Jedenaste_21
0 21 flashcards michalesq
câu hỏi  |
câu trả lời |
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Command to show all atteched storages to the system?
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blkid
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Command to display all physical volumes?
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pvdisplay
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Command to display all volume groups?
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vgdisplay
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Command to display all logical volumes?
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lvdisplay
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Command to make filesystem for logical volume
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mksf /dev/vgname/lvname
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How to create physical volume for LVM?
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pvcreate /dev/xvdf1 /dev/xvdf2
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How to creage virtual group for LVM?
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vgcreate <vgname> /dev/xvdf1 /dev/xvdf2
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How to create logical volume for LVM?
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lvcreate -n <lvname> -L 10G vgname
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How to Remove logical volume?
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lvremove /dev/volume_name/volume_name_manager
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How to Remove volume groups?
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vgremove <volume_group>
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How to Remove physical volumes?
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pvremove /dev/xvdf1
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Extending volume group battlestar by adding new device
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vgextend battlestar /dev/xvdj
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How to extend a logical volume after adding new disks to virtual group for LVM?
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lvextend -L +20G /dev/vgname/lvname
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Command 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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How to add label for the partition with xfs filesystem?
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xfs_admin -L <label name> /dev/xvdf1
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How to add label for the partition with ext4 filesystem?
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tune2fs (or e2label) -L <label name> /dev/xvdf2
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Create persistent mounts for the system - with UUID?
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1) blkid to get UUID, 2) add UUID=<UUID> /mnt/mount1 xfs default 1 2 to /etc/fstab
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Create persistent mounts for the system - with label?
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1) blkid to get UUID, 2) LABEL=<label name> /mnt/mount2 ext4 defaults 1 2
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How to display how much physical space left?
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free -m
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Creating swap space with LVM
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1) create partition with LVM type, 2) create pv, vg, lv, 3) mkswap /dev/vgname/swap(lvname)
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How to enable swap space?
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swapon /dev/volume_name/swap
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