On Wed, Feb 24, 2016 at 5:38 PM, Ian Campbell <ian.campb...@citrix.com>
wrote:
> On Wed, 2016-02-24 at 16:35 +0530, Sanjeev Pandita wrote:
> > Hi Ian/All,
>
> Please don't top post.
>
> > If I run the command manually it says OSError: no such file or directory
> > .
> >
> > [root@localhost ~]# /usr/local/lib/xen/bin/pygrub
> > --args=root=/dev/xvda4 rw console=hvc0 earlyprintk=xen
> > --output=/var/run/xen/bootloader.25.out --output-format=simple0
> > --output-directory=/var/run/xen/bootloader.25.d
> > /mnt/xen/CentOS-7-aarch64.img
>
> [...]
>
> > OSError: [Errno 2] No such file or directory: 'rw'
>
> This is because you haven't quoted the "--args", everything from
> "root=/dev/xvda4" up to "earlyprintk=xen" should be quoted in the shell,
> that "rw" is supposed to be part of the eventual kernel command line[*].
>
> You are using a local raw image, so it seems to be doing the local attach
> thing and then passing the raw image to pygrub, which should work I think.
>
> As well as trying to run pygrub by hand again with proper quoting you could
> also try "xl console vm1" after you run the create, it could be that pygrub
> is actually working and waiting for user input on the console.
>
>
Hi Ian,
I started fresh today.
Installed CentOS on a disk and compiled released xen 4.6.0 with
"./configure --prefix=/usr ", followed by make tools and make install.
Used xen.efi to boot the xen , vanilla kernel 4.2.4 (from kernel.org) and
booted the Dom0.
I ran the "xl console vm1" command in another terminal. No prints are seen
on the console. I have run some more commands in different terminals as
well. Here are the commands and results.
Original issue:-
Terminal 1: (xl create output)
[root@dhcp-194 xen]# xl -vvv create vm1
Parsing config from vm1
libxl: debug: libxl_create.c:1557:do_domain_create: ao 0x15d48050: create:
how=(nil) callback=(nil) poller=0x15d480e0
libxl: debug: libxl_arm.c:59:libxl__arch_domain_prepare_config: Configure
the domain
libxl: debug: libxl_arm.c:62:libxl__arch_domain_prepare_config: - Allocate
0 SPIs
libxl: debug: libxl_device.c:269:libxl__device_disk_set_backend: Disk
vdev=xvda spec.backend=unknown
libxl: debug: libxl_device.c:298:libxl__device_disk_set_backend: Disk
vdev=xvda, using backend phy
libxl: debug: libxl_create.c:945:initiate_domain_create: running bootloader
libxl: debug: libxl_device.c:269:libxl__device_disk_set_backend: Disk
vdev=(null) spec.backend=phy
libxl: debug: libxl.c:3097:libxl__device_disk_local_initiate_attach:
locally attaching RAW disk /mnt/xen/CentOS-7-aarch64.img
libxl: debug: libxl_bootloader.c:412:bootloader_disk_attached_cb: Config
bootloader value: pygrub
libxl: debug: libxl_bootloader.c:428:bootloader_disk_attached_cb: Checking
for bootloader in libexec path: /usr/lib/xen/bin/pygrub
libxl: debug: libxl_create.c:1580:do_domain_create: ao 0x15d48050:
inprogress: poller=0x15d480e0, flags=i
libxl: debug: libxl_event.c:639:libxl__ev_xswatch_register: watch
w=0x15d3f4d0 wpath=/local/domain/1 token=3/0: register slotnum=3
libxl: debug: libxl_event.c:2183:libxl__ao_progress_report: ao 0x15d48050:
progress report: ignored
