[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] qemu-xen-3.4-testing: Fix read-only image file handling
On 06/07/2010 07:56 PM, Keir Fraser wrote: ... I suggest add some tracing to function dom0_init() in xenstored and see where that function is failing. The two most obvious places were the opening of those two files in /proc. If they exist then I'm not sure what else could be going wrong. Oh, you should be able to cat /proc/xen/ksd_port and get an integer value. /proc/xen/ksd_kva by contrast gets mmap()ed by xenstored. Are you sure it's ksd_*? Isn't it xsd_*? This is what I'm having: # ls /proc/xen capabilities privcmd xenbus xsd_kva xsd_port # cat /proc/xen/xsd_port 21 #cat /proc/xen/xsd_kva 0xffff8801e8414000 #I was finally able to make it work. The main problem was absence of xen-evtchn module in memory which is why the xenstore daemon was unable to start so I created /etc/sysconfig/modules/xen.modules with the following contents: #!/bin/sh MODULES="xenfs xen-evtchn xen_evtchn" for i in $MODULES ; do modprobe $i >/dev/null 2>&1 doneand after that when I rebooted the dom0 there was xen_evtchn in the `lsmod` output. Unfortunately the xenstore daemon was not running but when I run `xend start` it came online and `xm list` was showing at least dom0 (I had no other domain here so this is good) but after reboot I have to do following to make `xm list` show good data: # lsmod | grep xen xen_evtchn 8344 0 xenfs 15624 1 # xend start Nothing to flush. # xm listName ID Mem VCPUs State Time(s) Domain-0 0 7453 4 r----- 54.1 #The daemon doesn't start on boot although it's trying to start. I think that the problem is that event channel module does get loaded into the memory after the xend is trying to start xenstore daemon (which is bad since xenstore daemon can't start before event channel module) and itself which results into error in connection: # xm listError: Unable to connect to xend: No such file or directory. Is xend running? #Now, when I'm having the working PVops kernel and tools running, I'm trying to get it start up a domain using `xm create HVMguest` and it returns: [2010-06-08 13:58:24 5137] DEBUG (XendDomainInfo:103) XendDomainInfo.create(['vm', ['name', 'rhel5-32fv'], ['memory', 1024], ['maxmem', 1024], ['on_poweroff', 'destroy'], ['on_reboot', 'restart'], ['on_crash', 'restart'], ['on_xend_start', 'ignore'], ['on_xend_stop', 'ignore'], ['vcpus', 1], ['uuid', 'a21e0a64-8fbe-48c2-f28e-9c1cfc7427c7'], ['oos', 1], ['image', ['hvm', ['kernel', '/usr/lib/xen/boot/hvmloader'], ['videoram', 4], ['parallel', 'none'], ['serial', 'pty'], ['acpi', 1], ['apic', 1], ['boot', 'c'], ['cpuid', []], ['cpuid_check', []], ['device_model', '/usr/lib64/xen/bin/qemu-dm'], ['fda', ''], ['fdb', ''], ['guest_os_type', 'default'], ['hap', 1], ['hpet', 0], ['isa', 0], ['keymap', 'en-us'], ['localtime', 0], ['nographic', 0], ['oos', 1], ['pae', 1], ['pci', []], ['pci_msitranslate', 1], ['pci_power_mgmt', 0], ['rtc_timeoffset', 0], ['sdl', 0], ['soundhw', ''], ['stdvga', 0], ['timer_mode', 1], ['usb', 0], ['usbdevice', ''], ['vcpus', 1], ['vnc', 1], ['vncdisplay', 5], ['vncunused', 0], ['viridian', 0], ['vpt_align', 1], ['xauthority', '/root/.Xauthority'], ['xen_platform_pci', 1], ['memory_sharing', 0], ['tsc_mode', 0], ['nomigrate', 0]]], ['s3_integrity', 1], ['device', ['vbd', ['uname', 'file:/var/lib/xen/images/colossus/rhel5-32fv.img'], ['dev', 'hda'], ['mode', 'w']]], ['device', ['vbd', ['uname', 'file:/home2/test.img'], ['dev', 'sda'], ['mode', 'w']]], ['device', ['vif', ['bridge', 'eth0'], ['mac', '00:16:3e:6b:d5:c0'], ['type', 'netfront']]]]) [2010-06-08 13:58:24 5137] DEBUG (XendDomainInfo:2510) XendDomainInfo.constructDomain [2010-06-08 13:58:24 5137] DEBUG (balloon:187) Balloon: 638692 KiB free; need 16384; done. [2010-06-08 13:58:24 5137] DEBUG (XendDomain:464) Adding Domain: 4[2010-06-08 13:58:24 5137] DEBUG (XendDomainInfo:2848) XendDomainInfo.initDomain: 4 256 [2010-06-08 13:58:24 5137] DEBUG (image:339) No VNC passwd configured for vfb access [2010-06-08 13:58:24 5137] DEBUG (image:889) args: boot, val: c [2010-06-08 13:58:24 5137] DEBUG (image:889) args: fda, val: None [2010-06-08 13:58:24 5137] DEBUG (image:889) args: fdb, val: None [2010-06-08 13:58:24 5137] DEBUG (image:889) args: soundhw, val: None [2010-06-08 13:58:24 5137] DEBUG (image:889) args: localtime, val: 0 [2010-06-08 13:58:24 5137] DEBUG (image:889) args: serial, val: ['pty'] [2010-06-08 13:58:24 5137] DEBUG (image:889) args: std-vga, val: 0 [2010-06-08 13:58:24 5137] DEBUG (image:889) args: isa, val: 0 [2010-06-08 13:58:24 5137] DEBUG (image:889) args: acpi, val: 1 [2010-06-08 13:58:24 5137] DEBUG (image:889) args: usb, val: 0 [2010-06-08 13:58:24 5137] DEBUG (image:889) args: usbdevice, val: None [2010-06-08 13:58:24 5137] DEBUG (image:889) args: gfx_passthru, val: None[2010-06-08 13:58:24 5137] INFO (image:822) Need to create platform device.