Re: md device stuck!

On Monday July 29, martin@hack.org wrote:

hiya,

has anyone come across the problem of md devices getting 'stuck'?
currently, if i try to mount/umount md2, or run either raidstop or
mdadm --stop, the commands just hang and /proc/mdstat gives no indication
of anything going on. (the only way to kill the command seems to be to
SIGKILL its parent process...)

any ideas?

You didn't say which kernel you are running ......

dope:~ # ps -flw
  F S UID        PID  PPID  C PRI  NI ADDR SZ WCHAN  STIME TTY          TIME CMD
004 S root      4414  4413  0  72   0 -   506 norita 15:33 pts/4    00:00:00 -bash
000 D root      4438  4414  0  72   0 -   220 ptrace 15:34 pts/4    00:00:00 mdadm --stop /dev/md2

and you don't have a correct System.map file.  There is no-way that
mdadm will be blocked in ptrace.

NeilBrown