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Can I resize a Luks partition?

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Can I resize a Luks partition?

Yes, you can, as neither dm-crypt nor LUKS stores partition size. Whether you should is a different question. Personally I recommend backup, recreation of the encrypted partition with new size, recreation of the filesystem and restore. Resizing a dm-crypt or LUKS container does not resize the filesystem in it.

How do I increase my Luks LVM?

Resizing ext4 on LUKS on LVM

  1. Step 1: resize the logical volume: # lvextend -L +50G /dev/VG-0/LV-1.
  2. Step 2: open the LUKS volume: # cryptsetup luksOpen /dev/VG-0/LV-1 crypt_LV-1.
  3. Step 3: resize the inner filesytem (extend to fit space): # e2fsck -f /dev/mapper/crypt_LV-1 # resize2fs /dev/mapper/crypt_LV-1.

Can GParted resize LVM?

Use GParted to resize the LVM physical volume. GParted won’t let you shrink the LVM physical volume to a size smaller than what the unallocated space allows.

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How can I shrink my Luks?

So far, I think that I need to do:

  1. Create an (encrypted) backup of the filesystem.
  2. Unmount the existing ext4 filesystem (e.g. by booting into a Live CD).
  3. Resize the existing ext4 filesystem.
  4. cryptsetup resize /dev/mapper/ExistingExt4 -b $SECTORS.
  5. Close/ “unmount” the LUKS partition using cryptsetup luksClose ExistingExt4.

What is Cryptsetup?

cryptsetup is used to conveniently setup dm-crypt managed device- mapper mappings. These include plain dm-crypt volumes and LUKS volumes. In addition, cryptsetup provides limited support for the use of loop-AES volumes, TrueCrypt, VeraCrypt and BitLocker compatible volumes.

How do I resize btrfs?

How to Resize / Expand a Btrfs Volume / Filesystem

  1. Resizing partition to use available space on original disk. Verify your disk space and current partition’s size with fdisk or parted if your disk is larger than 2 terabyes:
  2. Add a new disk to btrfs volume.

How do I extend LUKS encrypted volume?

The main steps are:

  1. Boot into live USB.
  2. Decrypt your file system. sudo cryptsetup luksOpen /dev/sda5 crypt1.
  3. Get the live CD to recognize (activate) your LVM. sudo vgscan –mknodes sudo vgchange -ay.
  4. Resize the Crypt.
  5. Resize the (LVM) Physical Volume.
  6. Resize your root (LVM) Logical Volume.
  7. Resize the filesystem.
  8. Reboot.
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How do I increase the size of the LVM partition in Linux?

How to Extend LVM Partition with lvextend command in Linux

  1. Step:1 Type ‘ df -h’ command to list the file system.
  2. Step:2 Now check whether free space is available space in the volume group.
  3. Step:3 Use lvextend command to increase the size.
  4. Step:3 Run the resize2fs command.
  5. Step:4 Use df command and verify /home size .

How do I shrink encrypted LVM?

Reduce an encrypted partition Reduce the (root) (LVM) Logical Volume with lvreduce. Reduce the (LVM) Physical Volume with pvresize. Reduce the Crypt with cryptsetup. Reboot to reduce the Partition storing the crypt with fdisk.

How do I remove LUKS partition?

Deleting LUKS volume

  1. Determining the underlying device. Run the following command to determine the underlying device for the LUKS device:
  2. Delete existing key on the device.
  3. Delete the LUKS device.
  4. Remove the LVM volume.

What is Cryptsetup in Linux?

Cryptsetup provides an interface for configuring encryption on block devices (such as /home or swap partitions), using the Linux kernel device mapper target dm-crypt. This package includes support for automatically configuring encrypted devices at boot time via the config file /etc/crypttab. …

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