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--- saisp:labs:06:contents:06 [2014/03/29 23:16]
mihai.carabas [06. Restricționarea accesului la dispozitivile logice (LUN)]
+++ saisp:labs:06:contents:06 [2014/03/30 00:26] (current)
mihai.carabas [06. LIO backstore as a physical block device]
@@ Line 1: / Line 1: @@
-==== 06. LIO backstore as a physical block device ====
+==== 06. [20p] LIO backstore as a physical block device ====
 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.
-<note warning>Implicit, clientul creat de voi va avea acces la ambele LUN-uri si vor apărea ca /dev/sdd și /dev/sd3. Voi lucrați doar pe /dev/sde.</note>
+<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>
+<code bash>
 root@storage1:~# targetcli
 /> cd backstores/iblock
@@ Line 13: / Line 13: @@
 Created iblock storage object sdb using /dev/sdb.
 /backstores/iblock> cd /iscsi/iqn.2003-01.org.linux-iscsi.storage1.x8664:sn.25e09e86bb4d/tpgt1/luns/
-/iscsi/iqn.20...4d/tpgt1/luns> create /backstores/iblock/sdb lun1
+/iscsi/iqn.20...4d/tpgt1/luns> create /backstores/iblock/sdb lun2
-Successfully created LUN 1.
+Successfully created LUN 2.
-Created mapped LUN 1 in node ACL iqn.2005-03.org.open-iscsi:fc35d7d3fc24
+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.
@@ Line 31: / Line 31: @@
 /iscsi/iqn.20...4d/tpgt1/acls> create iqn.2005-03.org.open-iscsi:8ceabce62de9
 Successfully created Node ACL for iqn.2005-03.org.open-iscsi:8ceabce62de9
+Created mapped LUN 2.
 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.
 /> saveconfig
 WARNING: Saving storage1 current configuration to disk will overwrite your boot settings.
@@ Line 40: / Line 46: @@
 root@storage3:~# iscsiadm --mode discovery --type st --portal 192.168.1.1
 .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:~# iscsiadm -m session -P 1
+root@storage3:~# dmesg |tail -10
-Target: iqn.2003-01.org.linux-iscsi.storage1.x8664:sn.25e09e86bb4d (non-flash)
+[24607.849541] scsi3 : iSCSI Initiator over TCP/IP
-        Current Portal: 192.168.1.1:3260,1
+[24608.105052] scsi 3:0:0:2: Direct-Access     LIO-ORG  IBLOCK           4.0  PQ: 0 ANSI: 5
-        Persistent Portal: 192.168.1.1:3260,1
+[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)
-                Interface:
+[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
-                Iface Name: default
+[24608.111382] sd 3:0:0:2: [sdd] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
-                Iface Transport: tcp
+[24608.120119]  sdd: unknown partition table
-                Iface Initiatorname: iqn.2005-03.org.open-iscsi:8ceabce62de9
+[24608.124463] sd 3:0:0:2: [sdd] Attached SCSI disk
-                Iface IPaddress: 192.168.1.3
+[24615.904190] nfs: server storage1 not responding, timed out
-                Iface HWaddress: <empty>
-                Iface Netdev: <empty>
-                SID: 1
-                iSCSI Connection State: LOGGED IN
-                iSCSI Session State: LOGGED_IN
-                Internal iscsid Session State: NO CHANGE
 </code>
 </solution>

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Laboratorul 6

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