[Qemu-devel] sr 3:0:0:0: Device not ready: <6>: Current: sense key: Not Ready

[Volkan YAZICI]

Hi,

In one of our qemu pre-production servers, system dumps thousands of
lines of below error message to the screen. (Below snippet is from dmesg
output.)

  sr 3:0:0:0: Device not ready: <6>: Current: sense key: Not Ready
  Additional sense: Medium not present
  end_request: I/O error, dev sr0, sector 68

I suspect USB disk mounted as /dev/sdb1 to be the cause of the
problem. Below are some related qemu statistics.

  (qemu) info block
  info block
  ide1-cd0: type=cdrom removable=1 locked=0 file=/dev/cdrom ro=0 drv=host_device
  ide0-hd0: type=hd removable=0 file=/home/windows/qcow2-20g.img ro=0 drv=qcow2
  ide0-hd1: type=hd removable=0 file=/home/windows/qcow2-40g.img ro=0 drv=qcow2
  ide1-hd1: type=hd removable=0 file=/home/windows/qcow2-430g.img ro=0 drv=qcow2
  floppy0: type=floppy removable=1 locked=0 [not inserted]
  sd0: type=floppy removable=1 locked=0 [not inserted]

  (qemu) info blockstats
  info blockstats
  ide1-cd0: rd_bytes=0 wr_bytes=0 rd_operations=0 wr_operations=0
  ide0-hd0: rd_bytes=324134400 wr_bytes=20435968 rd_operations=49396 
wr_operations=1952
  ide0-hd1: rd_bytes=3418112 wr_bytes=403456 rd_operations=552 wr_operations=30
  ide1-hd1: rd_bytes=40713728 wr_bytes=877568 rd_operations=6536 
wr_operations=120
  floppy0: rd_bytes=0 wr_bytes=0 rd_operations=0 wr_operations=0
  sd0: rd_bytes=0 wr_bytes=0 rd_operations=0 wr_operations=0

Does anybody have an idea? What might be the problem?


Regards.