Skip to Main Content

Database Software

Announcement

For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle.com. Technical questions should be asked in the appropriate category. Thank you!

Oracle 12c: ASMLib vs. UDEV on RHEL7

Michael8773Oct 20 2016 — edited Oct 23 2016

Hello,

In scouring the Internet I have encounter mixed messages on this topic.  Ideally on RHEL 7 (Redhat version 7) I want to use just ASMLib rather than having to mess with udev (yuck!!!!).  Most current examples however seem to say "yes use ASMLib" but then still go on and perform udev operations!?  Some examples: 1, 2, 3

With respect to ASM\RAC\disks, udev seems to minimally require:

  • Identifying the disks (/sbin/scsi_id)
  • Getting the output for every disk (Example: /usr/lib/udev/scsi_id -g -u -d /dev/sdb1 ==> 1ATA_VBOX_HARDDISK_VBbaffce72-62c14e41).
  • Creating a custom rules file (/etc/udev/rules.d/90-ib.rules).

My questions:

  1. Is ASMLib designed such that you do not need to perform udev operations to configure disks for ASM?
  2. Is ASMLib fully supported on RHEL 7 for ASM and  RAC?

Thanks for clarifying this,

Michael

Comments
Locked Post
New comments cannot be posted to this locked post.
Post Details
Locked on Nov 20 2016
Added on Oct 20 2016
9 comments
6,176 views