[Xen-devel] Fw: Fw: How to print mfn structure to print pages
On Monday, 4 May 2015 10:11 AM, Minalkumar Patel patel...@yahoo.co.in wrote: Dear all, Xenmaintains an address mapping table. How it works? How to map independent pfn tomachine dependent frame number (mfn) for each guest VM on real platform? if physical page is copied from one to second system as per its same pfn number then how would we know the same on real Xen set up or where in the code of xen we extract such information by printing it? I want to retrieve pages during live migration?so i can use into simulation environment?Regards, ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
[Xen-devel] Fw: How to print mfn structure to print pages
On Monday, 4 May 2015 10:11 AM, Minalkumar Patel patel...@yahoo.co.in wrote: Dear all, Xenmaintains an address mapping table. How it works? How to map independent pfn tomachine dependent frame number (mfn) for each guest VM on real platform? if physical page is copied from one to second system as per its same pfn number then how would we know the same on real Xen set up or where in the code of xen we extract such information by printing it? I want to retrieve pages during live migration?so i can use into simulation environment?Regards, ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
[Xen-devel] How to print mfn structure to print pages
Dear all, Xenmaintains an address mapping table. How it works? How to map independent pfn tomachine dependent frame number (mfn) for each guest VM on real platform? if physical page is copied from one to second system as per its same pfn number then how would we know the same on real Xen set up or where in the code of xen we extract such information by printing it? I want to retrieve pages during live migration?so i can use into simulation environment?Regards,___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
[Xen-devel] Fw: unsubscribe
MinalKumar Patel(M.E. - Computer Engineering)
Lecturer,Computer Engineering Department,
A.D.Patel Institute of Technology,
New Vallabh Vidyanagar,Karamsad - 388121,
Anand,Gujarat.
Mobile - 9998574188
E-mail Id - patel...@yahoo.co.in
URL - http://www.minall.co.in
On Friday, 9 January 2015 4:41 AM, Raval, Brijen bra...@quicinc.com
wrote:
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[Xen-devel] collect Dirty bitmap from Xen source code
I am working on Xen live Migration. I want to print dirty_bitmap which is given in XEN_GUEST_HANDLE_64(uint8) dirty_bitmap in shadow.h and Dirty bit tracking is given in: int shadow_track_dirty_vram(struct domain *d, unsigned long first_pfn, unsigned long nr, XEN_GUEST_HANDLE_64(uint8) dirty_bitmap); Anyone can help me to print dirty bitmap as i want to collect dirty bitmap from log files or I want to print dirty bitmap.___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
[Xen-devel] Fw: Dataset for pre-copy while migrating VM???
i want to extract dirty page bitmap so it can able to make possible statistics of those pages - historical analysis i am forwarding previous email with this I request to give me little idea. How people use Xen hypervisor for this task on MATLAB/R language/Other tool On Friday, 2 January 2015 1:15 PM, Minalkumar Patel patel...@yahoo.co.in wrote: My idea is to get dataset of pre-copy at the time of live migration. basically i am planning to write few code into opnesource so i need dataset. actually, from which file/log file i can able to get page modificaiton information. let take scenario, if VM is migrating, then it will check dirty page in each iteration. if found dirty pages, then it would skip those pages and may send them in next round (not current round) once they are non-dirty. so from which file, these information can be possible to collect/gather or where i can modify code to print such output in xc_domain_save. Verbose -vvv utility can't give detail statastic but it gives number of pages dirty/iteration number etc but non the informaiotn page-vise. I get daily message from xen-devel so how to avoid daily messages? Regards, ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
[Xen-devel] (no subject)
i got daily patch emails from xen-devel but i don't need on this email address so how to deactivate it please tell me___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
[Xen-devel] error of VM Migration (xl toolstack) failed when migrating Webserver VM with 100 connecitons using httperf
error of Migration failed when migrating Webserver VM with 100 connecitons using httperf First time it generats (a part of follwoing output): migration target: Transfer complete, requesting permission to start domain. migration sender: Target has acknowledged transfer. migration sender: Giving target permission to start. migration target: Got permission, starting domain. [everything ok uptill now] libxl: error: libxl.c:321:libxl__domain_rename: domain with name drbdvm1 already exists. migration target: Failure, destroying our copy. migration sender: Target reports startup failure (status code 6). migration target: Cleanup OK, granting sender permission to resume. migration sender: Trying to resume at our end. libxl: debug: libxl.c:435:libxl_domain_resume: ao 0xa91bf0: create: how=(nil) callback=(nil) poller=0xa91c50 xc: error: Cannot resume uncooperative HVM guests: Internal error