[Qemu-devel] [Bug 1600563] [NEW] min_io_size is currently limited to size uint16_t

[Alex]

Public bug reported:

I am using LVM VGs on MD-raid1 for hosting my KVM volumes. On the host,
a VG looks like this:

Disk /dev/vm/vol202a: 60 GiB, 64424509440 bytes, 125829120 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 131072 bytes / 131072 bytes

In order to replicate the block device characteristics in the guest, I
am using the following extra parameters:

-set device.scsi0-0-0-0.logical_block_size=512
-set device.scsi0-0-0-0.physical_block_size=4096
-set device.scsi0-0-0-0.min_io_size=131072

This doesn't work as qemu complains that min_io_size needs to be of type
uint16_t.

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1600563

Title:
  min_io_size is currently limited to size uint16_t

Status in QEMU:
  New

Bug description:
  I am using LVM VGs on MD-raid1 for hosting my KVM volumes. On the
  host, a VG looks like this:

  Disk /dev/vm/vol202a: 60 GiB, 64424509440 bytes, 125829120 sectors
  Units: sectors of 1 * 512 = 512 bytes
  Sector size (logical/physical): 512 bytes / 4096 bytes
  I/O size (minimum/optimal): 131072 bytes / 131072 bytes

  In order to replicate the block device characteristics in the guest, I
  am using the following extra parameters:

  -set device.scsi0-0-0-0.logical_block_size=512
  -set device.scsi0-0-0-0.physical_block_size=4096
  -set device.scsi0-0-0-0.min_io_size=131072

  This doesn't work as qemu complains that min_io_size needs to be of
  type uint16_t.

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