1. 10 7月, 2009 1 次提交
  2. 30 6月, 2009 1 次提交
    • R
      support colon in filenames · 707c0dbc
      Ram Pai 提交于
      Problem: It is impossible to feed filenames with the character colon because
      qemu interprets such names as a protocol. For example filename scsi:0, is
      interpreted as a protocol by name "scsi".
      
      This patch allows user to espace colon characters. For example the above
      filename can now be expressed either as 'scsi\:0' or as file:scsi:0
      
      anything following the "file:" tag is interpreted verbatin. However if "file:"
      tag is omitted then any colon characters in the string must be escaped using
      backslash.
      
      Here are couple of examples:
      
      scsi\:0\:abc is a local file scsi:0:abc
      http\://myweb is a local file by name http://myweb
      file:scsi:0:abc is a local file scsi:0:abc
      file:http://myweb is a local file by name http://mywebSigned-off-by: NRam Pai <linuxram@us.ibm.com>
      Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      707c0dbc
  3. 17 6月, 2009 1 次提交
  4. 22 5月, 2009 1 次提交
  5. 15 5月, 2009 1 次提交
  6. 22 4月, 2009 1 次提交
  7. 08 4月, 2009 1 次提交
  8. 06 4月, 2009 1 次提交
  9. 29 3月, 2009 2 次提交
  10. 13 3月, 2009 1 次提交
  11. 12 3月, 2009 2 次提交
  12. 06 3月, 2009 4 次提交
  13. 23 1月, 2009 3 次提交
  14. 05 12月, 2008 1 次提交
    • A
      Use writeback caching by default with qcow2 · 4dc822d7
      aliguori 提交于
      qcow2 writes a cluster reference count on every cluster update.  This causes
      performance to crater when using anything but cache=writeback.  This is most
      noticeable when using savevm.  Right now, qcow2 isn't a reliable format
      regardless of the type of cache your using because metadata is not updated in
      the correct order.  Considering this, I think it's somewhat reasonable to use
      writeback caching by default with qcow2 files.
      
      It at least avoids the massive performance regression for users until we sort
      out the issues in qcow2. 
      Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      
      
      
      git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5879 c046a42c-6fe2-441c-8c8c-71466251a162
      4dc822d7
  15. 26 11月, 2008 1 次提交
  16. 09 11月, 2008 1 次提交
  17. 14 10月, 2008 1 次提交
    • A
      Expand cache= option and use write-through caching by default · 9f7965c7
      aliguori 提交于
      This patch changes the cache= option to accept none, writeback, or writethough
      to control the host page cache behavior.  By default, writethrough caching is
      now used which internally is implemented by using O_DSYNC to open the disk
      images.  When using -snapshot, writeback is used by default since data integrity
      it not at all an issue.
      
      cache=none has the same behavior as cache=off previously.  The later syntax is
      still supported by now deprecated.  I also cleaned up the O_DIRECT
      implementation to avoid many of the #ifdefs.
      Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      
      
      
      git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5485 c046a42c-6fe2-441c-8c8c-71466251a162
      9f7965c7
  18. 06 10月, 2008 1 次提交
  19. 23 9月, 2008 1 次提交
    • A
      Refactor AIO to allow multiple AIO implementations · a76bab49
      aliguori 提交于
      This patch refactors the AIO layer to allow multiple AIO implementations.  It's
      only possible because of the recent signalfd() patch.  
      
      Right now, the AIO infrastructure is pretty specific to the block raw backend.
      For other block devices to implement AIO, the qemu_aio_wait function must
      support registration.  This patch introduces a new function,
      qemu_aio_set_fd_handler, which can be used to register a file descriptor to be
      called back.  qemu_aio_wait() now polls a set of file descriptors registered
      with this function until one becomes readable or writable.
      
      This patch should allow the implementation of alternative AIO backends (via a
      thread pool or linux-aio) and AIO backends in non-traditional block devices
      (like NBD).
      Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      
      
      
      git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5297 c046a42c-6fe2-441c-8c8c-71466251a162
      a76bab49
  20. 15 9月, 2008 1 次提交
    • A
      Use common objects for qemu-img and qemu-nbd · 03ff3ca3
      aliguori 提交于
      Right now, we sprinkle #if defined(QEMU_IMG) && defined(QEMU_NBD) all over the
      code.  It's ugly and causes us to have to build multiple object files for
      linking against qemu and the tools.
      
      This patch introduces a new file, qemu-tool.c which contains enough for
      qemu-img, qemu-nbd, and QEMU to all share the same objects.
      
      This also required getting qemu-nbd to be a bit more Windows friendly.  I also
      changed the Windows block-raw to use normal IO instead of overlapping IO since
      we don't actually do AIO yet on Windows.  I changed the various #if 0's to
       #if WIN32_AIO to make it easier for someone to eventually fix AIO on Windows.
      
      After this patch, there are no longer any #ifdef's related to qemu-img and
      qemu-nbd.
      Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      
      
      
      git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5226 c046a42c-6fe2-441c-8c8c-71466251a162
      03ff3ca3
  21. 10 9月, 2008 1 次提交
    • A
      Use signalfd() to work around signal/select race · baf35cb9
      aliguori 提交于
      This patch introduces signalfd() to work around the signal/select race in
      checking for AIO completions.  For platforms that don't support signalfd(), we
      emulate it with threads.
      
      There was a long discussion about this approach.  I don't believe there are any
      fundamental problems with this approach and I believe eliminating the use of
      signals is a good thing.
      
      I've tested Windows and Linux using Windows and Linux guests.  I've also checked
      for disk IO performance regressions.
      Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
      
      
      
      git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5187 c046a42c-6fe2-441c-8c8c-71466251a162
      baf35cb9
  22. 03 7月, 2008 1 次提交
  23. 06 6月, 2008 1 次提交
  24. 12 3月, 2008 2 次提交
  25. 25 12月, 2007 1 次提交
  26. 24 12月, 2007 1 次提交
  27. 17 12月, 2007 1 次提交
  28. 02 12月, 2007 1 次提交
  29. 18 11月, 2007 1 次提交
  30. 11 11月, 2007 1 次提交