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  1. 22 10月, 2010 3 次提交
    • K
      ide: Handle flush failure · e2bcadad
      由 Kevin Wolf 提交于 
      Instead of always assuming success for bdrv_aio_flush, actually do something
with the error. This respects the werror option and accordingly ignores the
error, reports it to the guest or stops the VM and retries after cont.

Ignoring the error is trivial, obviously. For stopping the VM and retrying
later old code can be reused, but we need to introduce a new status for "retry
a flush". For reporting to the guest, fortunately the same action is required
as for a failed read/write (status = DRDY | ERR, error = ABRT), so this code
can be reused as well.
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
      e2bcadad
    • K
      ide: Factor ide_flush_cache out · 6bcb1a79
      由 Kevin Wolf 提交于 
      The next patch reuses this code, so put it in its own function.
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
      6bcb1a79
    • C
      ide: set WCACHE supported in IDENTIFY data · a58b8d54
      由 Christoph Hellwig 提交于 
      ATA does not only have the WCACHE enabled bit in identify word 85, but also
a WCACHE supported bit in word 82.  While the Linux kernel is fine with the
latter at least hdparm also needs the former before correctly displaying
the cache settings.  There's also a non-zero chance other operating systems
are more picky in their volatile write cache detection.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
      a58b8d54
  3. 21 9月, 2010 1 次提交
    • C
      ide: propagate the required alignment · 1b2adf28
      由 Christoph Hellwig 提交于 
      IDE is a bit ugly in this respect.  For one it doesn't really keep track
of a sector size - most of the protocol is in units of 512 bytes, and we
assume 2048 bytes for CDROMs which is correct most of the time.

Second IDE allocates an I/O buffer long before we know if we're dealing
with a CDROM or not, so increase the alignment for the io_buffer
unconditionally.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
      1b2adf28
  5. 08 9月, 2010 1 次提交
  7. 24 8月, 2010 1 次提交
    • B
      Rearrange block headers · 2446333c
      由 Blue Swirl 提交于 
      Changing block.h or blockdev.h resulted in recompiling most objects.

Move DriveInfo typedef and BlockInterfaceType enum definitions
to qemu-common.h and rearrange blockdev.h use to decrease churn.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
      2446333c
  9. 27 7月, 2010 3 次提交
  11. 26 7月, 2010 1 次提交
    • A
      ide/atapi: add support for GET EVENT STATUS NOTIFICATION · 253cb7b9
      由 Aurelien Jarno 提交于 
      The GET EVENT STATUS NOTIFICATION is a mandatory command according
to MMC-3, even if event status notification is not supported.

This patch adds support for this command. It returns NEA ("No Event
Available") with an empty "Supported Event Classes" to show that it
doesn't event support status notification. If asychronous operation is
requested, which requires NCQ support, it returns an error according
to the specifications.

This fixes HAL support on FreeBSD and derivatives, which fill up the
logs every second with:

  acd0: FAILURE - unknown CMD (0x03) ILLEGAL REQUEST asc=0x20 ascq=0x00
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
      253cb7b9
  13. 13 7月, 2010 1 次提交
  15. 06 7月, 2010 4 次提交
  17. 02 7月, 2010 2 次提交
    • M
      block: Fix virtual media change for if=none · 7d0d6950
      由 Markus Armbruster 提交于 
      BlockDriverState member removable controls whether virtual media
change (monitor commands change, eject) is allowed.  It is set when
the "type hint" is BDRV_TYPE_CDROM or BDRV_TYPE_FLOPPY.

The type hint is only set by drive_init().  It sets BDRV_TYPE_FLOPPY
for if=floppy.  It sets BDRV_TYPE_CDROM for media=cdrom and if=ide,
scsi, xen, or none.

if=ide and if=scsi work, because the type hint makes it a CD-ROM.
if=xen likewise, I think.

For the same reason, if=none works when it's used by ide-drive or
scsi-disk.  For other guest devices, there are problems:

* fdc: you can't change virtual media

    $ qemu [...] -drive if=none,id=foo,... -global isa-fdc.driveA=foo
    QEMU 0.12.50 monitor - type 'help' for more information
    (qemu) eject foo
    Device 'foo' is not removable

  unless you add media=cdrom, but that makes it readonly.

* virtio: if you add media=cdrom, you can change virtual media.  If
  you eject, the guest gets I/O errors.  If you change, the guest sees
  the drive's contents suddenly change.

