Erinevus lehekülje "LIO iSCSI target" redaktsioonide vahel

Allikas: Kuutõrvaja
4. rida: 4. rida:
  
 
* http://www.youtube.com/watch?v=zSyybHxuT68 demovideo, mis LIO-t kasutades HA-iSCSI klastri kokku paneb (kasutades selleks küll spets distrot - RTS OS): RTS veebi ja Wikipedia järgi tundub, et videos nähtud lahenduses kasutati DRBD ja Pacemakerit HA tekitamiseks.
 
* http://www.youtube.com/watch?v=zSyybHxuT68 demovideo, mis LIO-t kasutades HA-iSCSI klastri kokku paneb (kasutades selleks küll spets distrot - RTS OS): RTS veebi ja Wikipedia järgi tundub, et videos nähtud lahenduses kasutati DRBD ja Pacemakerit HA tekitamiseks.
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Compared to iET, LIO is implemented as a pure kernel driver.  Operations for LIO is done via configFS special filesystem.
  
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*targetcli - provides targetcli command-line utility.  This is the standard way to manipulate LIO.
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*python-rtslib provides rtslib, a full-fledged python API library over configFS.
  
 
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*Fabric
Before LIO, the iSCSI target implementation in Ubuntu was iET.  Compared to iET, LIO is implemented as a pure kernel driver.  Operations for LIO is done via configFS special filesystem.
 
 
 
 
 
These packages are related to LIO:
 
targetcli
 
provides targetcli command-line utility.  This is the standard way to manipulate LIO.
 
python-rtslib
 
provides rtslib, a full-fledged python API library over configFS.
 
 
 
 
 
Concepts
 
In addition to the standard iSCSI concepts, you should know some LIO specific ones.
 
For the standard concepts, read RFC3720.
 
Fabric
 
 
LIO supports several other fabrics than iSCSI.
 
LIO supports several other fabrics than iSCSI.
 
Look for /var/target/fabric/ directory for available fabric specifications.
 
Look for /var/target/fabric/ directory for available fabric specifications.
Backstores
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*Backstores
 
LIO supports several storage types as backing storage for LUNs.
 
LIO supports several storage types as backing storage for LUNs.
 
Specifically, PSCSI passes SCSI commands through to a (real) SCSI device.
 
Specifically, PSCSI passes SCSI commands through to a (real) SCSI device.
 
IBLOCK emulates SCSI devices on top of block devices such as LVM logical volume.
 
IBLOCK emulates SCSI devices on top of block devices such as LVM logical volume.
  
$ sudo apt-get install --no-install-recommends targetcli python-urwid
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Paigaldamine Ubuntu/Debian keskkonnas.
$ sudo reboot
 
 
 
 
 
$ targetcli
 
Welcome to the targetcli shell:
 
 
 
Copyright (c) 2012 by RisingTide Systems LLC.
 
All rights reserved.
 
 
 
Visit us at http://www.risingtidesystems.com.
 
  
Using loopback fabric module.
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$ sudo apt-get install --no-install-recommends targetcli python-urwid
Using iscsi fabric module.
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$ sudo reboot
Using ib_srpt fabric module.
 
Using qla2xxx fabric module.
 
  
/> ls
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Kasutamine
o- / ..................................................................... [...]
 
  o- backstores .......................................................... [...]
 
  | o- fileio ............................................... [0 Storage Object]
 
  | o- iblock ............................................... [0 Storage Object]
 
  | o- pscsi ................................................ [0 Storage Object]
 
  | o- rd_dr ................................................ [0 Storage Object]
 
  | o- rd_mcp ............................................... [0 Storage Object]
 
  o- ib_srpt ........................................................ [0 Target]
 
  o- iscsi .......................................................... [0 Target]
 
  o- loopback ....................................................... [0 Target]
 
  o- qla2xxx ........................................................ [0 Target]
 
/>
 
  
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$ targetcli
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Welcome to the targetcli shell:
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/> ls
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o- / ..................................................................... [...]
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  o- backstores .......................................................... [...]
 +
  | o- fileio ............................................... [0 Storage Object]
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  | o- iblock ............................................... [0 Storage Object]
 +
  | o- pscsi ................................................ [0 Storage Object]
 +
  | o- rd_dr ................................................ [0 Storage Object]
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  | o- rd_mcp ............................................... [0 Storage Object]
 +
  o- ib_srpt ........................................................ [0 Target]
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  o- iscsi .......................................................... [0 Target]
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  o- loopback ....................................................... [0 Target]
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  o- qla2xxx ........................................................ [0 Target]
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/>
  
http://www.linux-iscsi.org/wiki/RTSadmin
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*http://www.linux-iscsi.org/wiki/RTSadmin RTSadmin manual.

Redaktsioon: 13. juuni 2012, kell 12:51

Wikipedia andmeil tundub LIO olevat upstream kernelis sees juba miskist 2010. aastast ja projekti enda lehel on väidetud, et alates 2.6.38-st on LIO Linuxi standardne iSCSI target (STGT asemel).

  • http://www.youtube.com/watch?v=zSyybHxuT68 demovideo, mis LIO-t kasutades HA-iSCSI klastri kokku paneb (kasutades selleks küll spets distrot - RTS OS): RTS veebi ja Wikipedia järgi tundub, et videos nähtud lahenduses kasutati DRBD ja Pacemakerit HA tekitamiseks.

Compared to iET, LIO is implemented as a pure kernel driver. Operations for LIO is done via configFS special filesystem.

  • targetcli - provides targetcli command-line utility. This is the standard way to manipulate LIO.
  • python-rtslib provides rtslib, a full-fledged python API library over configFS.
  • Fabric

LIO supports several other fabrics than iSCSI. Look for /var/target/fabric/ directory for available fabric specifications.

  • Backstores

LIO supports several storage types as backing storage for LUNs. Specifically, PSCSI passes SCSI commands through to a (real) SCSI device. IBLOCK emulates SCSI devices on top of block devices such as LVM logical volume.

Paigaldamine Ubuntu/Debian keskkonnas.

$ sudo apt-get install --no-install-recommends targetcli python-urwid
$ sudo reboot

Kasutamine

$ targetcli
Welcome to the targetcli shell:
/> ls
o- / ..................................................................... [...]
  o- backstores .......................................................... [...]
  | o- fileio ............................................... [0 Storage Object]
  | o- iblock ............................................... [0 Storage Object]
  | o- pscsi ................................................ [0 Storage Object]
  | o- rd_dr ................................................ [0 Storage Object]
  | o- rd_mcp ............................................... [0 Storage Object]
  o- ib_srpt ........................................................ [0 Target]
  o- iscsi .......................................................... [0 Target]
  o- loopback ....................................................... [0 Target]
  o- qla2xxx ........................................................ [0 Target]
/>