hello

please help, in my debian 8 this services don't wanna start anymore:
postfix,mysql,redis

some strange things with permission denied and i don't know how to debug it:

# systemctl status mysql.service
● mysql.service - MySQL Community Server
   Loaded: loaded (/lib/systemd/system/mysql.service; enabled)
   Active: activating (start-post) (Result: exit-code) since Вс 2015-10-11 16:57:29 MSK; 1min 54s ago
  Process: 18410 ExecStart=/usr/bin/mysqld_safe (code=exited, status=203/EXEC)
  Process: 18406 ExecStartPre=/usr/share/mysql/mysql-systemd-start pre (code=exited, status=0/SUCCESS)
 Main PID: 18410 (code=exited, status=203/EXEC);         : 18411 (mysql-systemd-s)
   CGroup: /system.slice/mysql.service
           └─control
             ├─18411 /bin/bash /usr/share/mysql/mysql-systemd-start post
             └─18754 sleep 1

окт 11 16:57:29 fs.annett systemd[18410]: Failed at step EXEC spawning /usr/bin/mysqld_safe: Permission denied
окт 11 16:57:29 fs.annett systemd[1]: mysql.service: main process exited, code=exited, status=203/EXEC

root@fs:/etc/init.d# journalctl -xn
-- Logs begin at Сб 2015-10-10 21:58:00 MSK, end at Вс 2015-10-11 16:58:11 MSK. --
окт 11 16:56:20 fs.annett postfix/local[18165]: 7B5A31355: to=<root@fs.annett>, orig_to=<root>, relay=local, delay=24439, delays=24439/0.07/0/0.03, dsn=4.3.0, status=deferred (temporary failur
окт 11 16:57:29 fs.annett systemd[1]: mysql.service start-post operation timed out. Stopping.
окт 11 16:57:29 fs.annett systemd[1]: Failed to start MySQL Community Server.
-- Subject: Unit error mysql.service
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--.
-- Произошел сбой юнита mysql.service.
--.
-- Результат: failed.
окт 11 16:57:29 fs.annett systemd[1]: Unit mysql.service entered failed state.
окт 11 16:57:29 fs.annett systemd[18410]: Failed at step EXEC spawning /usr/bin/mysqld_safe: Permission denied
-- Subject: Не удалось запустить процесс /usr/bin/mysqld_safe
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--.
-- Error: can't start process /usr/bin/mysqld_safe.
--.
-- Error code: 13.
окт 11 16:57:29 fs.annett systemd[1]: mysql.service: main process exited, code=exited, status=203/EXEC



# strace -f -e execve ./postfix start
execve("./postfix", ["./postfix", "start"], [/* 31 vars */]) = 0
Process 32289 attached
[pid 32289] execve("/bin/run-parts", ["run-parts", "--lsbsysinit", "--list", "/lib/lsb/init-functions.d"], [/* 31 vars */]) = 0
[pid 32289] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=32289, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
Process 32290 attached
[pid 32290] execve("/bin/readlink", ["readlink", "-f", "./postfix"], [/* 31 vars */]) = 0
[pid 32290] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=32290, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
Process 32291 attached
[pid 32291] execve("/bin/systemctl", ["systemctl", "-p", "CanReload", "show", "postfix.service"], [/* 31 vars */]) = 0
[pid 32291] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=32291, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
Process 32292 attached
[pid 32292] execve("/bin/systemctl", ["systemctl", "-p", "LoadState", "show", "postfix.service"], [/* 31 vars */]) = 0
[pid 32292] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=32292, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
Process 32293 attached
[pid 32293] execve("/usr/bin/tput", ["/usr/bin/tput", "hpa", "60"], [/* 31 vars */]) = 0
[pid 32293] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=32293, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
Process 32294 attached
[pid 32294] execve("/usr/bin/tput", ["/usr/bin/tput", "setaf", "1"], [/* 31 vars */]) = 0
[pid 32294] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=32294, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
[....] Starting postfix (via systemctl): postfix.serviceProcess 32295 attached
[pid 32295] execve("/bin/systemctl", ["/bin/systemctl", "start", "postfix.service"], [/* 31 vars */]) = 0
Process 32296 attached
[pid 32296] execve("/bin/systemd-tty-ask-password-agent", ["/bin/systemd-tty-ask-password-ag"..., "--watch"], [/* 31 vars */]) = 0
^CProcess 32288 detached
Process 32295 detached
Process 32296 detached

freeze at "/bin/systemd-tty-ask-password-agent"


also postfix has this in mail logs: fatal: execl /bin/sh: Permission denied

# ll /bin/sh /bin/dash
-rwxr-xr-x 1 root root 125400 ноя  8  2014 /bin/dash
lrwxrwxrwx 1 root root      4 ноя  8  2014 /bin/sh -> dash


any ideas what to do?