AoE practice
时间：2009-03-27 来源：s_x_g
1. What is AoE
AoE, acronym of "ATA over Ethernet", is a storage area network (SAN) protocol which allows AoE initiators to use storage devices on the (remote) AoE target using normal ethernet cabling. AoE is another technology of sharing storage at disk-level, just like iSCSI technology, only it can not play across subnets. To the AoE initiator, the remote storage looks like a normal, locally-attached hard drive.
2. AoE Practice
2.1 environment
I use two CentOS servers within one subnet, both with aoe module built.
server 1: initiator, with vblade-19.tgz installed, /aoe directory to mount remote disk
server 2: target, with aoetools-30.tar.gz installed, an image file to serve as a disk
(NOTICE: both vblade and coetools are from http://aoetools.sourceforge.net)
2.2 steps
(1) load aoe.ko module on both servers
# modprebe aoe
(2) server 2: export the disk
# dd if=/dev/zero of=/storage1.img bs=1024k count=20
# vbladed 0 1 eth0 /storage1.img
(3) server 1: check available storage devices, and mount them
# aoe-discover
# aoe-stat
e0.1 0.020GB eth1 up
# ls /dev/etherd/
e0.1
# fdisk -l
Disk /dev/sda: 81.9 GB, 81964302336 bytes
255 heads, 63 sectors/track, 9964 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 1 8918 71633803+ 5 Extended
/dev/sda2 * 8919 9963 8393962+ c W95 FAT32 (LBA)
/dev/sda5 1 1460 11727387 83 Linux
/dev/sda6 1461 2920 11727418+ 83 Linux
/dev/sda7 2921 8918 48178903+ 7 HPFS/NTFS
Disk /dev/etherd/e0.1: 20 MB, 20971520 bytes
255 heads, 63 sectors/track, 2 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/etherd/e0.1 doesn't contain a valid partition table
# fdisk /dev/etherd/e0.1
# ls /dev/etherd/
e0.1 e0.1p1
# mkfs.ext3 /dev/etherd/e0.1p1
# mount /dev/etherd/e0.1p1 /aoe
# mount
/dev/sda5 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
tmpfs on /dev/shm type tmpfs (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
/dev/etherd/e0.1p1 on /aoe type ext3 (rw)
[from http://blog.chinaunix.net/u/8754/showart_1882133.html]
AoE, acronym of "ATA over Ethernet", is a storage area network (SAN) protocol which allows AoE initiators to use storage devices on the (remote) AoE target using normal ethernet cabling. AoE is another technology of sharing storage at disk-level, just like iSCSI technology, only it can not play across subnets. To the AoE initiator, the remote storage looks like a normal, locally-attached hard drive.
2. AoE Practice
2.1 environment
I use two CentOS servers within one subnet, both with aoe module built.
server 1: initiator, with vblade-19.tgz installed, /aoe directory to mount remote disk
server 2: target, with aoetools-30.tar.gz installed, an image file to serve as a disk
(NOTICE: both vblade and coetools are from http://aoetools.sourceforge.net)
2.2 steps
(1) load aoe.ko module on both servers
# modprebe aoe
(2) server 2: export the disk
# dd if=/dev/zero of=/storage1.img bs=1024k count=20
# vbladed 0 1 eth0 /storage1.img
(3) server 1: check available storage devices, and mount them
# aoe-discover
# aoe-stat
e0.1 0.020GB eth1 up
# ls /dev/etherd/
e0.1
# fdisk -l
Disk /dev/sda: 81.9 GB, 81964302336 bytes
255 heads, 63 sectors/track, 9964 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 1 8918 71633803+ 5 Extended
/dev/sda2 * 8919 9963 8393962+ c W95 FAT32 (LBA)
/dev/sda5 1 1460 11727387 83 Linux
/dev/sda6 1461 2920 11727418+ 83 Linux
/dev/sda7 2921 8918 48178903+ 7 HPFS/NTFS
Disk /dev/etherd/e0.1: 20 MB, 20971520 bytes
255 heads, 63 sectors/track, 2 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/etherd/e0.1 doesn't contain a valid partition table
# fdisk /dev/etherd/e0.1
# ls /dev/etherd/
e0.1 e0.1p1
# mkfs.ext3 /dev/etherd/e0.1p1
# mount /dev/etherd/e0.1p1 /aoe
# mount
/dev/sda5 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
tmpfs on /dev/shm type tmpfs (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
/dev/etherd/e0.1p1 on /aoe type ext3 (rw)
[from http://blog.chinaunix.net/u/8754/showart_1882133.html]
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