On 10/26/2009 04:27 PM, Tomasz Chmielewski wrote:
Looking at it using wireshark I can see that the Login Command is
generated every 17-18 seconds,
even after the mtx command had failed.
So there seems to be something weirdly configured this way, compared
to the "manually" created
device with a script.
Did you compare the tgtadm commands generated with your config, and
the ones you used before?
One thing I noticed, is that the changer is defined before the (in my
case) three tape drives.
One of the configuration options for the changer is a reference to the
tape drives using the lun number:
tgtadm --lld iscsi --op update --mode logicalunit --tid 1 --lun=4
--params "element_type=4,address=500,tid=1,lun=1"
tgtadm --lld iscsi --op update --mode logicalunit --tid 1 --lun=4
--params "element_type=4,address=500,tid=1,lun=2"
tgtadm --lld iscsi --op update --mode logicalunit --tid 1 --lun=4
--params "element_type=4,address=500,tid=1,lun=3"
Only later on, the luns are defined:
tgtadm --lld iscsi --op new --mode logicalunit --tid 1 --lun 1 -b
/root/tapes/notape1 --device-type tape
tgtadm --lld iscsi --op update --mode logicalunit --tid 1 --lun=1
--params scsi_sn="HUM1A00001"
tgtadm --lld iscsi --op update --mode logicalunit --tid 1 --lun=1
--params scsi_id="HP LTO3 ULTRIUM"
tgtadm --lld iscsi --op update --mode logicalunit --tid 1 --lun=1
--params product_id="LTO3 ULTRIUM"
tgtadm --lld iscsi --op update --mode logicalunit --tid 1 --lun=1
--params removable="1"
tgtadm --lld iscsi --op update --mode logicalunit --tid 1 --lun=1
--params vendor_id="HP"
tgtadm --lld iscsi --op update --mode logicalunit --tid 1 --lun=1
--params product_rev="0001"
# Write cache is enabled (default) for lun 1.
This maybe a reason for the problems?
Albert
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