A system administrator decides to review the system error log after installing new hardware. Which of the following is the correct command to use？（）

单项选择题Asystemadministrator’sdailymonitoringhasrevealedafailingdiskdrive.Thedrivethatisfailing，hdisk0，isalvmmirroreddrive.Whatisthefirststepthatshouldbetakeninordertophysicallyreplacethisdrive？（）

A.Remove the physical volume from the system.
B.Remove the physical volume from the volume group.
C.Remove the physical partitions from the volume group.
D.Remove the logical volume copies from the failing drive.

单项选择题Errorloganalysisindicatesthatadiskisstartingtofailandwillneedtobereplaced.Thefailingdiskcontainsmultiplelogicalvolumeswhichspanmultipledisks.Afreediskhasbeenaddedtothefailingdisk’svolumegroup.Whichofthefollowingisthemostefficientmethodtomovethedatafromthefailingdisktothenewdisk？（）

A.Back up the data， remove the failing disk from the volume group， then restore the data to the new disk.
B.Use the migratepv command to move data from one disk to another and then remove the failing disk from the volume group.
C.Use the mirrorvg command to mirror the data to the new disk， break the mirror and then remove the failing disk from the volume group.
D.Create a new filesystem on the new disk and use the mv command to move the data to the new filesystem， and then remove the failing disk from the volume group.

单项选择题WhichattributeofalogicalvolumecanNOTbechangedafteritiscreated？（）

A.The placement of the logical volume
B.The stripe size of the logical volume
C.The upper bound of the logical volume
D.The intra-policy of the logical volume

单项选择题WhichattributeofaJFSfilesystemcanNOTbechangedafterthefilesystemiscreated？（）

A.The size of the filesystem
B.The placement of the filesystem
C.The mount point of the filesystem
D.The number of bytes per inode

单项选择题A system administrator is attempting to unmount filesystem  dev data and receives the following message：   umount： 0506-349 Cannot unmount  dev data： The requested resource is busy.   Which of the following commands can be used to determine which process has open references within the filesystem？（）

A.lsfs
B.topas
C.fuser
D.mount