我将 centos 6.2 VMDK 上传到 s3，然后使用 ec2 导入卷将其转换为卷。然后我拍摄了该卷的快照并将其删除。现在我尝试从快照创建一个实例，但一直出现以下错误：
“内核崩溃 - 未同步：VFS：无法在未知块 (8,1) 上挂载根文件系统”
甚至我不知道在恢复快照时要使用哪个 AKI...目前我正在尝试使用默认值进行恢复。
完整系统日志如下：
Linux version 2.6.16-xenU (root@ip-10-204-118-8) (gcc version 4.0.2 20051125 (Red Hat 4.0.2-8)) #14 SMP Wed Nov 23 08:48:06 EST 2011
BIOS-provided physical RAM map:
Xen: 0000000000000000 - 0000000026f00000 (usable)
0MB HIGHMEM available.
623MB LOWMEM available.
NX (Execute Disable) protection: active
Built 1 zonelists
Kernel command line: root=/dev/sda1 ro 4
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 65536 bytes)
Xen reported: 1795.672 MHz processor.
Console: colour dummy device 80x25
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Software IO TLB disabled
vmalloc area: e7800000-f53fe000, maxmem 2d7fe000
Memory: 618496k/637952k available (1970k kernel code, 11016k reserved, 628k data, 156k init, 0k highmem)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
Calibrating delay using timer specific routine.. 3593.73 BogoMIPS (lpj=17968651)
Mount-cache hash table entries: 512
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 256K
CPU: L3 cache: 20480K
Checking 'hlt' instruction... OK.
Brought up 1 CPUs
migration_cost=0
Grant table initialized
NET: Registered protocol family 16
Brought up 1 CPUs
xen_mem: Initialising balloon driver.
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
Initializing Cryptographic API
io scheduler noop registered
io scheduler anticipatory registered (default)
io scheduler deadline registered
io scheduler cfq registered
i8042.c: No controller found.
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
Xen virtual console successfully installed as tty1
Event-channel device installed.
netfront: Initialising virtual ethernet driver.
mice: PS/2 mouse device common for all mice
md: md driver 0.90.3 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: bitmap version 4.39
NET: Registered protocol family 2
IP route cache hash table entries: 32768 (order: 5, 131072 bytes)
TCP established hash table entries: 131072 (order: 8, 1048576 bytes)
TCP bind hash table entries: 65536 (order: 7, 524288 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
TCP bic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
NET: Registered protocol family 15
Using IPI No-Shortcut mode
netfront: device eth0 has copying receive path.
Registering block device major 8
XENBUS: Device with no driver: device/console/0
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(8,1)
请帮帮我......过去四天我一直在努力解决这个问题。
答案1
我收到此错误是因为在启动实例时选择了错误的 AKI ID。当我选择正确的 ID 后，此错误消失，实例开始正常工作。