Re: Arndale: domU not booting

[Josep Subirats <josep.subirats@bsc.es>]

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I just observed the following output in the serial console, too:
/
//[ 3112.311649] platform 122f0000.sata: Driver exynos-sata requests 
probe deferral//
//[ 3113.060272] attempt to access beyond end of device//
//[ 3113.063630] mmcblk1p1: rw=0, want=15886903136, limit=30210048//
//[ 3113.069404] attempt to access beyond end of device//
//[ 3113.074168] mmcblk1p1: rw=0, want=15886903136, limit=30210048//
//udevd[15288]: '/sbin/modprobe -b xen-backend:vbd' [15290] terminated 
by signal 7 (Bus error)//
//
//udevd[15302]: failed to execute '/etc/xen/scripts/xen-hotplug-cleanup' 
'/etc/xen/scripts/xen-hotplug-cleanup': Exec format error//
//
//[ 3113.272567] Failed to unmap pfn:a7525 rc:-2//
//INIT: Id "T0" respawning too fast: disabled for 5 minutes//
//[ 3339.357270] EXT3-fs error (device mmcblk1p1): ext3_lookup: deleted 
inode referenced: 814983//
//[ 3339.364160] Aborting journal on device mmcblk1p1.//
//[ 3340.185603] EXT3-fs (mmcblk1p1): error: remounting filesystem 
read-only//
/
Thanks,

Josep

On 10/22/2013 06:07 PM, Josep Subirats wrote:
> Dear all,
>
> I followed the steps described in the wiki in order to get an Arnadle 
> board running Xen, but I'm having trouble in starting a domU. Let me 
> describe you the steps I followed. Sorry for such a long mail, but I 
> think that a verbose description is necessary so you can point me what 
> I'm doing wrong.
>
> I couldn't boot properly over the network. This is why I modified the 
> boot script so everything was loaded from the microSD (assuming it 
> only contains one partition, which starts at sector 10240 and has all 
> the necessary files in it at its root, along with the filesystem). To 
> achieve it, simply take the source file I attach in this mail and 
> convert it to an img file with:
>
> /mkimage -T script -C none -d load-xen-mmc.scr.txt load-xen-mmc.img/
>
> Then set up the environment variables in the board with:
>
> /setenv xen_addr_r 0x50000000//
> //setenv kernel_addr_r 0x60000000//
> //setenv dtb_addr_r 0x42000000//
> //setenv script_addr_r 0x40080000//
> //
> //setenv bootcmd_load_linux_mmc 'ext2load mmc 0:1 $kernel_addr_r 
> /zImage'//
> //setenv bootcmd_load_xen_mmc 'ext2load mmc 0:1 $xen_addr_r /xen-uImage'//
> //setenv bootcmd_load_dtb_mmc 'ext2load mmc 0:1 $dtb_addr_r 
> /exynos5250-arndale.dtb'//
> //setenv bootcmd_load_script_mmc 'ext2load mmc 0:1 $script_addr_r 
> /load-xen-mmc.img'//
> //
> //setenv bootcmd 'run bootcmd_load_script_mmc; source $script_addr_r'//
> //setenv xen_bootargs 'sync_console console=dtuart 
> dtuart=/serial@12C20000'//
> //setenv dom0_bootargs 'console=hvc0 ignore_loglevel psci=enable 
> clk_ignore_unused root=/dev/mmcblk1p1 rw rootwait earlyprintk'/
>
> Save the changes with saveenv and simply boot.
>
> At this point, I was able to launch the kernel and Xen successfully, 
> and to log into the dom0. I couldn't find any reference on the exact 
> steps to follow in order to be able to execute the "xl" command 
> properly, as the wiki only says that a native compilation of the tools 
> is necessary. So, what I did was to copy the xen source code in the 
> board and compiled it with "make install-tools" (after running 
> ./configure and installing the required packages).
>
> I had to modify some library paths (apend "include /usr/local/lib/" to 
> /etc/ld.so.conf and run ldconfig), start xencommons manually 
> (/etc/init.d/xencommons start) and finally I've been able to run "xl 
> list". Nevertheless, when xencommons is started, it outputs:
> /
> //root@arndale:/# /etc/init.d/xencommons start//
> //Starting C xenstored...WARNING: Failed to open connection to gnttab//
> //Setting domain 0 name...//
> //Starting xenconsoled...//
> //Starting QEMU as disk backend for dom0//
> ///etc/init.d/xencommons: line 120: 
> /usr/local/lib/xen/bin/qemu-system-i386: No such file or directory/
>
> At this point, xl list displays:
>
> /root@arndale:/# xl list//
> //Name                                        ID   Mem VCPUs      
> State   Time(s)//
> //Domain-0                                     0   128 2     
> r-----     309.8/
>
> Then I tried to create the VM described in the wiki, but to no avail. 
> I copied all the necessary files, concatenated the domU kernel with 
> the xenvm dtb, but in the end I get the following output:
> /
> //root@arndale:~# xl create -c vmDescriptor.cfg //
> //Parsing config from vmDescriptor.cfg//
> ///etc/xen/scripts/block: line 3: dirname: command not found//
> ///etc/xen/scripts/block: line 4: /block-common.sh: No such file or 
> directory//
> ///etc/xen/scripts/block: line 208: xenstore_read_default: command not 
> found//
> //libxl: error: libxl_exec.c:118:libxl_report_child_exitstatus: 
> /etc/xen/scripts/block add [15289] exited with error status 1//
> //libxl: error: libxl_create.c:935:domcreate_launch_dm: unable to add 
> disk devices//
> ///etc/xen/scripts/block: line 3: dirname: command not found//
> ///etc/xen/scripts/block: line 4: /block-common.sh: No such file or 
> directory//
> ///etc/xen/scripts/block: line 208: xenstore_read_default: command not 
> found//
> //libxl: error: libxl_exec.c:118:libxl_report_child_exitstatus: 
> /etc/xen/scripts/block remove [15297] exited with error status 1//
> //Aborted/
>
> Could you please tell me what is happening? Is there a step I'm not 
> taking into consideration?
>
> Many thanks. Best regards,
>
> Josep Subirats



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