I would say, its not the RAW disks permission which is changing, rather it is the ownership permission changing on the RAW disks. On Wed, Jul 30, 2008 at 1:15 PM, LS Cheng <exriscer@xxxxxxxxx> wrote: > Hi > > In Linux you either put chmod and chown in rc.local to set raw devices > permissions or use udev. > > In HP-UX I have not seen this issue, the permissions are persistent even > after reboot for Raw Devices. > > In HP-UX 11.31 this can happen if the devices are created with mksf instead > of mknod, whenever you add new devices with insf -e this will reset > permissions > > > Thanks > > -- > LSC > > > > > On Wed, Jul 30, 2008 at 10:43 AM, Syed Jaffar Hussain < > sjaffarhussain@xxxxxxxxx> wrote: > >> Hi list, >> >> >> We currently have a 4 node Oracle RAC on HP UX Superdom Itanimum II with >> EMC SAN (Symatrix DMX4) storage. Since few days, we are facing an abnormal >> situation where the RAW disks permissions (includes OCR, Voting and ASM >> disks) are getting changed dynamically and sometime during the node reboot >> too, which cause Cluster hung situation. Our current workaround is to reset >> the permissions to RAW disks. >> >> If I am not wrong, this sort of problem exists on Linux reboot and to >> prevent this, we need to set a parameter which keeps the existing parameter >> alive. I am not sure this is the same case on HP. Does anyone out there has >> faced similar kind of issue? or it is very abnormal situation? >> >> We did open a call with HP support and they said, basically, OS doesn't >> have any control on the RAW devices and definately it won't change the >> permission either dynamically or during the reboot time and they suspect >> Oracle might be doing something to change the permission. >> >> I have opened a TAR with Oracle too and waiting for the reply. Appreciate >> if someone can put some limelight on this issue. >> >> -- >> Best Regards, >> >> Syed Jaffar Hussain >> Oracle ACE >> 8i,9i & 10g OCP DBA >> RAC Certified Expert >> >> Official Oracle RAC SIG Representative for Saudi Arabian region ( >> http://www.oracleracsig.org/) >> http://jaffardba.blogspot.com/ >> >> http://apex.oracle.com/pls/otn/f?p=19297:4:1579866181463918::NO:4:P4_ID:126 >> >> ---------------------------------------------------------------------------------- >> "Winners don't do different things. They do things differently." >> >> >> >> -- >> Best Regards, >> >> Syed Jaffar Hussain >> Oracle ACE >> 8i,9i & 10g OCP DBA >> RAC Certified Expert >> >> Official Oracle RAC SIG Representative for Saudi Arabian region ( >> http://www.oracleracsig.org/) >> http://jaffardba.blogspot.com/ >> >> http://apex.oracle.com/pls/otn/f?p=19297:4:1579866181463918::NO:4:P4_ID:126 >> >> ---------------------------------------------------------------------------------- >> "Winners don't do different things. They do things differently." >> > > -- Best Regards, Syed Jaffar Hussain Oracle ACE 8i,9i & 10g OCP DBA RAC Certified Expert Official Oracle RAC SIG Representative for Saudi Arabian region ( http://www.oracleracsig.org/) http://jaffardba.blogspot.com/ http://apex.oracle.com/pls/otn/f?p=19297:4:1579866181463918::NO:4:P4_ID:126 ---------------------------------------------------------------------------------- "Winners don't do different things. They do things differently."