Hello TSMers! After upgrading the TSM Linux client on one of our fileservers (x68_64) from 5.3.5 to 5.4.1, the next incremental started to backup all files again. I traced this to a change in the handling of filesystem ACLs by the TSM client.
The filesystem in question is xfs. For the time being, I went back to 5.3.5 (server is 5.4.1.0 on W2K3). I can live with that for a while. I traced the problem with strace and client -TRACEFLags=service. This shows that the 5.4 does not use the libacl interface, but accesses the extended attributes directly with the getxattr system call. And indeed, the TSM client trace shows this: 04.02.2008 12:48:39.468 : unxfilio.cpp (1571): fioCmpAttribs: Attribute comparison of two directories Attribute Old New --------- --- --- File mode 16893 16893 uid 501 501 gid 100 100 ACL size 424 0 ACL checksum 3721320641 0 Xattr size 0 494 Xattr checksum 0 3013615671 04.02.2008 12:48:39.468 : fileio.cpp (4627): fioCmpAttribs(): old attrib's data from build (IBM TSM 5.4.1.2) 04.02.2008 12:48:39.468 : unxfilio.cpp (1825): -->Attribs different: returning ATTRIBS_BACKUP It is interesting that in Technote swg21249081 libacl is mentioned as a potential problem to look for, but not getxattr. I made sure that libacl is present, but the strace output shows that it isn't used. This is very annoying. It means that the TSM client will probably force a backup of every file with an ACL when I upgrade from 5.3 to 5.4. Is this change documented somewhere? Is there a way to go back to either using libacl with the 5.4 client, or get the same ACL size/checksum from the Attributes comparison? Rainer Schöpf -------------------------------------------------------- ProteoSys AG Carl-Zeiss-Straße 51 55129 Mainz Dr. Rainer Schöpf Leiter Software/Softwareentwicklung Mail: [EMAIL PROTECTED] Phone: +49-(0)6131-50192-41 Fax: +49-(0)6131-50192-11 WWW: http://www.proteosys.com/ -------------------------------------------------------- ProteoSys AG - Carl-Zeiss-Str. 51 - D-55129 Mainz Amtsgericht Mainz HRB 7508 - USt.-Id Nr.: DE213940570 Vorstand: Helmut Matthies (Vorsitzender), Prof. Dr. André Schrattenholz Vorsitzender des Aufsichtsrates: Dr. Werner Zöllner
