Re: XATTR bugs

[Jeff Mahoney <jeffm@suse.com>]

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Fredrik Tolf wrote:
| These are not the greatest problems with the XATTR patches,
| though; they were only what I discovered initially. The greatest
| problem (I don't know if this might not appear on 2.4 kernels, but it
| certainly did occur on all my 2.6 kernels) is that ACLs can suddenly
| "disappear".
|
| I don't know exactly what it was that happened, but sometimes (without
| any pattern that I could notice), the ACLs would simply become
| ineffective. The XATTR for the ACLs was still there, but it was as if
| it wasn't taken into account for any kind of operation. When checking
| with getfattr, the ACL attribute was still there and looked just as it
| did before whatever happened happened, but in every other aspect it
| was as if it wasn't there anymore. The only way to solve it was to run
| "setfacl -b" on the affected file and then recreate the ACL.
|
| In fact, this forced me to abandon ReiserFS in favor of XFS.
| Regrettable as it may be, I didn't want to live without ACLs, and I
| had too much on my hands to start debugging it... :-(

This is the first I've heard of this behavior. Do you have a reliable
way of reproducing it? I realize that you said you didn't find a
pattern, but what was the workload you were applying to the ACLs?

Thanks.

- -Jeff

- --
Jeff Mahoney
SuSE Labs
jeffm@suse.com
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