./cloud-hypervisor -vvv --log-file 1.log \
 --vsock cid=3,id=_vsock0,socket=v1.sock \
 --api-socket api1.sock \
 --cpus boot=2,features=amx \
 --memory size=8G \
 --kernel vmlinux \
 --serial tty,file=s.log  \
 --console off \
 --cmdline "root=/dev/vda console=ttyS0 rw highres=off clocksource=kvm-clock quiet earlyprintk=ttyS0" \
 --disk path=rootfs.raw

./ch-remote --api-socket api1.sock snapshot file:///xxx/snapshot

[2025-12-03T09:19:41Z ERROR cloud_hypervisor] Fatal error: HttpApiClient(ServerResponse(InternalServerError, Some("[\"Error from API\",\"The VM could not be snapshotted\",\"Cannot snapshot VM\",\"Failed to snapshot migratable component\",\"Could not get vCPU state GetXsaveState(Invalid argument (os error 22))\"]")))
Error: ch-remote exited with the following chain of errors:
  0: http client error
  1: Server responded with InternalServerError
  2: Error from API
  3: The VM could not be snapshotted
  4: Cannot snapshot VM
  5: Failed to snapshot migratable component
  6: Could not get vCPU state GetXsaveState(Invalid argument (os error 22))