mount giving "device busy" error

mount giving "device busy" error

Post by Philip Morga » Sat, 13 Feb 1999 04:00:00



Hi,

I'm having a problem with NetBSD1.3 running on an AlphaStation 200.  I have
two external SCSI hard drives (attached to the built-in controller) that are
refusing to mount.  mount -A gives the following:

mount_ffs: /dev/sd1c on /drive1: Device busy
mount_ffs: /dev/sd2c on /drive2: Device busy

Any ideas why this might be happening and how to fix it?

Thanks,
--Philip.

 
 
 

1. mount -o remount,ro cause error "device is busy"

hi, all;
        I have upgraded my kernel to version 2.4.
And i have tested 2.4.16 and 2.4.18. Both of these
two version have the same problem when system reboot.
"/: device is busy";
in shutdown script:
umount -a
mount -n -o ro,remount /
these two line result error: device is busy.

I switch to init 1, and all user process go away.
except the following:
root         1  0.1  0.7  1056  484 ?        S    15:46   0:04 init [S]
root         2  0.0  0.0     0    0 ?        SW   15:46   0:00 [keventd]
root         3  0.0  0.0     0    0 ?        SWN  15:46   0:00 [ksoftirqd_CPU0]
root         4  0.0  0.0     0    0 ?        SW   15:46   0:00 [kswapd]
root         5  0.0  0.0     0    0 ?        SW   15:46   0:00 [bdflush]
root         6  0.0  0.0     0    0 ?        SW   15:46   0:00 [kupdated]
root      1042  0.0  0.7  1056  484 tty1     S    16:33   0:00 init [S]
root      1043  0.6  1.5  1840 1004 tty1     S    16:33   0:00 /bin/sh
root      1045  0.0  1.0  2260  680 tty1     R    16:33   0:00 ps aux

then i try
mount -o ro,remount /
error occurs: device is busy.

and i try
mount -o ro,remount /usr
(another partition)
also error occurs: device is busy.

but when i try umount /usr,
it works.

certainly, there is error
device is busy for command umount /.

How can i resolve this problem?

Regards;
Michael

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