From: Max Reitz <mreitz@redhat.com>
To: Ekaterina Tumanova <tumanova@linux.vnet.ibm.com>,
Public KVM Mailing List <qemu-devel@nongnu.org>
Cc: kwolf@redhat.com, thuth@linux.vnet.ibm.com,
borntraeger@de.ibm.com, armbru@redhat.com,
mihajlov@linux.vnet.ibm.com, dahi@linux.vnet.ibm.com,
stefanha@redhat.com, cornelia.huck@de.ibm.com
Subject: Re: [Qemu-devel] [PATCH v7 5/5] BlockConf: Call backend functions to detect geometry and blocksizes
Date: Fri, 27 Feb 2015 11:22:47 -0500 [thread overview]
Message-ID: <54F099D7.7010206@redhat.com> (raw)
In-Reply-To: <1424087278-49393-6-git-send-email-tumanova@linux.vnet.ibm.com>
On 2015-02-16 at 06:47, Ekaterina Tumanova wrote:
> geometry: hd_geometry_guess function autodetects the drive geometry.
> This patch adds a block backend call, that probes the backing device
> geometry. If the inner driver method is implemented and succeeds
> (currently only for DASDs), the blkconf_geometry will pass-through
> the backing device geometry. Otherwise will fallback to old logic.
>
> blocksize: This patch initializes blocksize properties to 0.
> In order to set the property a blkconf_blocksizes was introduced.
> If user didn't set physical or logical blocksize, it will
> retrieve its value from a driver (only succeeds for DASD), otherwise
> it will set default 512 value.
>
> The blkconf_blocksizes call was added to all users of BlkConf.
>
> Signed-off-by: Ekaterina Tumanova <tumanova@linux.vnet.ibm.com>
> Reviewed-by: Markus Armbruster <armbru@redhat.com>
> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
> ---
> hw/block/block.c | 24 ++++++++++++++++++++++++
> hw/block/hd-geometry.c | 10 +++++++++-
> hw/block/nvme.c | 1 +
> hw/block/virtio-blk.c | 1 +
> hw/core/qdev-properties.c | 3 ++-
> hw/ide/qdev.c | 1 +
> hw/scsi/scsi-disk.c | 2 ++
> hw/usb/dev-storage.c | 1 +
> include/hw/block/block.h | 5 +++--
> include/hw/qdev-properties.h | 4 ++--
> 10 files changed, 46 insertions(+), 6 deletions(-)
This patch makes qemu segfault if the drive property is not set for a
scsi-hd device:
$ x86_64-softmmu/qemu-system-x86_64 -device virtio-scsi-pci -device scsi-hd
[1] 13368 segmentation fault (core dumped)
x86_64-softmmu/qemu-system-x86_64 -device virtio-scsi-pci -device scsi-hd
(gdb) bt
#0 0x00007f0a77620f50 in blk_probe_blocksizes (blk=0x0,
bsz=0x7fffd989f110) at block/block-backend.c:898
#1 0x00007f0a774eb943 in blkconf_blocksizes
(conf=conf@entry=0x7f0a7b1e71c0) at hw/block/block.c:34
#2 0x00007f0a7755e5a8 in scsi_hd_realize (dev=0x7f0a7b1e7130,
errp=0x7fffd989f150) at hw/scsi/scsi-disk.c:2294
#3 0x00007f0a77564671 in scsi_qdev_realize (errp=0x7fffd989f150,
s=0x7f0a7b1e7130) at hw/scsi/scsi-bus.c:50
#4 0x00007f0a77564671 in scsi_qdev_realize (qdev=<optimized out>,
errp=0x7fffd989f190) at hw/scsi/scsi-bus.c:197
#5 0x00007f0a77502b71 in device_set_realized (obj=0x7f0a7b1e7130,
value=<optimized out>, errp=0x7fffd989f2c8) at hw/core/qdev.c:1047
