QEMU: How to convert -net flags into -device & -netdev Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern) 2019 Community Moderator Election Results Why I closed the “Why is Kali so hard” questionqemu no boot device found!How can I simulate USB storage device connection with qemu?How to convert the qemu parameters for an osx guest for libvirtdtunctl complains that device or resource is busy if used in /etc/qemu-ifup scriptMaking /dev/net/tun available to qemu?Why can't the kernel run init?Dive into qemu source code to trace io requestsqemu-img convert burning CPU for nothingHow to save the machine state of a QEMU VM started using qemu-system-x86_64?Qemu - Emulate own system to test kernel modules

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QEMU: How to convert -net flags into -device & -netdev



Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)
2019 Community Moderator Election Results
Why I closed the “Why is Kali so hard” questionqemu no boot device found!How can I simulate USB storage device connection with qemu?How to convert the qemu parameters for an osx guest for libvirtdtunctl complains that device or resource is busy if used in /etc/qemu-ifup scriptMaking /dev/net/tun available to qemu?Why can't the kernel run init?Dive into qemu source code to trace io requestsqemu-img convert burning CPU for nothingHow to save the machine state of a QEMU VM started using qemu-system-x86_64?Qemu - Emulate own system to test kernel modules



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1















I'm trying to emulate Raspberry Pi via QEMU and the following works for me:



qemu-system-arm 
 -append "root=/dev/sda2 panic=1 rootfstype=ext4 rw" 
 -boot c 
 -cpu arm1176 
 -drive "file=2019-04-08-raspbian-stretch-lite.img,if=scsi,cache=none,discard=ignore,format=raw" 
 -kernel ./kernel-qemu-4.4.34-jessie 
 -m 256M 
 -machine type=versatilepb,accel=tcg 
 -name packer-qemu 
 -no-reboot 
 -vnc 127.0.0.1:4 
 -net nic 
 -net user,id=user.0,hostfwd=tcp::5555-:22


and I'm able to both VNC in via 5904 and SSH in via 5555 (after starting SSHd via VNC). In other words network seems to be set up correctly.



As I discovered -net option has been deprecated in favour of -device & -netdev, so I'd like to translate the above two last flags into "new QEMU".



It appears that the new -device flag forces me to pick a driver, which isn't the case with -net. I like explicitness, but how do I know what is the default/implicit driver?



Port forwarding in the following example doesn't seem to work anymore (I can't SSH in; connection times out):



qemu-system-arm 
 -append "root=/dev/sda2 panic=1 rootfstype=ext4 rw" 
 -boot c 
 -cpu arm1176 
 -drive "file=2019-04-08-raspbian-stretch-lite.img,if=scsi,cache=none,discard=ignore,format=raw" 
 -kernel ./kernel-qemu-4.4.34-jessie 
 -m 256M 
 -machine type=versatilepb,accel=tcg 
 -name packer-qemu 
 -no-reboot 
 -vnc 127.0.0.1:4 
 -device e1000,netdev=user.0 
 -netdev user,id=user.0,hostfwd=tcp::5555-:22


Am I just using wrong driver?



QEMU 3.1.0 (installed from Homebrew)



(Host) MacOS 10.14.4






osx raspberry-pi qemu







share|improve this question







New contributor




Radek Simko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.




















  • I managed to make it work with -nic user,id=user.0,hostfwd=tcp::5555-:22 (which seems to be a new flag too) but I'm still very confused about differences between all these flags and I'm still curious whether they are replaceable with each other.

    – Radek Simko
    10 hours ago











  • qemu.org/2018/05/31/nic-parameter provides some background with some hints that these flags may not actually be equivalent. Should I turn this into an answer?

    – Radek Simko
    10 hours ago











  • you should, if it works for you. as a completion, you can check the default network device with info network in the qemu monitor (for your machine (versatilepb) it's probably smc91c111.

    – mosvy
    9 hours ago


















1















I'm trying to emulate Raspberry Pi via QEMU and the following works for me:



qemu-system-arm 
 -append "root=/dev/sda2 panic=1 rootfstype=ext4 rw" 
 -boot c 
 -cpu arm1176 
 -drive "file=2019-04-08-raspbian-stretch-lite.img,if=scsi,cache=none,discard=ignore,format=raw" 
 -kernel ./kernel-qemu-4.4.34-jessie 
 -m 256M 
 -machine type=versatilepb,accel=tcg 
 -name packer-qemu 
 -no-reboot 
 -vnc 127.0.0.1:4 
 -net nic 
 -net user,id=user.0,hostfwd=tcp::5555-:22


and I'm able to both VNC in via 5904 and SSH in via 5555 (after starting SSHd via VNC). In other words network seems to be set up correctly.



