Livemigration wont work - high cachemiss

S

Sralityhe

Well-Known Member
Jul 5, 2017
81
3
48
31
Hello Forum,

today i tried to livemigrate a few vm for kernel update which worked great like usual on most of them. But one wont work. What i notice is high cachemiss cound, which i never noticed in any other migration before (always 0)

Do you have any ideas?

Code: 
2018-08-02 12:15:02 starting online/live migration on unix:/run/qemu-server/132.                       migrate
2018-08-02 12:15:02 migrate_set_speed: 8589934592
2018-08-02 12:15:02 migrate_set_downtime: 0.1
2018-08-02 12:15:02 set migration_caps
2018-08-02 12:15:02 set cachesize: 67108864
2018-08-02 12:15:02 start migrate command to unix:/run/qemu-server/132.migrate
2018-08-02 12:15:03 migration status: active (transferred 2281579349, remaining                        431620096), total 554508288)
2018-08-02 12:15:03 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:04 migration status: active (transferred 2399429515, remaining                        312340480), total 554508288)
2018-08-02 12:15:04 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:04 migration status: active (transferred 2410966235, remaining                        300662784), total 554508288)
2018-08-02 12:15:04 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:04 migration status: active (transferred 2420647920, remaining                        290848768), total 554508288)
2018-08-02 12:15:04 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:04 migration status: active (transferred 2432804686, remaining                        278396928), total 554508288)
2018-08-02 12:15:04 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:05 migration status: active (transferred 2444907623, remaining                        266215424), total 554508288)
2018-08-02 12:15:05 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:05 migration status: active (transferred 2456953329, remaining                        253988864), total 554508288)
2018-08-02 12:15:05 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:05 migration status: active (transferred 2468924956, remaining                        241930240), total 554508288)
2018-08-02 12:15:05 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:05 migration status: active (transferred 2481073622, remaining                        229437440), total 554508288)
2018-08-02 12:15:05 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:05 migration status: active (transferred 2493070044, remaining                        217276416), total 554508288)
2018-08-02 12:15:05 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:05 migration status: active (transferred 2505271603, remaining                        204939264), total 554508288)
2018-08-02 12:15:05 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:05 migration status: active (transferred 2517190283, remaining                        192749568), total 554508288)
2018-08-02 12:15:05 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:05 migration status: active (transferred 2529358722, remaining                        180576256), total 554508288)
2018-08-02 12:15:05 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:05 migration status: active (transferred 2541397822, remaining                        167628800), total 554508288)
2018-08-02 12:15:05 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:05 migration status: active (transferred 2553562598, remaining                        153395200), total 554508288)
2018-08-02 12:15:05 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:06 migration status: active (transferred 2565513714, remaining                        141352960), total 554508288)
2018-08-02 12:15:06 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:06 migration status: active (transferred 2577514051, remaining                        129273856), total 554508288)
2018-08-02 12:15:06 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:06 migration status: active (transferred 2589773300, remaining                        116772864), total 554508288)
2018-08-02 12:15:06 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:06 migration status: active (transferred 2601818808, remaining                        104636416), total 554508288)
2018-08-02 12:15:06 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:06 migration status: active (transferred 2613847828, remaining                        92549120), total 554508288)
2018-08-02 12:15:06 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:06 migration status: active (transferred 2626024799, remaining                        80220160), total 554508288)
2018-08-02 12:15:06 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:06 migration status: active (transferred 2638041894, remaining                        67969024), total 554508288)
2018-08-02 12:15:06 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:06 migration status: active (transferred 2650181947, remaining                        55668736), total 554508288)
2018-08-02 12:15:06 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:06 migration status: active (transferred 2662125431, remaining                        43372544), total 554508288)
2018-08-02 12:15:06 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:07 migration status: active (transferred 2674174854, remaining                        31318016), total 554508288)
2018-08-02 12:15:07 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:07 migration status: active (transferred 2686265542, remaining                        19120128), total 554508288)
2018-08-02 12:15:07 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 13760 overflow 0
2018-08-02 12:15:07 migration status: active (transferred 2698315282, remaining                        24014848), total 554508288)
2018-08-02 12:15:07 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 16052 overflow 0
2018-08-02 12:15:07 migration status: active (transferred 2710373057, remaining                        11886592), total 554508288)
2018-08-02 12:15:07 migration xbzrle cachesize: 67108864 transferred 12382 pages                        119 cachemiss 18990 overflow 0
2018-08-02 12:15:07 migration status error: failed
2018-08-02 12:15:07 ERROR: online migrate failure - aborting
2018-08-02 12:15:07 aborting phase 2 - cleanup resources
2018-08-02 12:15:07 migrate_cancel
drive-scsi0: Cancelling block job
drive-scsi0: Done.
2018-08-02 12:15:11 ERROR: migration finished with problems (duration 00:01:23)
migration problems

Kind regards
 
I tried a few things and looks like there was a nbd server running. after stopping it the migration works aggain.

regards
 
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