Re: /dev/md0: Device or resource busy

[dean gaudet]

On Sun, 17 Mar 2002, Alan Cox wrote:

> > i just tried a "linux init=/bin/sh" boot, and it's still saying Device or
> > resource busy:
> >
> > init-2.05a# raidstop /dev/md0
> > md: md0 still in use.
> > /dev/md0: Device or resource busy
> > init-2.05a# mount /proc
>
> Duplicated. Seems the md code deos indeed have a bug there

ACK!  sorry.  it's not the kernel code, it's raidstop.  it seems to open
/dev/md0 an extra time for what reason i'm not sure.  it even does it when
you're referring to other md devices.  for example:

# strace raidstop /dev/md3
...
open("/dev/md0", O_RDONLY)              = 4
ioctl(4, 0x800c0910, 0x804fd1c)         = 0
open("/dev/md3", O_RDWR)                = 5
fstat64(5, {st_mode=S_IFBLK|0660, st_rdev=makedev(9, 3), ...}) = 0
ioctl(5, 0x932, 0)                      = 0
...

mdctl doesn't have this problem.

fwiw dpkg tells me i've got raidtools 0.90.20010914-9

-dean