[dm-devel] Priozier for remote port on fibre channel devices
Hannes Reinecke
hare at suse.de
Fri Jan 11 08:06:55 UTC 2013
On 01/11/2013 08:47 AM,
Andreas.Bleischwitz at continental-corporation.com wrote:
> Hello Hannes,
>
> sorry for top-posting, but crappy Notes is not really a good client
> for mailing-list - at least I don't know how to avoid such mess.
>
> The output is
>
> [root at fru3710e ~]# sg_inq /dev/sdc
> standard INQUIRY:
> PQual=0 Device_type=0 RMB=0 version=0x04 [SPC-2]
> [AERC=0] [TrmTsk=0] NormACA=1 HiSUP=1 Resp_data_format=2
> SCCS=0 ACC=0 TPGS=0 3PC=0 Protect=0 BQue=0
> EncServ=0 MultiP=1 (VS=1) [MChngr=0] [ACKREQQ=0] Addr16=0
> [RelAdr=0] WBus16=0 Sync=0 Linked=0 [TranDis=0] CmdQue=1
> [SPI: Clocking=0x0 QAS=0 IUS=0]
> length=193 (0xc1) Peripheral device type: disk
> Vendor identification: EMC
> Product identification: Invista
> Product revision level: 5100
> Unit serial number: CKM00xxxxxxxxx
>
Hehe. No alua for you (TPGS=0).
But that's EMC for you; probably you should count yourself lucky
that it's not claiming compability to SCSI-2 ...
> and well, 'weightedpath' is also available in RHEL, but only queries
> for the device name and the SCSI-address. I wanted to query the
> remote-port of the storage-device - which is the frontend wwn of the
> storage device.
>
Why don't you use the 'by-path' symlinks for the device name in
weightedpath?
They'll include the target port WWN, so should give you what you want.
Cheers,
Hannes
--
Dr. Hannes Reinecke zSeries & Storage
hare at suse.de +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)
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