As I discovered -net option has been deprecated in favour of -device & -netdev, so I'd like to translate the above two last flags into "new QEMU".



It appears that the new -device flag forces me to pick a driver, which isn't the case with -net. I like explicitness, but how do I know what is the default/implicit driver?



Port forwarding in the following example doesn't seem to work anymore (I can't SSH in; connection times out):



qemu-system-arm 
 -append "root=/dev/sda2 panic=1 rootfstype=ext4 rw" 
 -boot c 
 -cpu arm1176 
 -drive "file=2019-04-08-raspbian-stretch-lite.img,if=scsi,cache=none,discard=ignore,format=raw" 
 -kernel ./kernel-qemu-4.4.34-jessie 
 -m 256M 
 -machine type=versatilepb,accel=tcg 
 -name packer-qemu 
 -no-reboot 
 -vnc 127.0.0.1:4 
 -device e1000,netdev=user.0 
 -netdev user,id=user.0,hostfwd=tcp::5555-:22


Am I just using wrong driver?



QEMU 3.1.0 (installed from Homebrew)



(Host) MacOS 10.14.4






osx raspberry-pi qemu







share|improve this question







New contributor




Radek Simko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.




















  • I managed to make it work with -nic user,id=user.0,hostfwd=tcp::5555-:22 (which seems to be a new flag too) but I'm still very confused about differences between all these flags and I'm still curious whether they are replaceable with each other.

    – Radek Simko
    10 hours ago











  • qemu.org/2018/05/31/nic-parameter provides some background with some hints that these flags may not actually be equivalent. Should I turn this into an answer?

    – Radek Simko
    10 hours ago











  • you should, if it works for you. as a completion, you can check the default network device with info network in the qemu monitor (for your machine (versatilepb) it's probably smc91c111.

    – mosvy
    9 hours ago














1












1








1








I'm trying to emulate Raspberry Pi via QEMU and the following works for me:



qemu-system-arm 
 -append "root=/dev/sda2 panic=1 rootfstype=ext4 rw" 
 -boot c 
 -cpu arm1176 
 -drive "file=2019-04-08-raspbian-stretch-lite.img,if=scsi,cache=none,discard=ignore,format=raw" 
 -kernel ./kernel-qemu-4.4.34-jessie 
 -m 256M 
 -machine type=versatilepb,accel=tcg 
 -name packer-qemu 
 -no-reboot 
 -vnc 127.0.0.1:4 
 -net nic 
 -net user,id=user.0,hostfwd=tcp::5555-:22


and I'm able to both VNC in via 5904 and SSH in via 5555 (after starting SSHd via VNC). In other words network seems to be set up correctly.



As I discovered -net option has been deprecated in favour of -device & -netdev, so I'd like to translate the above two last flags into "new QEMU".



It appears that the new -device flag forces me to pick a driver, which isn't the case with -net. I like explicitness, but how do I know what is the default/implicit driver?



Port forwarding in the following example doesn't seem to work anymore (I can't SSH in; connection times out):



qemu-system-arm 
 -append "root=/dev/sda2 panic=1 rootfstype=ext4 rw" 
 -boot c 
 -cpu arm1176 
 -drive "file=2019-04-08-raspbian-stretch-lite.img,if=scsi,cache=none,discard=ignore,format=raw" 
 -kernel ./kernel-qemu-4.4.34-jessie 
 -m 256M 
 -machine type=versatilepb,accel=tcg 
 -name packer-qemu 
 -no-reboot 
 -vnc 127.0.0.1:4 
 -device e1000,netdev=user.0 
 -netdev user,id=user.0,hostfwd=tcp::5555-:22


Am I just using wrong driver?



