Re: [Xen-devel] Bug: /proc/xen Doesn't Mount

[merc1984@xxxxxx]

On Tue, Jun 17, 2014, at 8:44, merc1984@xxxxxx wrote:

Debian Testing, Xen 4.4 compiled.

 

Booting to hypervisor goes well, but

# xl list                                                               

xc: error: Could not obtain handle on privileged command interface (2 =

No such file or directory): Internal error

libxl: error: libxl.c:92:libxl_ctx_alloc: cannot open libxc handle: No

such file or directory

cannot init xl context

 

I find that no xen modules are loaded and /proc/xen is not mounted, so

loaded all xen modules.  I find instructions all over the place to mount

/proc/xen...  but they never say -how-.  mount /proc/xen doesn't work.

 

Ok I've guessed that I should put in fstab:

none    /proc/xen       xenfs   defaults 0 0

 

... although I don't know whether this is the correct approach.

# ls -al /proc/xen
total 0
drwxr-xr-x   2 root root 0 Jun 17 09:02 .
dr-xr-xr-x 242 root root 0 Jun 17 09:02 ..
-r--r--r--   1 root root 0 Jun 17 09:02 capabilities
-rw-------   1 root root 0 Jun 17 09:02 privcmd
-rw-------   1 root root 0 Jun 17 09:02 xenbus
-rw-------   1 root root 0 Jun 17 09:02 xsd_kva
-rw-------   1 root root 0 Jun 17 09:02 xsd_port

 

It must not be, because xl list hangs, and xl create /etc/xen/<domain>.cfg hangs.  xl info does give:

host                   : hydra
release                : 3.14-1-amd64
version                : #1 SMP Debian 3.14.4-1 (2014-05-13)
machine                : x86_64
nr_cpus                : 8
max_cpu_id             : 7
nr_nodes               : 1
cores_per_socket       : 4
threads_per_core       : 2
cpu_mhz                : 2500
hw_caps                : bfebfbff:2c100800:00000000:00007f00:77fafbff:00000000:00000021:00002fbb
virt_caps              : hvm hvm_directio
total_memory           : 8063
free_memory            : 6924
sharing_freed_memory   : 0
sharing_used_memory    : 0
outstanding_claims     : 0
free_cpus              : 0
xen_major              : 4
xen_minor              : 4
xen_extra              : .0
xen_version            : 4.4.0
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          :
xen_commandline        : placeholder dom0_mem=1G,max:1G
cc_compiler            : gcc (Debian 4.9.0-6) 4.9.0
cc_compile_by          : root
cc_compile_domain      : darkmatter.org
cc_compile_date        : Tue Jun 17 07:57:19 PDT 2014
xend_config_format     : 4

 

All our domains are down now, of course.

 

 

 

 

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