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Re: Home directories

On Apr 12, 2004, at 7:50 PM, Surajit A Bose wrote:

For example, if a user is close to full on their disk quota, login hangs, or if it completes, the user experiences random application crashes. Also, ~/Library/Preferences randomly gets corrupted for some users, showing up as a file instead of a directory and causing much consternation. Finally, we're on 10.2.8 right now, but in our development of a Panther image for the fall, we've discovered that opening a file in AFS space, modifying it, and trying to save it results in a kernel panic on occasion: invariably when using SubEthaEdit, randomly when using Microsoft Word. (Our AFS folks tell me that this is due to some weird interaction between the Panther Finder and OpenAFS, but that isn't too helpful when it comes to resolving the issue.)

We use AFS home directories at Duke. We've seen problems when a user is over quota but the benefits of most users being able to "carry" preferences around has outweighed the quota problems. And the user can request additional space as well.

However, the kernel panics you describe in Panther are alarming. Is this also tied with quota problems or is this just general AFS access issues regardless of quota?

CMU might be an interesting model to examine. They use local home directories created "on the fly" at login but the Library, Desktop, (and maybe Documents) folders are symlinked back to the user's AFS space. This allows users under quota to carry preferences from machine to machine but according to CMU greatly reduces the weirdness that can happen with over quota users who's home directories are mapped to their AFS space.

Thanks,
Debbie
. . . . . . . . . . . . .
Debrah Suggs
OIT Systems and Core Services
email@hidden
http://www.duke.edu/~dds/
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References: 
 >Home directories (From: Surajit A Bose <email@hidden>)



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