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saisp:labs:06:contents:06 [2014/03/29 23:15] mihai.carabas [06. Lorem ipsum] |
saisp:labs:06:contents:06 [2014/03/30 00:26] (current) mihai.carabas [06. LIO backstore as a physical block device] |
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| - | ==== 06. Restricționarea accesului la dispozitivile logice (LUN) ==== | + | ==== 06. [20p] LIO backstore as a physical block device ==== |
| - | Vom mai crea un nou ''LUN'' ce are ca ''backstore'' tot un fișier:<code> | + | Creați un ''backstore'' de tip physical device (Hint: ''iblock'') folosind discul ''/dev/sdb'' de pe stația ''storage1''. Asociați ''backstore''-ul creat cu un LUN și montați-l pe stația ''storage3''. Nu uitați să mapați IQN-ul stației ''storage3'' la noul LUN. |
| - | /backstores/fileio> create disk2 /disk2.img 100M | + | |
| + | <note warning>Implicit, clientul creat de voi va avea acces la toate LUN-urile. Permiteți accesul doar pentru ''LUN 2''. Eliminați de asemenea ''LUN 2'' de la IQN-ul stației ''storage2''.</note> | ||
| + | |||
| + | <solution -hidden> | ||
| + | <code bash> | ||
| + | root@storage1:~# targetcli | ||
| + | /> cd backstores/iblock | ||
| + | /backstores/iblock> create sdb /dev/sdb | ||
| Generating a wwn serial. | Generating a wwn serial. | ||
| - | Not using buffered mode. | + | Created iblock storage object sdb using /dev/sdb. |
| - | Created fileio disk2. | + | /backstores/iblock> cd /iscsi/iqn.2003-01.org.linux-iscsi.storage1.x8664:sn.25e09e86bb4d/tpgt1/luns/ |
| - | /backstores/fileio> cd /iscsi/iqn.2003-01.org.linux-iscsi.storage1.x8664:sn.25e09e86bb4d/tpgt1/luns/ | + | /iscsi/iqn.20...4d/tpgt1/luns> create /backstores/iblock/sdb lun2 |
| - | /iscsi/iqn.20...4d/tpgt1/luns> | + | Successfully created LUN 2. |
| - | </code> | + | Created mapped LUN 2 in node ACL iqn.2005-03.org.open-iscsi:fc35d7d3fc24 |
| + | /> saveconfig | ||
| + | WARNING: Saving storage1 current configuration to disk will overwrite your boot settings. | ||
| + | The current target configuration will become the default boot config. | ||
| + | Are you sure? Type 'yes': yes | ||
| - | Vom mai crea încă un ''LUN'' asociat backstore-ului ''disk2.img'':<code> | + | |
| - | /iscsi/iqn.20...4d/tpgt1/luns> create /backstores/fileio/disk2 lun1 | + | root@storage3:~# apt-get install open-iscsi |
| - | Successfully created LUN 1. | + | root@storage3:~# iscsi-iname |
| - | Created mapped LUN 1 in node ACL iqn.2005-03.org.open-iscsi:fc35d7d3fc24 | + | iqn.2005-03.org.open-iscsi:8ceabce62de9 |
| - | </code> | + | root@storage3:~# cat /etc/iscsi/initiatorname.iscsi |
| - | Observați că în mod implicit acesta s-a adăugat automat pentru clientul ''storage2'' (la IQN-ul acestuia). Dorim să scoatem această mapare:<code> | + | InitiatorName=iqn.2005-03.org.open-iscsi:8ceabce62de9 |
| - | /iscsi/iqn.20...4d/tpgt1/luns> cd ../acls/iqn.2005-03.org.open-iscsi:fc35d7d3fc24 | + | |
| - | /iscsi/iqn.20...:fc35d7d3fc24> ls | + | /> cd /iscsi/iqn.2003-01.org.linux-iscsi.storage1.x8664:sn.25e09e86bb4d/tpgt1/acls/ |
| - | o- iqn.2005-03.org.open-iscsi:fc35d7d3fc24 ........................................... [2 Mapped LUNs] | + | /iscsi/iqn.20...4d/tpgt1/acls> create iqn.2005-03.org.open-iscsi:8ceabce62de9 |
| - | o- mapped_lun0 ......................................................................... [lun0 (rw)] | + | Successfully created Node ACL for iqn.2005-03.org.open-iscsi:8ceabce62de9 |
| - | o- mapped_lun1 ......................................................................... [lun1 (rw)] | + | Created mapped LUN 2. |
| - | /iscsi/iqn.20...:fc35d7d3fc24> delete 1 | + | Created mapped LUN 1. |
| + | Created mapped LUN 0. | ||
| + | /iscsi/iqn.20...4d/tpgt1/acls> cd iqn.2005-03.org.open-iscsi:8ceabce62de9 | ||
| + | /iscsi/iqn.20...:8ceabce62de9> delete 0 | ||
| + | Deleted Mapped LUN 0. | ||
| + | /iscsi/iqn.20...:8ceabce62de9> delete 1 | ||
| Deleted Mapped LUN 1. | Deleted Mapped LUN 1. | ||
| + | /> saveconfig | ||
| + | WARNING: Saving storage1 current configuration to disk will overwrite your boot settings. | ||
| + | The current target configuration will become the default boot config. | ||
| + | Are you sure? Type 'yes': yes | ||
| + | |||
| + | root@storage3:~# iscsiadm --mode discovery --type st --portal 192.168.1.1 | ||
| + | 192.168.1.1:3260,1 iqn.2003-01.org.linux-iscsi.storage1.x8664:sn.25e09e86bb4d | ||
| + | root@storage3:~# iscsiadm -m node -L all | ||
| + | Logging in to [iface: default, target: iqn.2003-01.org.linux-iscsi.storage1.x8664:sn.25e09e86bb4d, portal: 192.168.1.1,3260] (multiple) | ||
| + | Login to [iface: default, target: iqn.2003-01.org.linux-iscsi.storage1.x8664:sn.25e09e86bb4d, portal: 192.168.1.1,3260] successful. | ||
| + | root | ||
| + | root@storage3:~# iscsiadm -m session | ||
| + | tcp: [1] 192.168.1.1:3260,1 iqn.2003-01.org.linux-iscsi.storage1.x8664:sn.25e09e86bb4d (non-flash) | ||
| + | |||
| + | root@storage3:~# dmesg |tail -10 | ||
| + | [24607.849541] scsi3 : iSCSI Initiator over TCP/IP | ||
| + | [24608.105052] scsi 3:0:0:2: Direct-Access LIO-ORG IBLOCK 4.0 PQ: 0 ANSI: 5 | ||
| + | [24608.105819] sd 3:0:0:2: Attached scsi generic sg3 type 0 | ||
| + | [24608.107245] sd 3:0:0:2: [sdd] 204800 512-byte logical blocks: (104 MB/100 MiB) | ||
| + | [24608.110439] sd 3:0:0:2: [sdd] Write Protect is off | ||
| + | [24608.110442] sd 3:0:0:2: [sdd] Mode Sense: 43 00 00 08 | ||
| + | [24608.111382] sd 3:0:0:2: [sdd] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA | ||
| + | [24608.120119] sdd: unknown partition table | ||
| + | [24608.124463] sd 3:0:0:2: [sdd] Attached SCSI disk | ||
| + | [24615.904190] nfs: server storage1 not responding, timed out | ||
| </code> | </code> | ||
| + | </solution> | ||
| + | |||
