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  • 15. Re: OVM 3.2.1 doesn't discover local disk
    user12273962 Pro
    Currently Being Moderated
    What budachst said....

    service multpathd start

    or

    service multpathd status

    to make the service start automatically do a

    chkconfig multipathd on

    Also, do a cat or more on

    /etc/blacklisted.wwids

    This should show the wwids that are blacklisted.

    Edited by: user12273962 on Feb 15, 2013 1:13 PM
  • 16. Re: OVM 3.2.1 doesn't discover local disk
    960874 Newbie
    Currently Being Moderated
    There seems to be much confusion about which HDD's are which and how they're to be used so let's clarify:
    * /dev/sda is used for the Oracle VM Server installation:
    # blkid
    /dev/sda1: LABEL="/boot" UUID="89bbdaaa-1177-4ec7-8c99-8b698c068f8f" TYPE="ext3"
    /dev/sda2: LABEL="/" UUID="7ff3ecea-0b01-4986-a914-9f0741023e82" TYPE="ext3"
    /dev/sda3: LABEL="SWAP-sda31" UUID="18d8494e-ce62-4b60-88b1-ea8bc3616bd9" TYPE="swap"
    * /dev/sdb is empty and should be made available to Oracle VM Manager as a local repository
    * /dev/sdc is used for something else:
    /dev/sdc1: LABEL="ORACLE_SSM" UUID="6275-6275" TYPE="vfat"
    ...but, for some reason, Oracle VM Manager isn't presenting the second HDD (i.e., /dev/sdb) for use as a local repository.

    Right?
  • 17. Re: OVM 3.2.1 doesn't discover local disk
    user739062 Newbie
    Currently Being Moderated
    Yes, this is correct:
    /dev/sda is used for the Oracle VM Server installation:
    /dev/sdb is empty and should be made available to Oracle VM Manager as a local repository
    /dev/sdc is used for something els

    # service multpathd status
    multpathd: unrecognized service
    # service multpathd start
    multpathd: unrecognized service
    # chkconfig multipathd on
    # service multpathd start
    multpathd: unrecognized service
    # cat /etc/blacklisted.wwids
    wwid "3600605b0057ed740188c4f8c0b942af4"
    #
  • 18. Re: OVM 3.2.1 doesn't discover local disk
    user739062 Newbie
    Currently Being Moderated
    It looks like multipath is installed and somewhat working (according to a few commands I found on the Internet):

    # chkconfig --list | grep multipath
    multipathd 0:off 1:off 2:on 3:on 4:on 5:on 6:off
    # multipath -v2 -d
    Feb 19 19:00:02 | /sbin/scsi_id exitted with 1
    Feb 19 19:00:02 | /sbin/scsi_id exitted with 1
    create: 3600605b0057ed740188c4f8d0b9d2129 undef LSI,MR9261-8i
    size=3.8T features='0' hwhandler='0' wp=undef
    `-+- policy='round-robin 0' prio=1 status=undef
    `- 0:2:1:0 sdb 8:16 undef ready running
    # multipath -ll
    #
  • 19. Re: OVM 3.2.1 doesn't discover local disk
    user739062 Newbie
    Currently Being Moderated
    I assume that I am started multipath:

    # service multipathd start
    Starting multipathd daemon: [  OK  ]
    # service multipathd status
    multipathd (pid 9017) is running...
    # multipath -ll
    3600605b0057ed740188c4f8d0b9d2129 dm-0 LSI,MR9261-8i
    size=3.8T features='0' hwhandler='0' wp=rw
    `-+- policy='round-robin 0' prio=1 status=active
    `- 0:2:1:0 sdb 8:16 active ready running
    [root@slcaj473 mapper]# multipath -v2
    Feb 19 19:17:54 | /sbin/scsi_id exitted with 1
    Feb 19 19:17:54 | /sbin/scsi_id exitted with 1
    [root@slcaj473 mapper]#

    And now I see the disk in Oracle VM Maneger console!!!!!!!!

    Thank you very much!
  • 20. Re: OVM 3.2.1 doesn't discover local disk
    user739062 Newbie
    Currently Being Moderated
    By the way, why we need multipath for the local disk? From I read so far, it is rather for external storage. In one place I read: "Some machines have local SCSI cards for their internal disks. DM-Multipath is not recommended for these devices."
  • 21. Re: OVM 3.2.1 doesn't discover local disk
    960874 Newbie
    Currently Being Moderated
    user739062 wrote:
    By the way, why we need multipath for the local disk?...
    Oracle VM Manager has strange requirements. e.g., The requirement that the disk be devoted completely to OVM/OVS.
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