On 07/16/2012 05:32 PM, ronnie sahlberg wrote:
Can you verify that the tgtd target is running properly ?
Just try to start it manually as root as :
killall -9 tgtd
tgtd
and verify it is running by netstat -tapn | grep 3260
Thanks, that worked.
I'm currently running into an issue where I try to configure
in over 256 virtual tapes via iscsi and on the initiator I see:
st 14:0:0:255: Attached scsi tape st254
st 14:0:0:255: st254: try direct i/o: yes (alignment 1 B)
st 14:0:0:255: Attached scsi generic sg256 type 1
scsi: host 14 channel 0 id 0 lun16640 has a LUN larger than allowed by
the host adapter
scsi: host 14 channel 0 id 0 lun16641 has a LUN larger than allowed by
the host adapter
Any idea why I would be seeing this?
The first 256 (0-255) tape devices look like they are configured
into the initiator correctly, and repeating this with the target
having 256 tapes appears to work.
Looks like is due to the report_luns command not returning
the correct data from what I can tell on the host in
scsi_report_lun_scan:
result = scsi_execute_req(sdev, scsi_cmd, DMA_FROM_DEVICE,
lun_data, length, &sshdr,
SCSI_TIMEOUT + 4 * HZ, 3, NULL);
.
.
.
/*
* Scan the luns in lun_data. The entry at offset 0 is really
* the header, so start at 1 and go up to and including num_luns.
*/
for (lunp = &lun_data[1]; lunp <= &lun_data[num_luns]; lunp++) {
lun = scsilun_to_int(lunp);
.
.
.
} else if (lun > sdev->host->max_lun) {
printk(KERN_WARNING "scsi: %s lun%d has a LUN
larger"
" than allowed by the host adapter\n",
devname, lun);
I poked around a bit and found a fairly stale report of an identical
problem:
http://old.nabble.com/-PATCH--Allow-more-than-255-LUNs-to-be-reported.-td19448136.html
On Tue, Jul 17, 2012 at 5:25 AM, Rob Evers<revers@xxxxxxxxxx> wrote:
On 07/13/2012 07:08 PM, ronnie sahlberg wrote:
Hi,
If you just want to create a tape drive with a tape loaded, these
commands should work :
# create a blank tape
tgtimg --op new --device-type tape --barcode 12345 --size 100 --type
data --file /data/tape001.img
# create a target
tgtadm --lld iscsi --op new --mode target --tid 1 -T iqn.ronnie.test
# create a SSC LUN for with the blank tape above loaded into the device
tgtadm --lld iscsi --mode logicalunit --op new --tid 1 --lun 1 -b
/data/tape001.img --device-type=tape
I get 'tgtadm: invalid request when trying to create the LU
# tgtimg --op new --device-type tape --barcode 12345 --size 100 --type data
--file /data/tape001.img
blk_sz: 100, next 1152, 1152
Sizeof(mam): 1104, sizeof(h): 48
# tgtadm --lld iscsi --op new --mode target --tid 1 -T iqn.ronnie.test
tgtadm: can't send the request to the tgt daemon, Transport endpoint is not
connected
At this, I did 'service tgtd restart'
# tgtadm --lld iscsi --op new --mode target --tid 1 -T iqn.ronnie.test
# tgtadm --lld iscsi --mode logicalunit --op new --tid 1 --lun 1 -b
/data/tape001.img --device-type=tape
tgtadm: invalid request
#
# tgtimg --help
Usage: tgtimg [OPTION]
Linux SCSI Target Framework Image File Utility, version 1.0.24
[root@rhel-storage-03 ~]# tgtadm --help
Usage: tgtadm [OPTION]
Linux SCSI Target Framework Administration Utility, version 1.0.24
This is all after a fresh reboot.
Am I still missing something?
Rob
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