QEMU 3.1.0 (installed from Homebrew)



(Host) MacOS 10.14.4






osx raspberry-pi qemu







share|improve this question







New contributor




Radek Simko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












I'm trying to emulate Raspberry Pi via QEMU and the following works for me:



qemu-system-arm 
 -append "root=/dev/sda2 panic=1 rootfstype=ext4 rw" 
 -boot c 
 -cpu arm1176 
 -drive "file=2019-04-08-raspbian-stretch-lite.img,if=scsi,cache=none,discard=ignore,format=raw" 
 -kernel ./kernel-qemu-4.4.34-jessie 
 -m 256M 
 -machine type=versatilepb,accel=tcg 
 -name packer-qemu 
 -no-reboot 
 -vnc 127.0.0.1:4 
 -net nic 
 -net user,id=user.0,hostfwd=tcp::5555-:22


and I'm able to both VNC in via 5904 and SSH in via 5555 (after starting SSHd via VNC). In other words network seems to be set up correctly.



As I discovered -net option has been deprecated in favour of -device & -netdev, so I'd like to translate the above two last flags into "new QEMU".



It appears that the new -device flag forces me to pick a driver, which isn't the case with -net. I like explicitness, but how do I know what is the default/implicit driver?



Port forwarding in the following example doesn't seem to work anymore (I can't SSH in; connection times out):



qemu-system-arm 
 -append "root=/dev/sda2 panic=1 rootfstype=ext4 rw" 
 -boot c 
 -cpu arm1176 
 -drive "file=2019-04-08-raspbian-stretch-lite.img,if=scsi,cache=none,discard=ignore,format=raw" 
 -kernel ./kernel-qemu-4.4.34-jessie 
 -m 256M 
 -machine type=versatilepb,accel=tcg 
 -name packer-qemu 
 -no-reboot 
 -vnc 127.0.0.1:4 
 -device e1000,netdev=user.0 
 -netdev user,id=user.0,hostfwd=tcp::5555-:22


Am I just using wrong driver?



QEMU 3.1.0 (installed from Homebrew)



(Host) MacOS 10.14.4






osx raspberry-pi qemu




osx raspberry-pi qemu






share|improve this question







New contributor




Radek Simko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question







New contributor




Radek Simko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question






New contributor




Radek Simko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









asked 11 hours ago









Radek SimkoRadek Simko

1063




1063




New contributor




Radek Simko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





New contributor





Radek Simko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






Radek Simko is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












  • I managed to make it work with -nic user,id=user.0,hostfwd=tcp::5555-:22 (which seems to be a new flag too) but I'm still very confused about differences between all these flags and I'm still curious whether they are replaceable with each other.

    – Radek Simko
    10 hours ago











  • qemu.org/2018/05/31/nic-parameter provides some background with some hints that these flags may not actually be equivalent. Should I turn this into an answer?

    – Radek Simko
    10 hours ago











  • you should, if it works for you. as a completion, you can check the default network device with info network in the qemu monitor (for your machine (versatilepb) it's probably smc91c111.

    – mosvy
    9 hours ago


















  • I managed to make it work with -nic user,id=user.0,hostfwd=tcp::5555-:22 (which seems to be a new flag too) but I'm still very confused about differences between all these flags and I'm still curious whether they are replaceable with each other.

    – Radek Simko
    10 hours ago











  • qemu.org/2018/05/31/nic-parameter provides some background with some hints that these flags may not actually be equivalent. Should I turn this into an answer?

    – Radek Simko
    10 hours ago











  • you should, if it works for you. as a completion, you can check the default network device with info network in the qemu monitor (for your machine (versatilepb) it's probably smc91c111.

    – mosvy
    9 hours ago

















I managed to make it work with -nic user,id=user.0,hostfwd=tcp::5555-:22 (which seems to be a new flag too) but I'm still very confused about differences between all these flags and I'm still curious whether they are replaceable with each other.

– Radek Simko
10 hours ago





I managed to make it work with -nic user,id=user.0,hostfwd=tcp::5555-:22 (which seems to be a new flag too) but I'm still very confused about differences between all these flags and I'm still curious whether they are replaceable with each other.

– Radek Simko
10 hours ago













qemu.org/2018/05/31/nic-parameter provides some background with some hints that these flags may not actually be equivalent. Should I turn this into an answer?

– Radek Simko
10 hours ago





qemu.org/2018/05/31/nic-parameter provides some background with some hints that these flags may not actually be equivalent. Should I turn this into an answer?

– Radek Simko
10 hours ago













you should, if it works for you. as a completion, you can check the default network device with info network in the qemu monitor (for your machine (versatilepb) it's probably smc91c111.

– mosvy
9 hours ago






you should, if it works for you. as a completion, you can check the default network device with info network in the qemu monitor (for your machine (versatilepb) it's probably smc91c111.

– mosvy
9 hours ago











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