> I talked with a few filesystem experts within Red Hat. They said... > - ext3 has a limit of 4KB for xattr data. If you use the standard encoding of > 8 bytes per uid, that has a limit of roughly 100 entities that could be > associated with a file. Is this too limiting? I dunno. Perhaps it need not > be too limiting if more extensive use of group-based-ACL's are used. > - XFS could possibly allow a maximum of 64KB xattr's per file, but that is > very inefficient in filesystem storage. > - xattr's are currently not supported by NFS. The other thing to concider is backup and restore of acls and xattrs. I think this area is probably a weak spot as well but I believe star and rsync do have some kind of support for acls. -- Matthew Galgoci GIS Production Operations Red Hat, Inc 919.754.3700 x44155
