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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] the /dev/xvda can not be mounted and read/write when using xl create domU
On 04/16/2014 10:29 AM, duqi wrote: Hello everyone, I have tried to boot the domU folow the below instrctions: The domU kernel that I used is from https://github.com/linux-sunxi/linux-sunxi.git and the 'sunxi-devel' branch. I have compiled the ramdisk with the domu kernel to boot the domu. When I xl console the domU , I tried to mount the /dev/xvda to the /mnt and I met this error: # mount /dev/xvda /mnt [ 681.934232] end_request: I/O error, dev xvda, sector 2 [ 681.934401] EXT3-fs (xvda): error: unable to read superblock [ 681.947103] end_request: I/O error, dev xvda, sector 2 [ 681.947244] EXT2-fs (xvda): error: unable to read superblock [ 681.967089] end_request: I/O error, dev xvda, sector 2 [ 681.967226] EXT4-fs (xvda): unable to read superblock mount: mounting /dev/xvda on /mnt failed: Invalid argument # Then I tried "# dd if=/dev/zero of=/dev/xvda bs=1 count=1000 seek=10000" to test the read and write of /dev/xvda, it also met error: [ 632.851166] end_request: I/O error, dev xvda, sector 16 dd: writing '/dev/xvda': Input/output error 1+0 records in 0+0 records out (2) the domu_all.cfg is here: root@linaro-alip:~# cat domu_all.cfg kernel = "/root/zImage" memory = "64" name = "dom11" vcpus = 1 serial="pty" root="/dev/xvda" extra = "4 console=hvc0,xencons=tty" disk = [ 'phy:/dev/loop2,xvda,w' ] vif=[ 'mac=00:16:3e:56:af:69,bridge=xenbr0,type=netfront', ] Based on the log, I think your loop2 might have problem. If you are using image from Linaro, you should specify the offset in losetup. Here is one: > losetup -o 54525952 /dev/loop2 ./rootfs.imgYou can also try to mount /dev/loop2 in Dom0. If it is successful, DomU should work. Then I boot the domU follow the instructions: losetup /dev/loop2 /root/domU/rootfs.img xl -vvv create domu_all.cfg Add some information ： I want to use the raring rootfs as the rootfs of domu, and the /dev/xvda as the root device of domu, now I compiled the kernel with ramdisk for debug. Could you give me some advices ? Thank you very much. Here is the kernel dump of domU: root@linaro-alip:~# xl console dom11 [ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 3.15.0-rc1-128773-gf7b9c0f-dirty (root@Lenovo-G480) (gcc version 4.8.2 20131014 (prerelease) (cross4 [ 0.000000] CPU: ARMv7 Processor [410fc074] revision 4 (ARMv7), cr=10c5387d [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache [ 0.000000] Machine model: XENVM-4.4 [ 0.000000] cma: CMA: failed to reserve 64 MiB [ 0.000000] Memory policy: Data cache writealloc [ 0.000000] psci: probing function IDs from device-tree [ 0.000000] PERCPU: Embedded 8 pages/cpu @c3f6f000 s8896 r8192 d15680 u32768 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 16256 [ 0.000000] Kernel command line: root=/dev/xvda 4 console=hvc0,xencons=tty [ 0.000000] PID hash table entries: 256 (order: -2, 1024 bytes) [ 0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) [ 0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes) [ 0.000000] Memory: 52384K/65536K available (6317K kernel code, 787K rwdata, 2416K rodata, 2692K init, 292K bss, 13152K reser) [ 0.000000] Virtual kernel memory layout: [ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB) [ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB) [ 0.000000] vmalloc : 0xc4800000 - 0xff000000 ( 936 MB) [ 0.000000] lowmem : 0xc0000000 - 0xc4000000 ( 64 MB) [ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB) [ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB) [ 0.000000] .text : 0xc0208000 - 0xc0a8f994 (8735 kB) [ 0.000000] .init : 0xc0a90000 - 0xc0d312c0 (2693 kB) [ 0.000000] .data : 0xc0d32000 - 0xc0df6ea0 ( 788 kB) [ 0.000000] .bss : 0xc0df6ea8 - 0xc0e40110 ( 293 kB) [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 [ 0.000000] Hierarchical RCU implementation. [ 0.000000] RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=1. [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1 [ 0.000000] NR_IRQS:16 nr_irqs:16 16 [ 0.000000] Architected cp15 timer(s) running at 24.00MHz (virt). [ 0.000008] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 2863311519744ns [ 0.000016] Switching to timer-based delay loop [ 0.000152] Console: colour dummy device 80x30 [ 0.000181] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=240000) [ 0.000194] pid_max: default: 32768 minimum: 301 [ 0.000321] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.000332] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.000879] CPU: Testing write buffer coherency: ok [ 0.001145] /cpus/cpu@0 missing clock-frequency property [ 0.001163] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 [ 0.001205] Xen 4.4 support found, events_irq=31 gnttab_frame=0xb0000000 [ 0.001285] xen:grant_table: Grant tables using version 1 layout [ 0.001332] Grant table initialized [ 0.001416] xen:events: Using FIFO-based ABI [ 0.001439] Xen: initializing cpu0 [ 0.001553] Setting up static identity map for 0x807fe120 - 0x807fe1b8 [ 0.002319] Brought up 1 CPUs [ 0.002332] SMP: Total of 1 processors activated. [ 0.002341] CPU: All CPU(s) started in SVC mode. [ 0.002957] devtmpfs: initialized [ 