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  • December 7, 2005 at 7:28 am #364315
    LazLong
    Participant

    I am in the process of improving our NetBoot environment. Currently, our admins have to copy NB images around to the various NB servers, which is annoying. I thought Xsan would sovlve this, but you can’t host NB images from Xsan volumes.

    http://docs.info.apple.com/article.html?artnum=300629

    This is REALLY annoying. So, I thought another possible solution would be to use host LUN filtering. i.e. Map a LUN to one server as read/write, and to the rest of the servers as read-only. The problem is, while the Mac to which filtering is set to read-only can ‘see’ the storage, it won’t mount it.

    Has anyone any suggestions as to whether or not I can provide concurrent read-only access to SAN volumes w/o Xsan?

    December 29, 2005 at 3:52 am #364563
    LazLong
    Participant

    Hurm….You were right. The read-only LUN mapping was the culprit, not the fact that the volume was being simultanously accessed. I should have tried this from the get-go, but concurrently mounting filesystems rw w/o some sor of SAN fs is counterintuitive to me. 😉

    Once I mapped the volume rw for both of my test systems they were able to mount the volume simultaneously. Next up is to test putting the NB images on this volume.

    Thanx for the pointer.

    January 25, 2006 at 6:01 am #364940
    LazLong
    Participant

    Macshome:

    Server Admin won’t let me use the read-only mounted volume as a source for NB images. I have to mount the volume RW so that NetBoot starts, and then remount it RO. F’ing stupid.

    Soooo….Either my desktop support people are going to have to maintain multiple copies of the NB images (one per server), or endure a ‘special’ startup procedure for each ‘slave’ (one that must mount the volume RO) server that includes unmounting and remounting. Blech. Wish OS X’s mount had the ‘remount’ option that the GNU one has.

    Thanx for all of your previous help.

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