Piersze_21
0 21 フィッシュ michalesq
質問  |
答え |
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Which file system is best used with LVM volumes?
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XFS
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For an MBR partition, what is the max disk size a partition can be?
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2TiB
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How many primary partitions can a GPT partition table have?
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128
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What is the limit for primary partitions when using the MBR partition type?
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4
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Which file on the operating system contains information about which partitions the OS is reading?
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/proc/partitions
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Which tool(s) would you use to manage GPT-based partitions?
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gdisk, parted
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Which command displays information about a swap device?
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swapon -s
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Which command is used to assign a swap signature to a device?
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mkswap
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After adding 50 GB more of physical storage to your existing volume group, you need to extend your /dev/battlestar/galactica logical volume group to include an additional 20GB of storage. How might you accomplish this task?
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vextend -L +20G /dev/battlestar/galactica
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You are extending a logical volume. To do this, you have to add the /dev/xvdj device to the volume group "battlestar". Which command would you issue to accomplish this task?
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vgextend battlestar /dev/xvdj
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What is the maximum disk size for a GPT-based partition?
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8 ZiB
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Select the correct order of tasks for creating an LVM for the first time.
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Create the physical volume (pvcreate), create the volume group (vgcreate), create the logical volume (lvcreate)
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You're in the middle of the Red Hat certification test and forget which LVM commands you need to use to perform the specified tasks. What option(s) do you have?
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man lvm, info lvm
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You've just increased the size of the /dev/battlestar/galactica LVM volume. This volume is mounted in /mnt/mydir; which command would you issue for the operating system and file system to recognize the increase in size on the device?
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xfs_growfs /mnt/mydir
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After making partition changes, the partition changes do not appear in the /proc/partitions. How can you force the kernel to reload the partition tables?
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issue the partprobe command
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Given the volume group "battlestar" and a physical volume in the volume group /dev/xvdf1, which command would accurately create a 19 G logical volume out of /dev/xvdf1 with a volume name of "galactica"?
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lvcreate -n galactica -L 19G battlestar
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Swap space can be created out of GPT-, MBR- and LVM-based partitions/volumes.
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True
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What command is used to inform the OS of partition table changes?
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partprobe
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What are two ways to find information about swap devices enabled on the system?
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swapon -s, cat /proc/swaps
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The file system needs to be created on the device after the logical volume is created (lvcreate).
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True
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What command would you use to install the star utility?
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yum install star
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