Hit a bug with multipath-tools that is fixed upstream http://git.kernel.org/gitweb.cgi?p=linux/storage/multipath/hare/multipath-tools.git;a=commit;h=e1d69df0cdd1627676501df3a533b25ffadaeff0 I have a workaround -- simply modified /etc/init.d/multipathd to use the -d option and then force it to run in the background. Please see the above link to upstream on the details. Simple one line fix to log.c Captured strace of failure messages: 11879 write(2, "======= Backtrace: =========\n", 29) = 29 11879 writev(2, [{"/lib64/libc.so.6", 16}, {"(", 1}, {"__fortify_fail", 14}, {"+0x", 3}, {"37", 2}, {")", 1}, {"[0x", 3}, {"7fb9106b06f7", 12}, {"]\n", 2}], 9) = 54 11879 writev(2, [{"/lib64/libc.so.6", 16}, {"(", 1}, {"+0x", 3}, {"ee510", 5}, {")", 1}, {"[0x", 3}, {"7fb9106ae510", 12}, {"]\n", 2}], 8) = 43 11879 writev(2, [{"/lib64/libmultipath.so.0", 24}, {"(", 1}, {"log_enqueue", 11}, {"+0x", 3}, {"12b", 3}, {")", 1}, {"[0x", 3}, {"7fb91097419b", 12}, {"]\n", 2}], 9) = 60 11879 writev(2, [{"/lib64/libmultipath.so.0", 24}, {"(", 1}, {"log_safe", 8}, {"+0x", 3}, {"60", 2}, {")", 1}, {"[0x", 3}, {"7fb910973d00", 12}, {"]\n", 2}], 9) = 56 11879 writev(2, [{"/lib64/libmultipath.so.0", 24}, {"(", 1}, {"dlog", 4}, {"+0x", 3}, {"b6", 2}, {")", 1}, {"[0x", 3}, {"7fb910968ef6", 12}, {"]\n", 2}], 9) = 52 11879 writev(2, [{"/lib64/libmultipath.so.0", 24}, {"(", 1}, {"start_waiter_thread", 19}, {"+0x", 3}, {"11f", 3}, {")", 1}, {"[0x", 3}, {"7fb910978acf", 12}, {"]\n", 2}], 9) = 68 11879 writev(2, [{"multipathd", 10}, {"[0x", 3}, {"4079e2", 6}, {"]\n", 2}], 4) = 21 11879 writev(2, [{"multipathd", 10}, {"[0x", 3}, {"408118", 6}, {"]\n", 2}], 4) = 21 11879 writev(2, [{"/lib64/libc.so.6", 16}, {"(", 1}, {"__libc_start_main", 17}, {"+0x", 3}, {"fd", 2}, {")", 1}, {"[0x", 3}, {"7fb9105e209d", 12}, {"]\n", 2}], 9) = 57 11879 writev(2, [{"multipathd", 10}, {"[0x", 3}, {"4055d9", 6}, {"]\n", 2}], 4) = 21
Fixed in Cvs
