Re: [Qemu-devel] [PATCH 0/2] Fix scsi-generic breakage in upstream qemu-kvm.git

2010-05-28 Thread Kevin Wolf
Am 27.05.2010 17:56, schrieb Nicholas A. Bellinger:
 On Thu, 2010-05-20 at 15:18 +0200, Kevin Wolf wrote:
 Am 17.05.2010 18:45, schrieb Nicholas A. Bellinger:
 From: Nicholas Bellinger n...@linux-iscsi.org

 Greetings,

 Attached are the updated patches following hch's comments to fix 
 scsi-generic
 device breakage with find_image_format() and refresh_total_sectors().

 These are being resent as the last attachments where in MBOX format from 
 git-format-patch.

 Signed-off-by: Nicholas A. Bellinger n...@linux-iscsi.org

 Thanks, applied all to the block branch, even though I forgot to reply here.

 Kevin
 
 Hi Kevin,
 
 Thanks for accepting the series.  There is one more piece of breakage
 that Chris Krumme found in block.c:find_image_format() in the original
 patch.  Please apply the patch to add the missing bdrv_delete() for the
 SG_IO case below.
 
 Thanks for pointing this out Chris!

Right, thanks for the fix.  I've applied it to the block branch.

Kevin
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Re: [Qemu-devel] [PATCH 0/2] Fix scsi-generic breakage in upstream qemu-kvm.git

2010-05-27 Thread Nicholas A. Bellinger
On Thu, 2010-05-20 at 15:18 +0200, Kevin Wolf wrote:
 Am 17.05.2010 18:45, schrieb Nicholas A. Bellinger:
  From: Nicholas Bellinger n...@linux-iscsi.org
  
  Greetings,
  
  Attached are the updated patches following hch's comments to fix 
  scsi-generic
  device breakage with find_image_format() and refresh_total_sectors().
  
  These are being resent as the last attachments where in MBOX format from 
  git-format-patch.
  
  Signed-off-by: Nicholas A. Bellinger n...@linux-iscsi.org
 
 Thanks, applied all to the block branch, even though I forgot to reply here.
 
 Kevin

Hi Kevin,

Thanks for accepting the series.  There is one more piece of breakage
that Chris Krumme found in block.c:find_image_format() in the original
patch.  Please apply the patch to add the missing bdrv_delete() for the
SG_IO case below.

Thanks for pointing this out Chris!

Best,

--nab

[PATCH] [block]: Add missing bdrv_delete() for SG_IO BlockDriver in 
find_image_format()

This patch adds a missing bdrv_delete() call in find_image_format() so that a
SG_IO BlockDriver properly releases the temporary BlockDriverState *bs created
from bdrv_file_open()

Signed-off-by: Nicholas A. Bellinger n...@linux-iscsi.org
Reported-by: Chris Krumme chris.kru...@windriver.com
---
 block.c |4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/block.c b/block.c
index 7a379dc..88dbc00 100644
--- a/block.c
+++ b/block.c
@@ -334,8 +334,10 @@ static BlockDriver *find_image_format(const char *filename)
 return NULL;

 /* Return the raw BlockDriver * to scsi-generic devices */
-if (bs-sg)
+if (bs-sg) {
+bdrv_delete(bs); 
 return bdrv_find_format(raw);
+}

 ret = bdrv_pread(bs, 0, buf, sizeof(buf));
 bdrv_delete(bs);
-- 
1.5.6.5




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Re: [Qemu-devel] [PATCH 0/2] Fix scsi-generic breakage in upstream qemu-kvm.git

2010-05-20 Thread Kevin Wolf
Am 17.05.2010 18:45, schrieb Nicholas A. Bellinger:
 From: Nicholas Bellinger n...@linux-iscsi.org
 
 Greetings,
 
 Attached are the updated patches following hch's comments to fix scsi-generic
 device breakage with find_image_format() and refresh_total_sectors().
 
 These are being resent as the last attachments where in MBOX format from 
 git-format-patch.
 
 Signed-off-by: Nicholas A. Bellinger n...@linux-iscsi.org

Thanks, applied all to the block branch, even though I forgot to reply here.

Kevin
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[PATCH 0/2] Fix scsi-generic breakage in upstream qemu-kvm.git

2010-05-16 Thread Nicholas A. Bellinger
From: Nicholas Bellinger n...@linux-iscsi.org

Greetings,

Attached are the updated patches following hch's comments to fix scsi-generic
device breakage with find_image_format() and refresh_total_sectors().

These are being resent as the last attachments where in MBOX format from 
git-format-patch.

Signed-off-by: Nicholas A. Bellinger n...@linux-iscsi.org

Nicholas Bellinger (2):
  [block]: Make find_image_format() return 'raw' BlockDriver for SG_IO
devices
  [block]: Add SG_IO device check in refresh_total_sectors()

 block.c |9 +
 1 files changed, 9 insertions(+), 0 deletions(-)

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[PATCH 0/2] Fix scsi-generic breakage in upstream qemu-kvm.git

2010-05-14 Thread Nicholas A. Bellinger
From: Nicholas Bellinger n...@linux-iscsi.org

Greetings Kevin and hch,

After pulling from upstream qemu-kvm.git/master into the megasas qemu-kvm.git 
tree,
I ran into some breakage with scsi-generic devices returning an -ESPIPE 
exception in
bdrv_open() - find_image_format() - bdrv_read(), and then again from
brdv_open_common() - refresh_total_sectors() - raw_getlength() - lseek().

This breakage appears to be fallout from:

commit b6ce07aa83bdee3cfd2610f270a0ce304e78df95
Author: Kevin Wolf kw...@redhat.com
Date:   Mon Apr 12 16:37:13 2010 +0200

block: Split bdrv_open

bdrv_open contains quite some code that is only useful for opening images 
(as
opposed to opening files by a protocol), for example snapshots.

This patch splits the code so that we have bdrv_open_file() for files (uses
protocols), bdrv_open() for images (uses format drivers) and 
bdrv_open_common()
for the code common for opening both images and files.

commit 66f82ceed6781261c09e65fb440ca76842fd0500
Author: Kevin Wolf kw...@redhat.com
Date:   Wed Apr 14 14:17:38 2010 +0200

block: Open the underlying image file in generic code

Format drivers shouldn't need to bother with things like file names, but 
rather
just get an open BlockDriverState for the underlying protocol. This patch
introduces this behaviour for bdrv_open implementation. For protocols which
need to access the filename to open their file/device/connection/... a new
callback bdrv_file_open is introduced which doesn't get an underlying file
opened.


The following are two patches that where required in order to get 
hw/scsi-generic.c
working with the latest upstream qemu-kvm.git/master.  They appear to be 
straight
forward enough, and have been lightly tested with megasas+SG_IO on a 
v2.6.34-rc7 KVM
host.

Please have a look and apply!

Signed-off-by: Nicholas A. Bellinger n...@linux-iscsi.org

Nicholas Bellinger (2):
  [block]: Fix scsi-generic breakage in find_image_format()
  [block]: Skip refresh_total_sectors() for scsi-generic devices

 block.c |   20 
 1 files changed, 16 insertions(+), 4 deletions(-)

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