[domid:4] [2010-06-08 13:58:24 5137] DEBUG (XendDomainInfo:2875) _initDomain:shadow_memory=0x0, memory_static_max=0x40000000, memory_static_min=0x0. [2010-06-08 13:58:24 5137] DEBUG (balloon:172) Balloon: tmem relinquished 0 KiB of 431872 KiB requested. [2010-06-08 13:58:24 5137] DEBUG (balloon:193) Balloon: 634112 KiB free; 0 to scrub; need 1065984; retries: 20. [2010-06-08 13:58:24 5137] DEBUG (balloon:207) Balloon: setting dom0 target to 7524 MiB. [2010-06-08 13:58:24 5137] DEBUG (XendDomainInfo:1479) Setting memory target of domain Domain-0 (0) to 7524 MiB. [2010-06-08 13:58:24 5137] DEBUG (balloon:187) Balloon: 634112 KiB free; need 72704; done. [2010-06-08 13:58:24 5137] DEBUG (balloon:193) Balloon: 634112 KiB free; 0 to scrub; need 1065984; retries: 20. [2010-06-08 13:58:47 5137] DEBUG (XendDomainInfo:1479) Setting memory target of domain Domain-0 (0) to 7945 MiB. [2010-06-08 13:58:47 5137] DEBUG (balloon:187) Balloon: 634112 KiB free; need 431104; done. [2010-06-08 13:58:47 5137] ERROR (XendDomainInfo:2934) XendDomainInfo.initDomain: exception occurred Traceback (most recent call last):File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line 2893, in _initDomain balloon.free(memory + shadow + vtd_mem, self)File "/usr/lib64/python2.4/site-packages/xen/xend/balloon.py", line 237, in free raise VmError(VmError: Not enough memory is available, and dom0 cannot be shrunk any further [2010-06-08 13:58:47 5137] ERROR (XendDomainInfo:485) VM start failed Traceback (most recent call last):File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line 471, in start XendTask.log_progress(31, 60, self._initDomain)File "/usr/lib64/python2.4/site-packages/xen/xend/XendTask.py", line 209, in log_progress retval = func(*args, **kwds)File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line 2937, in _initDomain raise exnVmError: Not enough memory is available, and dom0 cannot be shrunk any further [2010-06-08 13:58:47 5137] DEBUG (XendDomainInfo:3083) XendDomainInfo.destroy: domid=4 [2010-06-08 13:58:47 5137] DEBUG (XendDomainInfo:2413) Destroying device model [2010-06-08 13:58:47 5137] ERROR (XendDomainInfo:2416) Device model destroy failed X86_HVM_ImageHandler instance has no attribute 'sentinel_lock' Traceback (most recent call last):File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line 2414, in _releaseDevices self.image.destroyDeviceModel()File "/usr/lib64/python2.4/site-packages/xen/xend/image.py", line 621, in destroyDeviceModel self.sentinel_lock.acquire()AttributeError: X86_HVM_ImageHandler instance has no attribute 'sentinel_lock' [2010-06-08 13:58:47 5137] DEBUG (XendDomainInfo:2420) Releasing devices[2010-06-08 13:58:47 5137] ERROR (XendDomainInfo:108) Domain construction failed Traceback (most recent call last):File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line 106, in create vm.start()File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line 471, in start XendTask.log_progress(31, 60, self._initDomain)File "/usr/lib64/python2.4/site-packages/xen/xend/XendTask.py", line 209, in log_progress retval = func(*args, **kwds)File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line 2937, in _initDomain raise exnVmError: Not enough memory is available, and dom0 cannot be shrunk any further I also tried to decrease the memory for dom0 as advised on the list (using the `xm mem-set 0 2048`) but still the same result but I saw something in the qemu-dm log file about -vcpu-avail option is invalid: # cat /var/log/xen/qemu-dm-rhel5-32fv.log domid: 1 qemu: the number of cpus is 1 /usr/lib64/xen/bin/qemu-dm: invalid option -- '-vcpu_avail' #Now I'm thinking whether there wasn't a change of qemu-dm to stubdom-dm. Where is it located and could you provide me some example configuration file for xen-4.1-unstable? Thanks, Michal _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel -- Michal Novotny<minovotn@xxxxxxxxxx>, RHCE Virtualization Team (xen userspace), Red Hat _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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