fi +dir=$1 + +MAJOR=152 + +echo "Creating AoE devnode files in $dir ..." + +set -e + +mkdir -p $dir + +# (Status info is in sysfs. See status.sh.) +# rm -f $dir/stat +# mknod -m 0400 $dir/stat c $MAJOR 1 +rm -f $dir/err +mknod -m 0400 $dir/err c $MAJOR 2 +rm -f $dir/discover +mknod -m 0200 $dir/discover c $MAJOR 3 +rm -f $dir/interfaces +mknod -m 0200 $dir/interfaces c $MAJOR 4 + +export n_partitions +mkshelf=`echo $0 | sed 's!mkdevs!mkshelf!'` +i=0 +while test $i -lt $n_shelves; do + sh -xc "sh $mkshelf $dir $i" + i=`expr $i + 1` +done diff --git a/Documentation/aoe/mkshelf.sh b/Documentation/aoe/mkshelf.sh new file mode 100644 index 00000000000..40932836bb8 --- /dev/null +++ b/Documentation/aoe/mkshelf.sh @@ -0,0 +1,25 @@ +#! /bin/sh + +if test "$#" != "2"; then + echo "Usage: sh `basename $0` {dir} {shelfaddress}" 1>&2 + exit 1 +fi +n_partitions=${n_partitions:-16} +dir=$1 +shelf=$2 +MAJOR=152 + +set -e + +minor=`echo 10 \* $shelf \* $n_partitions | bc` +endp=`echo $n_partitions - 1 | bc` +for slot in `seq 0 9`; do + for part in `seq 0 $endp`; do + name=e$shelf.$slot + test "$part" != "0" && name=${name}p$part + rm -f $dir/$name + mknod -m 0660 $dir/$name b $MAJOR $minor + + minor=`expr $minor + 1` + done +done diff --git a/Documentation/aoe/status.sh b/Documentation/aoe/status.sh new file mode 100644 index 00000000000..6628116d4a9 --- /dev/null +++ b/Documentation/aoe/status.sh @@ -0,0 +1,31 @@ +#! /bin/sh +# collate and present sysfs information about AoE storage + +set -e +format="%8s\t%8s\t%8s\n" +me=`basename $0` +sysd=${sysfs_dir:-/sys} + +# printf "$format" device mac netif state + +# Suse 9.1 Pro doesn't put /sys in /etc/mtab +#test -z "`mount | grep sysfs`" && { +test ! -d "$sysd/block" && { + echo "$me Error: sysfs is not mounted" 1>&2 + exit 1 +} +test -z "`lsmod | grep '^aoe'`" && { + echo "$me Error: aoe module is not loaded" 1>&2 + exit 1 +} + +for d in `ls -d $sysd/block/etherd* 2>/dev/null | grep -v p` end; do + # maybe ls comes up empty, so we use "end" + test $d = end && continue + + dev=`echo "$d" | sed 's/.*!//'` + printf "$format" \ + "$dev" \ + "`cat \"$d/netif\"`" \ + "`cat \"$d/state\"`" +done | sort diff --git a/Documentation/aoe/udev-install.sh b/Documentation/aoe/udev-install.sh new file mode 100644 index 00000000000..861a27f9877 --- /dev/null +++ b/Documentation/aoe/udev-install.sh @@ -0,0 +1,26 @@ +# install the aoe-specific udev rules from udev.txt into +# the system's udev configuration +# + +me="`basename $0`" + +# find udev.conf, often /etc/udev/udev.conf +# (or environment can specify where to find udev.conf) +# +if test -z "$conf"; then + if test -r /etc/udev/udev.conf; then + conf=/etc/udev/udev.conf + else + conf="`find /etc -type f -name udev.conf 2> /dev/null`" + if test -z "$conf" || test ! -r "$conf"; then + echo "$me Error: no udev.conf found" 1>&2 + exit 1 + fi + fi +fi + +# find the directory where udev rules are stored, often +# /etc/udev/rules.d +# +rules_d="`sed -n '/^udev_rules=/{ s!udev_rules=!!; s!\"!!g; p; }' $conf`" +test "$rules_d" && sh -xc "cp `dirname $0`/udev.txt $rules_d/60-aoe.rules" diff --git a/Documentation/aoe/udev.txt b/Documentation/aoe/udev.txt new file mode 100644 index 00000000000..ab39d8bb634 --- /dev/null +++ b/Documentation/aoe/udev.txt @@ -0,0 +1,23 @@ +# These rules tell udev what device nodes to create for aoe support. +# They may be installed along the following lines (adjusted to what +# you see on your system). +# +# ecashin@makki ~$ su +# Password: +# bash# find /etc -type f -name udev.conf +# /etc/udev/udev.conf +# bash# grep udev_rules= /etc/udev/udev.conf +# udev_rules="/etc/udev/rules.d/" +# bash# ls /etc/udev/rules.d/ +# 10-wacom.rules 50-udev.rules +# bash# cp /path/to/linux-2.6.xx/Documentation/aoe/udev.txt \ +# /etc/udev/rules.d/60-aoe.rules +# + +# aoe char devices +SUBSYSTEM="aoe", KERNEL="discover", NAME="etherd/%k", GROUP="disk", MODE="0220" +SUBSYSTEM="aoe", KERNEL="err", NAME="etherd/%k", GROUP="disk", MODE="0440" +SUBSYSTEM="aoe", KERNEL="interfaces", NAME="etherd/%k", GROUP="disk", MODE="0220" + +# aoe block devices +KERNEL="etherd*", NAME="%k", GROUP="disk" |