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Bug 596119 - Possible corruption after block request merge
Summary: Possible corruption after block request merge
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: qemu-kvm
Version: 6.0
Hardware: All
OS: Linux
Target Milestone: beta
: ---
Assignee: Kevin Wolf
QA Contact: Virtualization Bugs
Depends On:
TreeView+ depends on / blocked
Reported: 2010-05-26 11:13 UTC by Kevin Wolf
Modified: 2013-01-09 22:37 UTC (History)
5 users (show)

Fixed In Version: qemu-kvm-
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2010-06-02 09:23:04 UTC
Target Upstream Version:

Attachments (Terms of Use)

Description Kevin Wolf 2010-05-26 11:13:45 UTC
Upstream has fixed two corruption bugs in multiwrite recently that need to backported. The upstream report was about crashes (on guest side) when trying to create a file system on images > 1 TB with virtio-blk.

Comment 5 juzhang 2010-06-02 09:21:51 UTC
Reproduced on qemu-kvm-
{"timestamp": {"seconds": 1275470571, "microseconds": 452025}, "event": "BLOCK_IO_ERROR", "data": {"device": "virtio1", "operation": "write", "action": "report"}}

Verified on qemu-kvm-

1. create 1.2T qcow2 img
qemu-img create -f "qcow2" 1_2T.qcow2 1.2T
2. boot guest with 1_2T.qcow2 
/usr/libexec/qemu-kvm  -no-hpet -usbdevice tablet -rtc-td-hack -m 2G -smp 2 -drive file=/root/zhangjunyi/RHEL-Server-5.5-64-virtio.qcow2,if=virtio,boot=on,cache=none,werror=report,rerror=report -drive file=/root/zhangjunyi/1_2T.qcow2,if=virtio,cache=none,werror=report,rerror=report -net nic,vlan=0,macaddr=22:11:22:45:66:22,model=virtio -net tap,vlan=0,script=/etc/qemu-ifup -uuid `uuidgen` -cpu qemu64,+sse2 -balloon none -boot c -monitor stdio -vnc :10 -qmp tcp:0:4444,server,nowait
3. In guest
fdisk /dev/vdb
mkfs.ext3 /dev/vdb1

No error in guest dmesg.

Comment 6 juzhang 2010-06-02 09:23:04 UTC
according to comment5,close this issue.

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