libxl: error: libxl.c:404:libxl__domain_resume: xc_domain_resume failed for domain 10: No such file or directory libxl: debug: libxl_event.c:1499:libxl__ao_complete: ao 0xa91bf0: complete, rc=-3 libxl: debug: libxl.c:438:libxl_domain_resume: ao 0xa91bf0: inprogress: poller=0xa91c50, flags=ic libxl: debug: libxl_event.c:1471:libxl__ao__destroy: ao 0xa91bf0: destroy Migration failed due to problems at target. Second time it generates (a part of follwing output): xc: detail: Start last iteration [everything ok uptill now] libxl: debug: libxl_dom.c:933:libxl__domain_suspend_common_callback: issuing PVHVM suspend request via XenBus control node libxl: debug: libxl_dom.c:937:libxl__domain_suspend_common_callback: wait for the guest to acknowledge suspend request libxl: error: libxl_dom.c:958:libxl__domain_suspend_common_callback: guest didn't acknowledge suspend, cancelling request libxl: error: libxl_dom.c:980:libxl__domain_suspend_common_callback: guest didn't acknowledge suspend, request cancelled xc: error: Suspend request failed: Internal error xc: error: Domain appears not to have suspended: Internal error libxl: debug: libxl_event.c:512:libxl__ev_xswatch_register: watch w=0x21c5f80 wpath=/local/domain/0/device-model/10/logdirty/ret token=3/1: register slotnum=3 libxl: debug: libxl_event.c:457:watchfd_callback: watch w=0x21c5f80 wpath=/local/domain/0/device-model/10/logdirty/ret token=3/1: event epath=/local/domain/0/device-model/10/logdirty/ret libxl: debug: libxl_event.c:457:watchfd_callback: watch w=0x21c5f80 wpath=/local/domain/0/device-model/10/logdirty/ret token=3/1: event epath=/local/domain/0/device-model/10/logdirty/ret libxl: debug: libxl_event.c:549:libxl__ev_xswatch_deregister: watch w=0x21c5f80 wpath=/local/domain/0/device-model/10/logdirty/ret token=3/1: deregister slotnum=3 libxl: debug: libxl_event.c:426:watchfd_callback: watch epath=/local/domain/0/device-model/10/logdirty/ret token=3/1: empty slot xc: detail: Save exit rc=1 libxl-save-helper: debug: complete r=1: No such device libxl: error: libxl_dom.c:1266:libxl__xc_domain_save_done: saving domain: domain did not respond to suspend request: No such device libxl: debug: libxl_event.c:1499:libxl__ao_complete: ao 0x21c5bf0: complete, rc=-8 libxl: debug: libxl_event.c:1471:libxl__ao__destroy: ao 0x21c5bf0: destroy migration sender: libxl_domain_suspend failed (rc=-8) xc: error: 0-length read: Internal error xc: error: read_exact_timed failed (read rc: 0, errno: 0): Internal error xc: error: Error when reading batch size (0 = Success): Internal error xc: error: Error when reading batch (0 = Success): Internal error libxl: error: libxl_create.c:820:libxl__xc_domain_restore_done: restoring domain: Resource temporarily unavailable libxl: error: libxl_create.c:902:domcreate_rebuild_done: cannot (re-)build domain: -3 libxl: error: libxl.c:1394:libxl__destroy_domid: non-existant domain 6 libxl: error: libxl.c:1358:domain_destroy_callback: unable to destroy guest with domid 6 libxl: error: libxl_create.c:1153:domcreate_destruction_cb: unable to destroy domain 6 following failed creation migration target: Domain creation failed (code -3). libxl: info: libxl_exec.c:118:libxl_report_child_exitstatus: migration target process [11104] exited with error status 3 Migration failed, failed to suspend at sender. What goes wrong please tell me?It also shows migration of Webserver VM at destination and it can be manually started and in worknig condition. But at sender, VM is still continueing webserver based httperf connections and doesn't turn offso i can have VM at both side ..why sender is not stopping activity? Regards,___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
[Xen-devel] Xen Hardware Setup (DRBD) and Algorithmic Discussion
Hope all would be fine. I request you to guide my two issues for live migraiton: 1) Set up: I would like to migrate my existing system from xen4.1 to xen4.2+. I have been working with xen4.1.4+ DRBD for live migration. I have modified kernel by comping linux and installed xen4.1.4 but now i want to migrate to xen4.2+ so please give any idea. new code of xen 4.2+ is downloaded and make world is done but at the time of migration, ssh connection port 22 error is given. it also shows in grub two entries xenolder and xennewer.so is their xen(newer/older) conflict? 2) Algorithmic Part: I would like to work on Delta compression/Prediction technique for live migration using Xen. I have set up Xen Framework usign DRB D and completed load balancing kind stuff. I used Xen4.1 for my experimental work which gives freedom to work with xm and xl toolstacks. But compression code is available from xen4.2+. I am understanding data structures of xc_domain_save and xc_compression using fossies (source code documentation) given in http://fossies.org/dox/xen-4.4.1/xc__domain__save_8c.html is there any other easy documentation because number of research papers are available but i didn't understand the practical aspect from them. Iansir has requested me about migration v2 (to be proposed in xen6 written by Andrew Cooper) for live migration but i did not able to find any kind of patch of Coopersir in that email. The email is found in May'14 xen-devel but i am not more clear about migration v2. Regards,___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
