Hi! I'm no specialist on the SCSI protocol, but I always thought LUNs are restricted to 0-7 (maybe 0-15). On larger storage systems I've seen "big" LUN numbers are mapped to varying targets. On HP-UX they use a pattern like
(LUN / 128), (LUN/8), LUN for "port", "bus" and "target", so this is an example: disk 45 0/7/1/0.99.16.19.0.10.1 sdisk CLAIMED DEVICE HP HSV200 Adapter 0/7/1/0, Domain 99, Area 16, Port 19, Bus 0, Target 10, LUN 1 (LUN 81) So "bus 0, target 10, lun 1" actually refers to "lun 81". I don't know how Linux works there. Regards, Ulrich >>> ??????? ????????<[email protected]> schrieb am 02.02.2012 um 10:53 in Nachricht <4de2e2fe-a256-4c0c-b9a5-ee129718d...@a15g2000yqf.googlegroups.com>: > Hello, > > Ive spent many time to find and answer, and did not have a luck. > > I have scst target with configuration: > scstadmin --list_group > > Driver: iscsi > Target: iqn.2011-09.dev.st1.acc > > Group: iqn.2012-01-10.ru.host1:openiscsi > > Assigned LUNs: > > LUN Device > ----------- > 100 vdisk1 > > > Assigned Initiators: > > Initiator > ----------------------------------------------------------- > iqn.2012-01-10.ru.host1:openiscsi > > So, my LUN have a number 100. > > Initiator discover/login to target seccesfully and creates specific > host in /sys/class/scsi_host > I can also send a manual scan like echo "- - 100" to /sys/class/ > scsi_host/hostN/scan and my device now is persist in system. > > As far as i know, scst supports up to 16383 lun number. > > And if i add some another large lun number, it does not takes > automatically (REPORT_LUNS_DATA_CHANGED works, but initiator not see > large numbers). > > Q: Is the way to do automatically scaning in open-iscsi initiator for > seeing all custom luns (not only 0-7)? I`m undestand, what it not good > idea to scan all luns of range 0-16383 at start point, but i think it > is may be possible to do this thru report luns, such as can do sg_luns > -s2 /dev/sd*. -- You received this message because you are subscribed to the Google Groups "open-iscsi" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/open-iscsi?hl=en.
