Ceph

Chen Xiaoxi points out on ceph-devel:

Here is part of /etc/init.d/ceph script:
case "$command" in
        start)
       # Increase max_open_files, if the configuration calls for it.
            get_conf max_open_files "8192" "max open files" 
            if [ $max_open_files != "0" ]; then
           # Note: Don't try to do math with these numbers, because POSIX shells
           # can't do 64-bit math (natively). Just treat them as strings.
                cur=`ulimit -n`
                if [ "x$max_open_files" != "x$cur" ]; then
Line253:                  ulimit -n $max_open_files    
                fi
            fi

When using with -a option, for remote osd , this script also run ulimit on local, and results in ulimit -n didn't change in remote nodes. I think the Line 253 shoud use do_cmd instead of run directly,also line 251.