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sanboot:iscsi_create_via_linux [2009/01/18 13:28] johan added how to create arbitrary sized files |
sanboot:iscsi_create_via_linux [2009/02/25 14:10] (current) mcb30 |
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| - | ==== iSCSI Enterprise Target (IET) ==== | + | ====== Creating an iSCSI target on Linux ====== |
| - | IET (http://iscsitarget.sourceforge.net/) is a iSCSI target with good performance, easy config and small footprint. It lives completely in userland so the install and basic setup is trivial. | + | ===== Creating a disk image ===== |
| - | == Installing IET on Gentoo == | + | Create an empty file to be the disk image: |
| - | adrenaline ~ # emerge iscsitarget | + | dd if=/dev/zero of=/path/to/image/file.img bs=1M count=0 seek=8192 |
| - | == Installing IET on Ubuntu 8.10 == | + | where ///path/to/image/file.img// is the path where you want to store the disk image file, and //**8192**// is the size of the disk image that you want to create, in megabytes. |
| - | root@novBackup:~# apt-get install iscsitarget | + | ===== Creating an iSCSI target ===== |
| - | == Configuration of IET == | + | Edit the file ///etc/ietd.conf// and add: |
| - | Edit /etc/ietd.conf and add the following: | + | Target iqn.2007-08.name.dns.target.my:iscsiboot |
| + | Lun 0 Path=/path/to/image/file.img,Type=fileio | ||
| - | Target iqn.2001-04.com.example:myVolumeName | + | where ///path/to/image/file.img// is the path to your disk image file, and //name.dns.target.my// is your DNS name in reverse order. |
| - | Lun 0 Path=/dev/sdX,Type=fileio | + | |
| - | Where **Path** can be any block device (including regular block devices like hdX and sdX and virtual block devices like LVM and Software RAID devices) or regular files. If you use a regular file you need to make it as big as you want the target device to be. This will get you a 1 GB file: | + | (For completeness, you should also replace //2007-08// with the year and month in which you first obtained your DNS domain. The iSCSI naming schemes are somewhat pedantic, but it won't affect anything in practice; as long as the target name is unique then everything will work just fine.) |
| - | root@novBackup:~# dd if=/dev/zero of=/tmp/myfile bs=1024 count=1000000 | + | Restart the iSCSI target service: |
| + | |||
| + | /etc/init.d/iscsi-target restart | ||
| + | |||
| + | Make a note of the iSCSI target IQN that you chose (//iqn.2007-08.name.dns.target.my:iscsiboot// in the above example). You are now ready to: | ||
| + | |||
| + | * [[sanboot:iscsi_install|Install to the iSCSI target]] | ||
| - | Setup complete! | ||
