[Qemu-devel] Latest GIT doesn't work with long device names

qemu-devel.nongnu.org archive mirror
 help / color / mirror / Atom feed

* [Qemu-devel] Latest GIT doesn't work with long device names
@ 2010-06-01 10:59 Peter Lieven
  2010-06-01 11:12 ` Kevin Wolf
  0 siblings, 1 reply; 5+ messages in thread
From: Peter Lieven @ 2010-06-01 10:59 UTC (permalink / raw)
  To: qemu-devel, kvm

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

Can somebody help here please. I justed started digging into the code 
and found that filename is a character array of 1024 Byte. So the 
problem must be somewhere
else...

BR,
Peter

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [Qemu-devel] Latest GIT doesn't work with long device names
  2010-06-01 10:59 [Qemu-devel] Latest GIT doesn't work with long device names Peter Lieven
@ 2010-06-01 11:12 ` Kevin Wolf
  2010-06-01 11:24   ` Peter Lieven
                     ` (2 more replies)
  0 siblings, 3 replies; 5+ messages in thread
From: Kevin Wolf @ 2010-06-01 11:12 UTC (permalink / raw)
  To: Peter Lieven; +Cc: qemu-devel, kvm

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

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [Qemu-devel] Latest GIT doesn't work with long device names
  2010-06-01 11:12 ` Kevin Wolf
@ 2010-06-01 11:24   ` Peter Lieven
  2010-06-01 11:52   ` Peter Lieven
  2010-06-01 12:01   ` Peter Lieven
  2 siblings, 0 replies; 5+ messages in thread
From: Peter Lieven @ 2010-06-01 11:24 UTC (permalink / raw)
  To: Kevin Wolf; +Cc: qemu-devel, kvm

Kevin Wolf wrote:
> 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/...
>   

mmh, doesn't work.

qemu: could not open disk image 
host_device:/dev/mapper/iqn.2001-05.com.equallogic:0-8a0906-88961b105-19f000e7e7d4beaa-test1: 
No such file or directory


> Kevin
>
>
>   


-- 
Mit freundlichen Grüßen/Kind Regards

Peter Lieven

..........................................................................................................

   KAMP Netzwerkdienste GmbH
   Vestische Str. 89-91 | 46117 Oberhausen
   Tel: +49 (0) 208.89 402-50 | Fax: +49 (0) 208.89 402-40
   mailto:pl@kamp.de | http://www.kamp.de

   Geschäftsführer: Heiner Lante | Michael Lante
   Amtsgericht Duisburg | HRB Nr. 12154
   USt-Id-Nr.: DE 120607556

.........................................................................................................
 

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [Qemu-devel] Latest GIT doesn't work with long device names
  2010-06-01 11:12 ` Kevin Wolf
  2010-06-01 11:24   ` Peter Lieven
@ 2010-06-01 11:52   ` Peter Lieven
  2010-06-01 12:01   ` Peter Lieven
  2 siblings, 0 replies; 5+ messages in thread
From: Peter Lieven @ 2010-06-01 11:52 UTC (permalink / raw)
  To: Kevin Wolf; +Cc: qemu-devel, kvm

Kevin Wolf wrote:
> 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/...
>   
applied your patch, the actual error is (e.g.):
qemu: could not open disk image 
/dev/mapper/iqn.2001-05.com.equallogic:0-8a0906-e1861b105-4cb000e7e8c4bf3b-opensuse-11-2-i586: 
No such file or directory

while the image is there:

root@TEST:/home/kvm/src# ls -la 
/dev/mapper/iqn.2001-05.com.equallogic\:0-8a0906-e1861b105-4cb000e7e8c4bf3b-opensuse-11-2-i586 

brw-rw---- 1 root disk 254, 0 2010-06-01 13:48 
/dev/mapper/iqn.2001-05.com.equallogic:0-8a0906-e1861b105-4cb000e7e8c4bf3b-opensuse-11-2-i586

peter
> Kevin
>
>
>   

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [Qemu-devel] Latest GIT doesn't work with long device names
  2010-06-01 11:12 ` Kevin Wolf
  2010-06-01 11:24   ` Peter Lieven
  2010-06-01 11:52   ` Peter Lieven
@ 2010-06-01 12:01   ` Peter Lieven
  2 siblings, 0 replies; 5+ messages in thread
From: Peter Lieven @ 2010-06-01 12:01 UTC (permalink / raw)
  To: Kevin Wolf; +Cc: qemu-devel, kvm

Kevin Wolf wrote:
> 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/...
>   
-drive format=host_device,file=/dev/mapper/...

solves the problem
> Kevin
>
>
>   


-- 
Mit freundlichen Grüßen/Kind Regards

Peter Lieven

..........................................................................................................

   KAMP Netzwerkdienste GmbH
   Vestische Str. 89-91 | 46117 Oberhausen
   Tel: +49 (0) 208.89 402-50 | Fax: +49 (0) 208.89 402-40
   mailto:pl@kamp.de | http://www.kamp.de

   Geschäftsführer: Heiner Lante | Michael Lante
   Amtsgericht Duisburg | HRB Nr. 12154
   USt-Id-Nr.: DE 120607556

......................................................................................................... 

^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2010-06-01 12:01 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2010-06-01 10:59 [Qemu-devel] Latest GIT doesn't work with long device names Peter Lieven
2010-06-01 11:12 ` Kevin Wolf
2010-06-01 11:24   ` Peter Lieven
2010-06-01 11:52   ` Peter Lieven
2010-06-01 12:01   ` Peter Lieven

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).