aix更换mirror硬盘hdisk0

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1、AIX根盘镜像更换hdisk(dumpdevice问题)AIX如果pagingswap和dumpdevice不同,系统不会mirrordumpdevice(Thesystemdumpdevices"primary/dev/hd6andsecondary/dev/sysdumpnull"shouldnotbemirrored.),下面是系统正常情况下的dumpdevice的信息:#lsvg-lrootvgrootvg:LVNAMETYPELPsPPsPVsLVSTATEMOUNTPOINThd5boot122closed/syncdN/Ahd6paging2444882open/syncdN

2、/Ahd8jfs2log122open/syncdN/Ahd4jfs28162open/syncd/hd2jfs240802open/syncd/usrhd9varjfs240802open/syncd/varhd3jfs216322open/syncd/tmphd1jfs240802open/syncd/homehd10optjfs2801602open/syncd/optlg_dumplvsysdump16161open/syncdN/A#sysdumpdev-lprimary/dev/lg_dumplvsecondary/dev/sysdumpnullcopydirectory/va

3、r/adm/rasforcedcopyflagTRUEalwaysallowdumpFALSEdumpcompressionON#lslv-llg_dumplvlg_dumplv:N/APVCOPIESINBANDDISTRIBUTIONhdisk0016:000:0000%000:000:000:000:016目前dumpdevice只有一个,在hdisk0上,如果hdisk0出现故障,系统可以从hdisk1启动,系统运行也不会有问题,只是没有dumpdevice,所以如果需要更换hdisk0,需要特别注意一些别的问题,具体步骤:1unmirrorrootvgsmittyunmirror

4、vg或者unmirrorvgrootvghdisk02查看unmirror后vg的状态#lsvg-lrootvgrootvg:LVNAMETYPELPsPPsPVsLVSTATEMOUNTPOINThd5boot111closed/syncdN/Ahd6paging2442441open/syncdN/Ahd8jfs2log111open/syncdN/Ahd4jfs2881open/syncd/hd2jfs240401open/syncd/usrhd9varjfs240401open/syncd/varhd3jfs216161open/syncd/tmphd1jfs240401open/

5、syncd/homehd10optjfs280801open/syncd/optlg_dumplvsysdump16161closed/syncdN/A3ReduceVGsmittyreducevg或者reducevgrootvghdisk0将会报错:rmlv:Warning,alldatabelongingtologicalvolumelg_dumplvonphysicalvolumehdisk0willbedestroyed.rmlv:Doyouwishtocontinue?y(es)n(o)?0516-016ldeletepv:Cannotdeletephysicalvolumewi

6、thallocatedpartitions.Useeithermigratepvtomovethepartitionsorreducevgwiththe-doptiontodeletethepartitions.0516-884reducevg:Unabletoremovephysicalvolumehdisk0.解决方法:3.1查看dumpdevice的状态#lslv-llg_dumplvlg_dumplv:N/APVCOPIESINBANDDISTRIBUTIONhdisk0016:000:0000%000:000:000:000:0163.2修改dumsysdumpdev-P-p/d

7、ev/sysdumpnullprimary/dev/sysdumpnullsecondary/dev/sysdumpnullcopydirectory/var/adm/rasforcedcopyflagTRUEalwaysallowdumpFALSEdumpcompressionON3.3reducevgsmittyreducevg0516-914rmlv:Warning,alldatabelongingtologica