qemu-system-x86_64: Initialization of device ide-hd failed: Failed to get

You start a qemu like this and another VM already started with the same .iso

qemu-system-x86_64 -enable-kvm -m 4096 -cdrom some.iso

But you get this error:

qemu-system-x86_64: Initialization of device ide-hd failed: Failed to get "write" lock
Is another process using the image [some.iso]?

It's odd because the -cdrom by default is read-only and qemu should not want or care about getting write lock on the .iso.

What causes this lock issue with an iso?

qemu-system-x86_64 -enable-kvm -m 4096 some.iso

Note that the .iso above was used, it will work and boot but it was passed to QEMU the same way as a normal disk image, so therefore it puts a write lock on it, even though it doesn't need to be.

Solution Use The ISO as a -cdrom

Make sure that you use -cdrom and then you can start unlimited amounts of VMs using that image.

qemu-system-x86_64 -enable-kvm -m 4096 -cdrom some.iso


qemu, _, initialization, ide, hd, iso, solutionyou, vm, enable, kvm, cdrom, quot, default,

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