Re: request size limit in scsi tape driver

2012-08-23 Thread Olaf Hering
On Mon, Aug 20, Kai Makisara wrote: > On Mon, 20 Aug 2012, Olaf Hering wrote: > > > > > Currently the st driver does not to break up write requests into smaller > > chunks to satisfy the ->max_hw_sectors limit of the underlying host driver. > > > > # modprobe -v scsi_debug ptype=1 opts=1 dev_s

Re: request size limit in scsi tape driver

2012-08-20 Thread Kai Makisara
On Mon, 20 Aug 2012, Olaf Hering wrote: > > Currently the st driver does not to break up write requests into smaller > chunks to satisfy the ->max_hw_sectors limit of the underlying host driver. > > # modprobe -v scsi_debug ptype=1 opts=1 dev_size_mb=123 > # dd if=/dev/zero of=/dev/st0 bs=$((1

request size limit in scsi tape driver

2012-08-20 Thread Olaf Hering
Currently the st driver does not to break up write requests into smaller chunks to satisfy the ->max_hw_sectors limit of the underlying host driver. # modprobe -v scsi_debug ptype=1 opts=1 dev_size_mb=123 # dd if=/dev/zero of=/dev/st0 bs=$((1024*54321)) This leads to -EBUSY from this call chai