* scsi-generic: if you add media=cdrom, you can change virtual media.
  I didn't test what that does to the guest or the physical device,
  but it can't be pretty.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
      7d0d6950
    • M
      qdev: Decouple qdev_prop_drive from DriveInfo · f8b6cc00
      由 Markus Armbruster 提交于 
      Make the property point to BlockDriverState, cutting out the DriveInfo
middleman.  This prepares the ground for block devices that don't have
a DriveInfo.

Currently all user-defined ones have a DriveInfo, because the only way
to define one is -drive & friends (they go through drive_init()).
DriveInfo is closely tied to -drive, and like -drive, it mixes
information about host and guest part of the block device.  I'm
working towards a new way to define block devices, with clean
host/guest separation, and I need to get DriveInfo out of the way for
that.

Fortunately, the device models are perfectly happy with
BlockDriverState, except for two places: ide_drive_initfn() and
scsi_disk_initfn() need to check the DriveInfo for a serial number set
with legacy -drive serial=...  Use drive_get_by_blockdev() there.

Device model code should now use DriveInfo only when explicitly
dealing with drives defined the old way, i.e. without -device.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
      f8b6cc00
  19. 15 6月, 2010 1 次提交
  21. 04 6月, 2010 6 次提交
  23. 17 5月, 2010 1 次提交
    • K
      ide: Fix ide_dma_cancel · 38d8dfa1
      由 Kevin Wolf 提交于 
      When cancelling a request, bdrv_aio_cancel may decide that it waits for
completion of a request rather than for cancellation. IDE therefore can't
abandon its DMA status before calling bdrv_aio_cancel; otherwise the callback
of a completed request would use invalid data.
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
      38d8dfa1
  25. 15 5月, 2010 1 次提交
  27. 27 3月, 2010 2 次提交
  29. 09 3月, 2010 1 次提交
  31. 20 2月, 2010 2 次提交
  33. 11 2月, 2010 3 次提交
    • C
      ide: add topology support · 0009baf1
      由 Christoph Hellwig 提交于 
      Export the physical block size in the ATA IDENTIFY command.  The
other topology values are not supported in ATA so skip them.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      0009baf1
    • C
      block: add topology qdev properties · 428c149b
      由 Christoph Hellwig 提交于 
      Add three new qdev properties to export block topology information to
the guest.  This is needed to get optimal I/O alignment for RAID arrays
or SSDs.

The options are:

 - physical_block_size to specify the physical block size of the device,
   this is going to increase from 512 bytes to 4096 kilobytes for many
   modern storage devices
 - min_io_size to specify the minimal I/O size without performance impact,
   this is typically set to the RAID chunk size for arrays.
 - opt_io_size to specify the optimal sustained I/O size, this is
   typically the RAID stripe width for arrays.

I decided to not auto-probe these values from blkid which might easily
be possible as I don't know how to deal with these issues on migration.

Note that we specificly only set the physical_block_size, and not the
logial one which is the unit all I/O is described in.  The reason for
that is that IDE does not support increasing the logical block size and
at last for now I want to stick to one meachnisms in queue and allow
for easy switching of transports for a given backing image which would
not be possible if scsi and virtio use real 4k sectors, while ide only
uses the physical block exponent.

To make this more common for the different block drivers introduce a
new BlockConf structure holding all common block properties and a
DEFINE_BLOCK_PROPERTIES macro to add them all together, mirroring
what is done for network drivers.  Also switch over all block drivers
to use it, except for the floppy driver which has weird driveA/driveB
properties and probably won't require any advanced block options ever.

Example usage for a virtio device with 4k physical block size and
8k optimal I/O size:

  -drive file=scratch.img,media=disk,cache=none,id=scratch \
  -device virtio-blk-pci,drive=scratch,physical_block_size=4096,opt_io_size=8192

aliguori: updated patch to take into account BLOCK events
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      428c149b
    • L
      ide: Generate BLOCK_IO_ERROR QMP event · 7ad7e3c3
      由 Luiz Capitulino 提交于 
      Just call bdrv_mon_event() in the right place.
Signed-off-by: NLuiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      7ad7e3c3
  35. 20 1月, 2010 1 次提交
    • G
      ide: device version property · 47c06340
      由 Gerd Hoffmann 提交于 
      This patch adds a new property named 'ver' to ide-drive which allows to
specify the version which the virtual disk/cdrom should report to the
guest.  By default this is the qemu version (i.e. 0.12).  usage:

  -drive if=none,id=disk,file=...
  -device ide-drive,bus=ide.0,unit=0,drive=disk,ver=42

You can also switch the version for all ide drives using:

  -global ide-drive.ver=42
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      47c06340
  37. 04 12月, 2009 4 次提交
  39. 09 11月, 2009 1 次提交