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Re: [Qemu-devel] Latest GIT doesn't work with long device names
From: |
Kevin Wolf |
Subject: |
Re: [Qemu-devel] Latest GIT doesn't work with long device names |
Date: |
Tue, 01 Jun 2010 13:12:35 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100430 Fedora/3.0.4-2.fc12 Thunderbird/3.0.4 |
Am 01.06.2010 12:59, schrieb Peter Lieven:
> Hi,
>
> I just compiled latest git to work on Bug #585113 .
>
> Unfortunately, I can't start the the VMs with the device mappings
> generated by our multipath
> setup.
>
> cmdline:
> /usr/bin/qemu-kvm-devel -net none -drive
> file=/dev/mapper/iqn.2001-05.com.equallogic:0-8a0906-88961b105-19f000e7e7d4beaa-test1,if=scsi,boot=on,cache=none,aio=native
>
> -drive
> file=/dev/mapper/iqn.2001-05.com.equallogic:0-8a0906-89661b105-458000e7e804beaa-test2,if=scsi,boot=off,cache=none,aio=native
>
> -drive
> file=/dev/mapper/iqn.2001-05.com.equallogic:0-8a0906-8a361b105-928000e7e834beaa-test3,if=scsi,boot=off,cache=none,aio=native
>
> -drive
> file=/dev/mapper/iqn.2001-05.com.equallogic:0-8a0906-8af61b105-d10000e7e864beaa-test4,if=scsi,boot=off,cache=none,aio=native
>
> -m 1024 -cpu qemu64,model_id='Intel(R) Xeon(R) CPU E5520 @
> 2.27GHz' -monitor tcp:0:4005,server,nowait -vnc :5 -name 'ide-test'
> -boot order=dc,menu=on -cdrom
> /home/kvm/cdrom//root/KNOPPIX_V6.2.1CD-2010-01-31-DE.iso -k de -pidfile
> /var/run/qemu/vm-153.pid -mem-path /hugepages -mem-prealloc -rtc
> base=utc,clock=host -usb -usbdevice tablet
>
> error:
> qemu: could not open disk image
> /dev/mapper/iqn.2001-05.com.equallogic:0-8a0906-88961b105-19f000e7e7d4beaa-test1:
>
> Argument list too long
Might be a problem with the colon in your file name (the error message
is nonsense - I'll send a patch). It takes everything before the first
colon as a protocol name. To work around this you can specify the
protocol explicitly, as in -drive file=host_device:/dev/mapper/...
Kevin