VFS: Unable to mount root fs on unknown-block(0,0)

[    0.137372]  (driver?)
[    0.137550] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[    0.137762] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.4.34 #1
[    0.137937] Hardware name: linux,dummy-virt (DT)
[    0.138079] Call trace:
[    0.138153]  dump_backtrace+0x0/0x150
[    0.138256]  show_stack+0x14/0x20
[    0.138365]  dump_stack+0xb4/0xd8
[    0.138469]  panic+0x150/0x328
[    0.138576]  mount_block_root+0x21c/0x340
[    0.138682]  mount_root+0x84/0x94
[    0.138789]  prepare_namespace+0x16c/0x1b4
[    0.138896]  kernel_init_freeable+0x248/0x270
[    0.139038]  kernel_init+0x10/0x100
[    0.139144]  ret_from_fork+0x10/0x18
[    0.139252] Kernel Offset: 0x586ee8400000 from 0xffff800010000000
[    0.139427] PHYS_OFFSET: 0xffffc6b280000000
[    0.139533] CPU features: 0x0002,22a08218
[    0.139639] Memory Limit: none
[    0.139746] Rebooting in 1 seconds..

原来是 -drive id=image-3da809c1d0297a2d,file=kata-containers-ubuntu-latest.img,aio=threads,format=raw,if=none,readonly没有指定 -device virtio-blk-pci，如下指定就可以了

 -device virtio-blk-pci,disable-modern=false,drive=image-3da809c1d0297a2d,scsi=off,config-wce=off,romfile=,share-rw=on 
        -drive id=image-3da809c1d0297a2d,file=kata-containers-ubuntu-latest.img,aio=threads,format=raw,if=none,readonly