#6 0x00007f0a775b1e0e in property_set_bool (obj=0x7f0a7b1e7130,
v=<optimized out>, opaque=0x7f0a7b1e73e0, name=<optimized out>,
errp=0x7fffd989f2c8) at qom/object.c:1514
#7 0x00007f0a775b4707 in object_property_set_qobject
(obj=0x7f0a7b1e7130, value=<optimized out>, name=0x7f0a7769e3cd
"realized", errp=0x7fffd989f2c8) at qom/qom-qobject.c:24
#8 0x00007f0a775b32a0 in object_property_set_bool
(obj=obj@entry=0x7f0a7b1e7130, value=value@entry=true,
name=name@entry=0x7f0a7769e3cd "realized", errp=errp@entry=0x7fffd989f2c8)
at qom/object.c:905
#9 0x00007f0a774a8ca5 in qdev_device_add (opts=0x7f0a799fa3f0) at
qdev-monitor.c:574
#10 0x00007f0a774b1df9 in device_init_func (opts=<optimized out>,
opaque=<optimized out>) at qemu/vl.c:2127
#11 0x00007f0a7766803b in qemu_opts_foreach (list=<optimized out>,
func=0x7f0a774b1df0 <device_init_func>, opaque=0x0,
abort_on_failure=<optimized out>) at util/qemu-option.c:1057
#12 0x00007f0a773b96ec in main (argc=<optimized out>, argv=<optimized
out>, envp=<optimized out>) at vl.c:4239
Before this patch:
$ x86_64-softmmu/qemu-system-x86_64 -device virtio-scsi-pci -device scsi-hd
qemu-system-x86_64: -device scsi-hd: drive property not set
qemu-system-x86_64: -device scsi-hd: Device 'scsi-hd' could not be
initialized
Max
next prev parent reply other threads:[~2015-02-27 16:23 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-16 11:47 [Qemu-devel] [PATCH v7 0/5] Geometry and blocksize detection for backing devices Ekaterina Tumanova
2015-02-16 11:47 ` [Qemu-devel] [PATCH v7 1/5] block: add bdrv functions for geometry and blocksize Ekaterina Tumanova
2015-02-16 11:47 ` [Qemu-devel] [PATCH v7 2/5] raw-posix: Factor block size detection out of raw_probe_alignment() Ekaterina Tumanova
2015-02-16 11:47 ` [Qemu-devel] [PATCH v7 3/5] block: Add driver methods to probe blocksizes and geometry Ekaterina Tumanova
2015-02-16 11:47 ` [Qemu-devel] [PATCH v7 4/5] block-backend: Add wrappers for blocksizes and geometry probing Ekaterina Tumanova
2015-02-16 11:47 ` [Qemu-devel] [PATCH v7 5/5] BlockConf: Call backend functions to detect geometry and blocksizes Ekaterina Tumanova
2015-02-27 16:22 ` Max Reitz [this message]
2015-02-27 18:26 ` [Qemu-devel] [PATCH 0/1] Ekaterina Tumanova
2015-02-27 18:26 ` [Qemu-devel] [PATCH 1/1] scsi-hd: fix property unset case Ekaterina Tumanova
2015-02-27 18:29 ` Max Reitz
2015-02-27 18:58 ` Stefan Hajnoczi
2015-03-02 8:46 ` Markus Armbruster
2015-03-02 9:07 ` Ekaterina Tumanova
2015-03-02 12:04 ` Markus Armbruster
2015-03-02 9:28 ` [Qemu-devel] [PATCH 0/1] Kevin Wolf
2015-03-03 8:15 ` [Qemu-devel] [PATCH] Add testcase for scsi-hd devices without drive property Christian Borntraeger
2015-03-03 14:17 ` Christian Borntraeger
2015-03-03 14:31 ` Max Reitz
2015-02-24 9:13 ` [Qemu-devel] [PATCH v7 0/5] Geometry and blocksize detection for backing devices Christian Borntraeger
2015-02-24 10:44 ` Stefan Hajnoczi
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