Daniel P. Berrange wrote:
On Fri, Jan 16, 2009 at 12:17:19PM -0600, Mike Christie wrote:
Hans de Goede wrote:
- No API for enumerating the LUNs in a target once you're logged in ?
open-iscsi / iscsiadm does not do this, it merely creates a virtual scsi
adapter and then the generic kernel scsi code does this (AFAIK).
I think you guys are talking about different things. open-iscsi/iscsiadm
just does the iscsi parts and so it asks the scsi layer to find and
setup/destroy luns. However, I think Daniel just wanted a way to see the
mapping of a iscsi session to its target and luns (so the session to
host/target/lun mappings see when you do iscsiadm -m session -P 3).
What we curretly do to find LUNs is
- Read all entries in /sys/class/iscsi_session/session$SID/device
until we find the one matching the targetXXXX we want
- Read all entries in /sys/class/iscsi_session/session$SID/device/$TARGET/
and if it matches pattern A.B.C.D its a LUN.
Now read /sys/bus/scsi/devices/A.B.C.D/type and see if
if this LUN corresponds to an actual device (with someo
initiators there's a LUN which doesn't have corresponding
/dev/sdXX device node)
You mean for tape devices or disks? All disks should have a /dev/sdXXX.
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