>From my experience using a Dell md3460 with zfs (not gpfs). I've not tried it >with gpfs but it looks very simular to our IBM dcs3700 we run gpfs on.
To get multipath to work correctly, we had to install the storage manager software from the cd that can be downloaded from Dells website, which made a few modifications to multipath.conf<http://multipath.conf>. Broadly speaking the blacklist comments others have made are correct. You also need to enable and start multipathd (chkconfig multipathd on) Peter Childs ITS Research and Teaching Support Queen Mary, University of London ---- Matt Weil wrote ---- enable mpathconf --enable --with_multipathd y show config multipathd show config On 4/25/16 3:27 PM, Jan Finnerman Load wrote: Hi, I realize this might not be strictly GPFS related but I’m getting a little desperate here… I’m doing an implementation of GPFS/Spectrum Scale 4.2 at a customer and struggle on a question of disk multipathing for the intended NSD disks with their direct attached SAS disk systems. If I do a multipath –ll, after a few seconds I just get the prompt back. I expected to see the usual big amount of path info, but nothing there. If I do a multipathd –k and then a show config, I see all the Dell disk luns with reasonably right parameters. I can see them as /dev/sdf, /dev/sdg, etc. devices. I can also add them in PowerKVM:s Kimchi web interface and even deploy a GPFS installation on it. The big question is, though, how do I get multipathing to work ? Do I need any special driver or setting in the multipath.conf file ? I found some of that but more generic e.g. for RedHat 6, but now we are in PowerKVM country. The platform consists of: 4x IBM S812L servers SAS controller PowerKVM 3.1 Red Hat 7.1 2x Dell MD3460 SAS disk systems No switches Jan ///Jan [cid:[email protected]] Jan Finnerman Senior Technical consultant [CertTiv_sm] [cid:[email protected]] Kista Science Tower 164 51 Kista Mobil: +46 (0)70 631 66 26 Kontor: +46 (0)8 633 66 00/26 <mailto:[email protected]>[email protected]<mailto:[email protected]> _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss ____ This email message is a private communication. The information transmitted, including attachments, is intended only for the person or entity to which it is addressed and may contain confidential, privileged, and/or proprietary material. Any review, duplication, retransmission, distribution, or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is unauthorized by the sender and is prohibited. If you have received this message in error, please contact the sender immediately by return email and delete the original message from all computer systems. Thank you.
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