When the filesystem will contain 100GB files.
When the filesystem resides on a 32-bit system.
When the filesystem contains a large number of small files.
When filesystem compression is required due to limited disk space.
单选题A system administrator has determined that the /development filesystem needs to be changed from JFS to JFS2 to take advantage of the new capabilites available in JFS2. What is the method to convert the /development filesystem from type JFS to JFS2？（）A Umount the /development filesystem and remount it using the following command： mount -t jfs2 /developmentB Edit the /etc/filesystems file to change the type paramter to jfs2 and change the log parameter to jfs2logC Backup the /development filesystem data， delete the JFS /development filesystem， create the new JFS2 /development filsystem， and restore the data to the /development filesystemD Backup the /development filesystem data， change the /development filesystem using the following command，chfs -t type=jfs2 /development.then， restore the data to the /development filesystem
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单选题A previously functional, scheduled snapshot operation against a JFS2 filesystem has failed. The JFS2 filesystem is mounted and appears intact. What is the most likely cause of the failure and how should it be resolved?（）A The associated JFS2 log device has failed. Check the log device and varyon the device.B The logical volume that hosts the snapshots is full. Increase the size of the logical volume.C Fifteen snapshots already exist for the given JFS2 filesystem. Delete at least one existing snapshot.D The volume group that hosts both the snapshots and JFS2 filesystem has lost quorum. Check and correct the integrity of the volume group.
单选题An administrator needs to apply a Technology Level update. During the preview install， the output indicates that there is insufficient space in the /usr filesystem. Review of the root volume group indicates there are no available physical partitions， but the /test jfs2 filesystem is only 8% used. What is the most efficient method to use the available space in the /test filesystem to apply the update？（）A Use chfs to reduce the /test filesystemB Use cplv to copy the /test filesystem to a smaller logical volumeC Use migratepv l to move the /test filesystem to a different volume groupD Backup the /test filesystem， remove it， and recreate it with a smaller size
单选题The system administrator notices that there is an I/O bottleneck on one of three disks in datavg volume group. This problem disk contains the JFS log， loglv00 and one filesystem， /mydatabase. There are no other logical volumes on this disk. Which of the following options would be the best solution？（）AIncrease the size of the JFS log logical volume so more transacations can be written to this log.BCreate a second， additional JFS log and have the /mydatabase logical volume point to both JFS logs.CMigrate the JFS log device to another physical disk in the same volume group.DOnly one JFS log device for each volume group can be used. Use the migratepv command to move the JFS log device to an empty disk in another volume group.
单选题A system administrator can create logical volumes and then add file systems to them， or create the file system directly. What is an advantage of the two-step approach instead of the one-step approach？（）A The number of bytes per inode can be specified.B Placement of the filesystem on the disk can be specified.C The jfslog can be specified on creation of the filesystem.D Either a JFS or JFS2 filesystem can be created on the logical volume.
单选题An Enhanced Journeyed File System that is in a shred non-concurrent Volume Group is growing at an unexpected rate. It is the administrator’s task to enlarge the filesystem without interrupting service. What method should be sued to achieve this goal？（）AUse HACMP C-SPOC to increase the size of the JFS2 filesystem.BUse the smitty jfs2 fastpath to increase the size of the JFS2 filesystem.CUse HACMP C-SPOC to increase the size of the JFS2 filesystem and inline JFS2 logs.DUse mklvcopy hdisk# 2 jfs2lvname to increase the size of the JFS2 filesystem，then use splitlvcopy jfs2lvname 1 -y newjfs2lvname hdisk# to present the increased JFS2 filesystem to HACMP.
单选题In AIX 5L and later， the operating system supports the /proc filesystem. What would be the best description of the /proc filesystem？（）AIt is a pseudo filesystem that maps processes and kernel data structures to corresponding files.BIt is a JFS mounted filesystem that provides an exact representation of what is happening to a proces at a single and discrete point of time.CIt is a JFS mounted filesystem that maps processes and read-only files related to these processes.DIt is a pseudo filesystem that contains data that represents the state of the parent processes （but not their threads） in a system.
