Hi John.

You might want to speak to H. Richter from LRZ. They have connected AFS to ADSM
with ... interesting ... results. his e.mail is:
Helmut.Richter AT lrz-muenchen DOT de.

Also, we are thinking of organising an ADSM large Eueropean Sites U.G. (with
"large" meaning at least 1 million files stored in a server or thousands of
clients supported). Would your Centre be a candidate for this? would you be
interested to join such a venture?

On Jan 18,  3:36pm, John O'Neall wrote:
<=> Subject: ADSM and AFS
<=>Hello,
<=>
<=>I don't know how many sites out there are using or would like to use ADSM
<=>with AFS file systems, but I suspect we're not the only ones. It would be
<=>nice if AFS support were more complete.  For instance, I have observed the
<=>following behavior of ADSM in this respect. Sorry if this is a bit long,
<=>but non-AFS people can stop now.  IMBers, please continue.
<=>
<=>AFS correctly backs up and restores ACLs on directories:  During
<=>incremental backup of a file system in which an ACL on a directory has
<=>changed since the last backup, ADSM backs up the modified directory and,
<=>later, restores the latest ACL correctly.
<=>
<=>Aside from the backup and recover of ACLs, ADSM ignores the existence of
<=>AFS, altho it is subject to ACLs during backup and recovery operations:
<=>
<=>- In order to backup a file, one must be its owner (or root) and also
<=>have the right (ACL) to read in the directory where the file is located.
<=>
<=>- To recover a file, one must be its owner (or root) and must also have
<=>the right (ACL) to write in the directory (not necessarily the original
<=>one) to which one recovers the file.
<=>
<=>- On the contrary, one may archive any file one has the right (ACL) to
<=>read.  After retrieve, the retrieved file is the property of the user who
<=>archived it.
<=>
<=>ADSM ignores distributed file systems in the sense that one can only
<=>recover backed up files on the same station where the file was backed up.
<=>Of course, one can use the 'dsmc set access' command to permit a user on
<=>another station to recover it, but then one must think carefully about
<=>whether one wants to use the default UNIX (owner) rights or do 'set
<=>access' based on AFS ACLs.
<=>
<=>I would like to see improvements in AFS support, especially taking ACLs
<=>into account and not just UNIX file ownership.  After all, even AIX sans
<=>AFS has ACLs.
<=>
<=>John
<=>
<=>--------------------------------------------------------------
<=>John O'Neall                         e-mail:  jon AT cc.in2p3 DOT fr
<=>Centre de Calcul de l'IN2P3          phone:   (33) 78 93 08 80
<=>Villeurbanne, France                 fax:     (33) 78 94 30 54
<=> End of excerpt from John O'Neall



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