Re: iSCSI to a Ceph node with 2 network adapters - how to ?

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On Fri, Jun 15, 2018 at 6:19 AM, Wladimir Mutel <mwg@xxxxxxxxx> wrote:
> Jason Dillaman wrote:
>
>>> чер 13 08:38:14 p10s tcmu-runner[54121]: 2018-06-13 08:38:14.726 54121
>>> [DEBUG] dbus_name_acquired:461: name org.kernel.TCMUService1 acquired
>>> чер 13 08:38:30 p10s tcmu-runner[54121]: 2018-06-13 08:38:30.521 54121
>>> [DEBUG_SCSI_CMD] tcmu_print_cdb_info:1205 rbd/libvirt.tower-prime-e-3tb: 1a
>>> 0 3f 0 c0 0
>>> чер 13 08:38:30 p10s tcmu-runner[54121]: 2018-06-13 08:38:30.523 54121
>>> [DEBUG_SCSI_CMD] tcmu_print_cdb_info:1205 rbd/libvirt.tower-prime-e-3tb: 1a
>>> 0 3f 0 c0 0
>>> чер 13 08:38:30 p10s tcmu-runner[54121]: 2018-06-13 08:38:30.543 54121
>>> [DEBUG_SCSI_CMD] tcmu_print_cdb_info:1205 rbd/libvirt.tower-prime-e-3tb: 9e
>>> 10 0 0 0 0 0 0 0 0 0 0 0 c 0 0
>>> чер 13 08:38:30 p10s tcmu-runner[54121]: 2018-06-13 08:38:30.550 54121
>>> [DEBUG_SCSI_CMD] tcmu_print_cdb_info:1205 rbd/libvirt.tower-prime-e-3tb: 9e
>>> 10 0 0 0 0 0 0 0 0 0 0 0 c 0 0
>>> чер 13 08:38:47 p10s tcmu-runner[54121]: 2018-06-13 08:38:47.944 54121
>>> [DEBUG_SCSI_CMD] tcmu_print_cdb_info:1205 rbd/libvirt.tower-prime-e-3tb: 9e
>>> 10 0 0 0 0 0 0 0 0 0 0 0 c 0 0
>
>
>>>          Wikipedia says that 1A is 'mode sense' and 9e is 'service action
>>> in'.
>>>          These records are logged when I try to put the disk online or
>>> initialize it with GPT/MBR partition table in Windows Disk Management (and
>>> Windows report errors after that)
>>>          What to check next ? Any importance of missing 'SSD' device
>>> class ?
>
>
>> Did you configure MPIO within Windows [1]? Any errors recorded in the
>> Windows Event Viewer?
>
>
>> The "SSD" device class isn't important -- it's just a way to describe
>> the LUN as being backed by non-rotational media (e.g. VMware will show
>> a different icon).
>
>
>> [1] http://docs.ceph.com/docs/master/rbd/iscsi-initiator-win/
>
>
>         I don't use either MPIO or MCS on Windows 2008 R2 or Windows 10
> initiator (not Win2016 but hope there is no much difference). I try to make
> it work with a single session first. Also, right now I only have a single
> iSCSI gateway/portal (single host, single IP, single port).
> Or is MPIO mandatory to use with Ceph target ?

It's mandatory even if you only have a single path since MPIO is
responsible for activating the paths.

>
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-- 
Jason
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