Hi, Recently I noticed what is to me is a very strange phenomenon: Read times on files are reverting to earlier values. The way I know (and noticed) this is that I read all the files in a particular directory at a specific time in order to monitor when another user later read those files. What I saw was that this directory listing: % ls -ltu total 176 -rwxrwxr-x 1 jhalcomb users 1033 2010-01-15 10:20 analyze* -rw-rw-r-- 1 jhalcomb users 3346 2010-01-15 10:20 defs-analyzed -rw-rw-r-- 1 jhalcomb users 3176 2010-01-15 10:20 defs-declared -rw-rw-r-- 1 jhalcomb users 212 2010-01-15 10:20 defs-pseudo -rw-rw-r-- 1 jhalcomb users 382 2010-01-15 10:20 defs-undeclared -rw-rw-r-- 1 jhalcomb users 641 2010-01-15 10:20 NIST-psl_outer_core-axm.sig -r--r--r-- 1 jhalcomb users 20549 2010-01-15 10:20 NIST-psl_outer_core.clif -rw-rw-r-- 1 jhalcomb users 4526 2010-01-15 10:20 NIST-psl_outer_core.defs -rw-rw-r-- 1 jhalcomb users 582 2010-01-15 10:20 NIST-psl_outer_core-def.sig -rw-rw-r-- 1 jhalcomb users 14765 2010-01-15 10:20 NIST-psl_outer_core-frag-ad.in -rw-rw-r-- 1 jhalcomb users 14542 2010-01-15 10:20 NIST-psl_outer_core-frag.in -rw-rw-r-- 1 jhalcomb users 14335 2010-01-15 10:20 NIST-psl_outer_core.in -rw-rw-r-- 1 jhalcomb users 710 2010-01-15 10:20 NIST-psl_outer_core.sig -rw-rw-r-- 1 jhalcomb users 9374 2010-01-15 10:20 NIST-psl_outer_core.toc -rw-rw-r-- 1 jhalcomb users 9002 2010-01-15 10:20 psl-1016-subset-618-lemmas.clif -rw-rw-r-- 1 jhalcomb users 1881 2010-01-15 10:20 psl28-theories -rwxrwxr-x 1 jhalcomb users 5947 2010-01-15 10:20 pslfrag* -rwxrwxr-x 1 jhalcomb users 8717 2010-01-15 10:20 pslprob* -rwxrwxr-x 1 jhalcomb users 5363 2010-01-15 10:20 pslsub* -rwxrwxr-x 1 jhalcomb users 161 2010-01-15 10:20 showfrags* -rwxrwxr-x 1 jhalcomb users 163 2010-01-15 10:20 showfrags-ad* ... later became this, without me doing anything: % ls -ltu total 176 -rwxrwxr-x 1 jhalcomb users 8717 2010-01-15 09:33 pslprob* -rwxrwxr-x 1 jhalcomb users 5947 2010-01-15 08:08 pslfrag* -rwxrwxr-x 1 jhalcomb users 5363 2010-01-15 08:08 pslsub* -rwxrwxr-x 1 jhalcomb users 1033 2010-01-13 13:22 analyze* -rw-rw-r-- 1 jhalcomb users 1881 2010-01-13 13:22 psl28-theories -rw-rw-r-- 1 jhalcomb users 4526 2010-01-13 13:15 NIST-psl_outer_core.defs -rw-rw-r-- 1 jhalcomb users 582 2010-01-13 13:15 NIST-psl_outer_core-def.sig -rw-rw-r-- 1 jhalcomb users 641 2010-01-13 13:15 NIST-psl_outer_core-axm.sig -rw-rw-r-- 1 jhalcomb users 710 2010-01-13 13:15 NIST-psl_outer_core.sig -rw-rw-r-- 1 jhalcomb users 9374 2010-01-13 13:15 NIST-psl_outer_core.toc -rw-rw-r-- 1 jhalcomb users 14765 2010-01-13 13:15 NIST-psl_outer_core-frag-ad.in -rw-rw-r-- 1 jhalcomb users 14542 2010-01-13 13:15 NIST-psl_outer_core-frag.in -rw-rw-r-- 1 jhalcomb users 14335 2010-01-13 13:15 NIST-psl_outer_core.in -rwxrwxr-x 1 jhalcomb users 163 2010-01-13 12:26 showfrags-ad* -rwxrwxr-x 1 jhalcomb users 161 2010-01-13 10:54 showfrags* -r--r--r-- 1 jhalcomb users 20549 2010-01-12 20:10 NIST-psl_outer_core.clif -rw-rw-r-- 1 jhalcomb users 212 2010-01-09 14:08 defs-pseudo -rw-rw-r-- 1 jhalcomb users 382 2010-01-09 14:07 defs-undeclared -rw-rw-r-- 1 jhalcomb users 3176 2010-01-09 14:06 defs-declared -rw-rw-r-- 1 jhalcomb users 3346 2010-01-09 14:03 defs-analyzed -rw-rw-r-- 1 jhalcomb users 9002 2009-04-21 10:27 psl-1016-subset-618-lemmas.clif Is this a known behavior of XFS? Or does it indicate some other process manipulating the read times on these files? (By the way, that other user I mention, the only other user on this system, is not sufficiently Unix- / Linux-savvy to deliberately manipulate file read times and has not used the system at all over the time period between the first and second directory listings shown above.) Randall Schulz -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org