0.003728] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 4 [ 0.003991] pinctrl core: initialized pinctrl subsystem [ 0.004395] regulator-dummy: no parameters [ 0.005068] NET: Registered protocol family 16 [ 0.005187] DMA: failed to allocate 256 KiB pool for atomic coherent allocation [ 0.007939] No ATAGs? [ 0.008417] Serial: AMBA PL011 UART driver [ 0.016931] edma-dma-engine edma-dma-engine.0: Can't allocate PaRAM dummy slot [ 0.016969] edma-dma-engine: probe of edma-dma-engine.0 failed with error -5 [ 0.017090] xen:balloon: Initialising balloon driver [ 0.022741] vgaarb: loaded [ 0.023384] SCSI subsystem initialized [ 0.024138] usbcore: registered new interface driver usbfs [ 0.024224] usbcore: registered new interface driver hub [ 0.024584] usbcore: registered new device driver usb [ 0.025051] Linux video capture interface: v2.00 [ 0.025101] pps_core: LinuxPPS API ver. 1 registered [ 0.025111] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@xxxxxxxx> [ 0.025146] PTP clock support registered [ 0.025204] EDAC MC: Ver: 3.0.0 [ 0.026062] Advanced Linux Sound Architecture Driver Initialized. [ 0.027270] Switched to clocksource arch_sys_counter [ 0.038473] NET: Registered protocol family 2 [ 0.039042] TCP established hash table entries: 1024 (order: 0, 4096 bytes) [ 0.039076] TCP bind hash table entries: 1024 (order: 1, 8192 bytes) [ 0.039100] TCP: Hash tables configured (established 1024 bind 1024) [ 0.039157] TCP: reno registered [ 0.039172] UDP hash table entries: 256 (order: 1, 8192 bytes) [ 0.039206] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes) [ 0.039376] NET: Registered protocol family 1 [ 0.039780] RPC: Registered named UNIX socket transport module. [ 0.039795] RPC: Registered udp transport module. [ 0.039802] RPC: Registered tcp transport module. [ 0.039809] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 0.184584] futex hash table entries: 256 (order: 2, 16384 bytes) [ 0.196325] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 0.197108] NFS: Registering the id_resolver key type [ 0.197176] Key type id_resolver registered [ 0.197185] Key type id_legacy registered [ 0.197234] msgmni has been set to 102 [ 0.197970] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 249) [ 0.197986] io scheduler noop registered [ 0.197994] io scheduler deadline registered [ 0.198189] io scheduler cfq registered (default) [ 0.260058] console [hvc0] enabled [ 0.260155] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled [ 0.261940] msm_serial: driver initialized [ 0.262148] STMicroelectronics ASC driver initialized [ 0.262568] serial: Freescale lpuart driver [ 0.262771] [drm] Initialized drm 1.1.0 20060810 [ 0.267247] loop: module loaded [ 0.283758] xen_netfront: Initialising Xen virtual ethernet driver [ 0.299796] pegasus: v0.9.3 (2013/04/25), Pegasus/Pegasus II USB Ethernet driver [ 0.299970] usbcore: registered new interface driver pegasus [ 0.300080] usbcore: registered new interface driver asix [ 0.300152] usbcore: registered new interface driver ax88179_178a [ 0.300220] usbcore: registered new interface driver cdc_ether [ 0.300302] usbcore: registered new interface driver smsc75xx [ 0.300384] usbcore: registered new interface driver smsc95xx [ 0.300447] usbcore: registered new interface driver net1080 [ 0.300511] usbcore: registered new interface driver cdc_subset [ 0.300626] usbcore: registered new interface driver zaurus [ 0.300787] usbcore: registered new interface driver cdc_ncm [ 0.300841] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 0.300865] ehci-pci: EHCI PCI platform driver [ 0.300953] ehci-platform: EHCI generic platform driver [ 0.301107] ehci-omap: OMAP-EHCI Host Controller driver [ 0.301196] ehci-orion: EHCI orion driver [ 0.301271] SPEAr-ehci: EHCI SPEAr driver [ 0.301342] tegra-ehci: Tegra EHCI driver [ 0.301803] usbcore: registered new interface driver usb-storage [ 0.303013] mousedev: PS/2 mouse device common for all mice [ 0.304514] i2c /dev entries driver [ 0.304994] usbcore: registered new interface driver uvcvideo [ 0.305020] USB Video Class driver (1.1.1) [ 0.305034] gspca_main: v2.14.0 registered [ 0.305669] xen_wdt: Xen WatchDog Timer Driver v0.01 [ 0.306421] xen_wdt: initialized (timeout=60s, nowayout=0) [ 0.307004] sdhci: Secure Digital Host Controller Interface driver [ 0.307036] sdhci: Copyright(c) Pierre Ossman [ 0.307504] sdhci-pltfm: SDHCI platform and OF driver helper [ 0.307947] usbcore: registered new interface driver usbhid [ 0.307973] usbhid: USB HID core driver [ 0.311044] TCP: cubic registered [ 0.311084] NET: Registered protocol family 17 [ 0.311387] Key type dns_resolver registered [ 0.311502] ThumbEE CPU extension supported. [ 0.323687] Registering SWP/SWPB emulation handler [ 0.329080] blkfront: xvda: flush diskcache: enabled; persistent grants: enabled; indirect descriptors: enabled; [ 0.347192] xvda: unknown partition table [ 0.367730] Setting capacity to 10240 [ 0.367787] xvda: detected capacity change from 0 to 5242880 [ 0.417924] drivers/rtc/hctosys.c: unable to open rtc device (rtc0) [ 0.418071] ALSA device list: [ 0.418093] No soundcards found. [ 0.421706] Freeing unused kernel memory: 2692K (c0a90000 - c0d31000) duqi. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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