Hi, I am using kvmtool for the first time. I followed the instructions from this website to run kvmtool: https://lwn.net/Articles/447556/#kvm When I try to run the kvmtool with Debian Squeeze QCOW2 image with "./kvm run -d debian_squeeze_i386_standard.qcow2" command given in the website I get the following error: [ 0.405130] md: Waiting for all devices to be available before autodetect [ 0.405995] md: If you don't use raid, use raid=noautodetect [ 0.407079] md: Autodetecting RAID arrays. [ 0.407593] md: Scanned 0 and added 0 devices. [ 0.408163] md: autorun ... [ 0.408526] md: ... autorun DONE. [ 0.409635] List of all partitions: [ 0.410104] 0100 65536 ram0 (driver?) [ 0.410721] 0101 65536 ram1 (driver?) [ 0.411356] 0102 65536 ram2 (driver?) [ 0.411956] 0103 65536 ram3 (driver?) [ 0.412562] 0104 65536 ram4 (driver?) [ 0.413179] 0105 65536 ram5 (driver?) [ 0.413784] 0106 65536 ram6 (driver?) [ 0.414393] 0107 65536 ram7 (driver?) [ 0.414977] 0108 65536 ram8 (driver?) [ 0.415603] 0109 65536 ram9 (driver?) [ 0.416227] 010a 65536 ram10 (driver?) [ 0.416838] 010b 65536 ram11 (driver?) [ 0.417483] 010c 65536 ram12 (driver?) [ 0.418102] 010d 65536 ram13 (driver?) [ 0.418729] 010e 65536 ram14 (driver?) [ 0.419366] 010f 65536 ram15 (driver?) [ 0.420000] fd00 260672 vda driver: virtio_blk [ 0.420720] No filesystem could mount root, tried: ext3 ext2 ext4 vfat fuseblk [ 0.421758] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(253,0) [ 0.422320] CPU: 5 PID: 1 Comm: swapper/0 Not tainted 4.4.2CFSNOHZ #11 [ 0.422320] ffffea0000850100 ffff880022a67df0 ffffffff813a1e0d ffffffff81a77300 [ 0.422320] ffff880022a67e68 ffffffff81178de7 ffffffff00000010 ffff880022a67e78 [ 0.422320] ffff880022a67e18 ffff880022a67e20 ffff880022a67e80 0000000000000014 [ 0.422320] Call Trace: [ 0.422320] [<ffffffff813a1e0d>] dump_stack+0x44/0x57 [ 0.422320] [<ffffffff81178de7>] panic+0xc8/0x20f [ 0.422320] [<ffffffff81d52673>] mount_block_root+0x29a/0x2a9 [ 0.422320] [<ffffffff81d52833>] mount_root+0x67/0x6a [ 0.422320] [<ffffffff81d529a2>] prepare_namespace+0x16c/0x1a4 [ 0.422320] [<ffffffff81d522fc>] kernel_init_freeable+0x1e7/0x1fa [ 0.422320] [<ffffffff81d51999>] ? initcall_blacklist+0xba/0xba [ 0.422320] [<ffffffff81780330>] ? rest_init+0x80/0x80 [ 0.422320] [<ffffffff8178033e>] kernel_init+0xe/0xe0 [ 0.422320] [<ffffffff8178c1cf>] ret_from_fork+0x3f/0x70 [ 0.422320] [<ffffffff81780330>] ? rest_init+0x80/0x80 [ 0.422320] Kernel Offset: disabled [ 0.422320] Rebooting in 1 seconds.. # KVM session ended normally. Could you please let me know where I am going wrong? Also the website says build the kernel with following configuration: 4. Build a kernel with the following options: CONFIG_VIRTIO_BLK=y CONFIG_VIRTIO_NET=y CONFIG_VIRTIO_CONSOLE=y CONFIG_SERIAL_8250_CONSOLE=y CONFIG_HW_RANDOM_VIRTIO=y CONFIG_FB_VESA=y Note: also make sure you have CONFIG_EXT2_FS or CONFIG_EXT4_FS if you use the above images. But the kernel is not used when kvmtool is run using ./kvm run -d debian_squeeze_i386_standard.qcow2 Could you please let me know how to use the kernel option? How can I create a new qcow2 image or does the tool support only the images given in the website ? Thanks, Spoorti Doddamani
