问题描述：使用qemu-imgcreate-fqcow2-bcirros.qcow2vmhost.img20G创建虚拟机磁盘出现以下报错，报错内容：qemu-img:vmhost.img:BackingfilespecifiedwithoutbackingformatDetectedformatofqcow2.[root@ecsimages]#qemu-imgcreate-fqcow2-bcirros.qcow2vmho

前几天遇到了一起备份失败案例，RMAN备份过程中遇到了归档日志损坏的情况，还是第一次遇到这种案例，这里记录一下这个案例的具体情况。备份作业失败，检查RMAN备份的输出日志，发现一个归档日志文件损坏（corrupt）了，如下所示：RMAN-08137: warning: archived log not deleted, needed f

    Asaruleofthumb,rememberthatslicingalargesliceorarraycanleadtopotential highmemoryconsumption.Theremainingspacewon’tbereclaimedbytheGC,and wecankeepalargebackingarraydespiteusingonlyafewelements.Using

 Theslicenowreferencesthenewbackingarray.Whatwillhappentotheprevious backingarray?Ifit’snolongerreferenced,it’seventuallyfreedbythegarbagecollector(GC)ifallocatedontheheap.    Tosummarize,theslicelengthi

TopicThisarticleappliestoBIG-IP10.x.Forinformationaboutotherversions,refertothefollowingarticles:K13132:BackingupandrestoringBIG-IPconfigurationfiles(11.x-13.x)K3499:BackingupandrestoringBIG-IPconfigurationfiles(9.x)Thi

JSF隐藏域传值到后台 Insomecases,youmayneedtopassanewhiddenvaluetoabackingbean.Generally,therearetwoways:1.HTMLTag+getRequestParameterMap()RenderhiddenfieldwithplainHTMLinput,hard-codednewhiddenvalueandaccessinbackingbe

 [root@tgtamd-serverios]#tgtadm-Liscsi-oshow-mtargetTarget1:iqn.hxl.com.testSysteminformation:Driver:iscsiState:readyI_Tnexusinformation:LUNinformation:LUN:0Type:controller

WARNING:overlay2:thebackingxfsfilesystemisformattedwithoutd_typesupport,whichleadstoincorrectbehavior.Reformatthefilesystemwithftype=1toenabled_typesupport.Runningwithoutd_typesupportwillnotbesupportedinfu

DockerWarning:thebackingxfsfilesystemisformattedwithoutd_typesupporthttps://www.cnblogs.com/zhangeamon/p/7918567.htmllinux7.2不能识别存储,Centos7

Themodelbackingthe'MainDbContext'contexthaschangedsincethedatabasewascreated.ConsiderusingCodeFirstMigrationstoupdatethedatabase(http://g