Re: [LTP] [xfs] 73e5fff98b: kmsg.dev/zero:Can't_open_blockdev

From: Jan Stancek
Date: Tue Nov 12 2019 - 07:02:30 EST



----- Original Message -----
> >
> > If you fix the issue, kindly add following tag
> > Reported-by: kernel test robot <rong.a.chen@xxxxxxxxx>
> >
> > [ 135.976643] LTP: starting fs_fill
> > [ 135.993912] /dev/zero: Can't open blockdev
>
> I've looked at the github source but I don't see how to find out what
> command was used when this error occurred so I don't know even how to
> start to work out what might have caused this.
>
> Can you help me to find the test script source please.

https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/fs/fs_fill/fs_fill.c

Setup of that test is trying different file system types, and it looks
at errno code of "mount -t $fs /dev/zero /mnt/$fs".

Test still PASSes. This report appears to be only about extra message in dmesg,
which wasn't there before:

# mount -t xfs /dev/zero /mnt/xfs
# dmesg -c
[ 897.177168] /dev/zero: Can't open blockdev

Regards,
Jan