libxl: debug: libxl_bootloader.c:540:bootloader_gotptys: executing
bootloader: /usr/lib/xen/bin/pygrub
libxl: debug: libxl_bootloader.c:544:bootloader_gotptys: bootloader arg:
/usr/lib/xen/bin/pygrub
libxl: debug: libxl_bootloader.c:544:bootloader_gotptys: bootloader arg:
--args=root=/dev/xvda4 rw console=hvc0 earlyprintk=xen
libxl: debug: libxl_bootloader.c:544:bootloader_gotptys: bootloader arg:
--output=/var/run/xen/bootloader.1.out
libxl: debug: libxl_bootloader.c:544:bootloader_gotptys: bootloader arg:
--output-format=simple0
libxl: debug: libxl_bootloader.c:544:bootloader_gotptys: bootloader arg:
--output-directory=/var/run/xen/bootloader.1.d
libxl: debug: libxl_bootloader.c:544:bootloader_gotptys: bootloader arg:
/mnt/xen/CentOS-7-aarch64.img
libxl: debug: libxl_event.c:576:watchfd_callback: watch w=0x15d3f4d0
wpath=/local/domain/1 token=3/0: event epath=/local/domain/1
Terminal 2: [root@dhcp-194 ~]# xl console vm1
(nothing comes on
console after this)
Terminal 3: (manually running the pygrub command)
[root@dhcp-194 xen]# export LD_LIBRARY_PATH=/usr/lib
[root@dhcp-194 xen]# mkdir -p /var/run/xen/bootloader.2.d
[root@dhcp-194 xen]# touch /var/run/xen/bootloader.2.out
[root@dhcp-194 xen]# /usr/lib/xen/bin/pygrub --args="root=/dev/xvda4 rw
console=hvc0 earlyprintk=xen" --output=/var/run/xen/bootloader.2.out
--output-format=simple0 --output-directory=/var/run/xen/bootloader.2.d
/mnt/xen/CentOS-7-aarch64.img
(nothing comes on console after this)
Terminal4: (ls of the logs directory and files. All files are empty)
[root@dhcp-194 ~]# cd /var/run/xen/
[root@dhcp-194 xen]# ls
bootloader.1.d bootloader.1.out bootloader.2.d bootloader.2.out
[root@dhcp-194 xen]# ls -al
total 0
drwxr-xr-x 4 root root 120 Feb 25 12:50 .
drwxr-xr-x 35 root root 1100 Feb 25 10:00 ..
drw------- 2 root root 40 Feb 25 12:07 bootloader.1.d
-rw------- 1 root root 0 Feb 25 12:07 bootloader.1.out
drwxr-xr-x 2 root root 40 Feb 25 12:50 bootloader.2.d
-rw-r--r-- 1 root root 0 Feb 25 12:50 bootloader.2.out
[root@dhcp-194 xen]# ls -al bootloader.*
-rw------- 1 root root 0 Feb 25 12:07 bootloader.1.out
-rw-r--r-- 1 root root 0 Feb 25 12:50 bootloader.2.out
bootloader.1.d:
total 0
drw------- 2 root root 40 Feb 25 12:07 .
drwxr-xr-x 4 root root 120 Feb 25 12:50 ..
bootloader.2.d:
total 0
drwxr-xr-x 2 root root 40 Feb 25 12:50 .
drwxr-xr-x 4 root root 120 Feb 25 12:50 ..
[root@dhcp-194 xen]#
Issue #2:
While above things are in dangling state if I try to create another VM
then a new DomU does not get create.
[root@dhcp-194 xen]# xl -vvv create vm8
Parsing config from vm8
<Nothing comes after the above line>
If I kill pygrub from another terminal , press ctrl C in all other blocking
terminals of vm1 and then start the vm8 , the vm8 boots fine.
Please let me know if am I missing anything in this sequence ?
Thanks,
Sanjeev
> Ian.
>
> [*] normally this information would come from your grub.cfg in the guest,
> so you might want to remove the extra = in your guest cfg, or maybe you are
> deliberately overriding grub.cfg, in any case you are not yet at the point
> where this setting would make any difference.
>
> Ian.
>
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