单项选择题
A.The file system superblock is dirty. It can be replaced from the VGDA
B.The logical volume superblock is dirty. It can be replaced from the VGDA
C.The file system superblock is dirty. It can be replaced from the secondary copy
D.The logical volume superblock is dirty. It can be replaced from the secondary copy
单项选择题 An administrator is attempting to recover afilesystem that fails to manually unmount. The fsck command produces the following output: The current volume is: /dev/fslv02 File system is currently mounted. Invalid file system size in the primary superblock. Invalid file system size in the secondary superblock. Primary superblock is corrupt. Secondary superblock is corrupt. fsck: Cannot continue tried to mount Which steps will resolve the problem?（）
单项选择题 Which command synchronizes or rebuilds the logical volume control block, the device configuration database, and the volume group descriptor areas on the physical volumes?（）
单项选择题 What can be done to enable the debug information for functions to be displayed when using ‘ksh - x’to debug a script?（）