Storage Management and File System Tutorials

Configure OpenLDAP users with NFS home directories using SSSD and autofs on RHEL, Rocky Linux, AlmaLinux, Oracle Linux, and CentOS Stream.

Migrate an already-installed Ubuntu LVM root volume group onto a new LUKS2 physical volume with pvmove, then configure crypttab with initramfs, regenerate the initramfs, and update GRUB for boot-time unlock.

Use systemd-cryptenroll on LUKS2 volumes to add TPM2, FIDO2, PKCS#11, and recovery-key unlock methods, store token metadata in the LUKS2 JSON area, and wire boot unlock through crypttab.

Extend or shrink a LUKS2 ext4 volume on Linux: grow the partition first, run cryptsetup resize on the mapper, then resize2fs; for shrink, reverse the order with offline resize2fs and --size in 512-byte sectors.

Unlock and mount a LUKS USB or moved disk on another Linux host: cryptsetup open by device, UUID=, or /dev/disk/by-uuid, ext4 or LVM inside LUKS, read-only rescue mount, and close the mapper.

Configure LUKS NBDE with Clevis and Tang on RHEL/CentOS: two-VM lab with Tang server, LUKS root client, dracut rebuild, and video—boot without typing a passphrase when Tang is reachable.

Configure crypttab and fstab to unlock and mount a secondary LUKS data partition at boot on Ubuntu or Debian.

Back up and restore a LUKS2 header with cryptsetup luksHeaderBackup and luksHeaderRestore, use a detached header file, and understand when a header copy cannot recover a forgotten passphrase.

Rotate LUKS passphrases and key slots, change cipher or volume key with cryptsetup reencrypt on LUKS2, and back up the header before destructive operations.

Encrypt a new Linux disk partition with LUKS2 using cryptsetup: partition the disk, run luksFormat, open the mapper, create ext4 on /dev/mapper, and mount the volume.

Learn how to list disks in Linux and check disk type, HDD or SSD status, transport interface, model, serial number, partition table, and filesystem details with tested lsblk, sysfs, udevadm, lspci, lshw, fdisk, parted, …

Steps to backup partition in LInux, clone your partition or hard drive, logical volume using fsarchiver Exclude files and directories encrypt backup

Resize primary partition shrink and extend non lvm root, boot and other primary partition, change size of partition using unallocated free space fdisk & parted

In this tutorial I will share the steps to create iSCSI target using Ubuntu 22.04 VM installed on Oracle VirtualBox.

Explore comprehensive strategies to improve disk IO performance, from optimizing kernel parameters to leveraging virtualization tools. Unlock the full potential of your system and achieve faster, more efficient disk …

How to create striped logical volume, How to convert striped to linear logical volume and vice versa, How to extend the size of existing striped logical volume

Steps to configure hybrid software raid 10 (1+0) in Linux with examples. Hybrid RAID 1+0 results from the combination of RAID-0 and RAID-1 Array in Linux.

LVM supports mirrored volumes. A mirror maintains identical copies of data on different devices. LVM ensures that data written to an underlying physical volume is mirrored onto a separate physical volume.

The Logical Volume Manager is a collection of one or more physical devices called Volume Group (VG), each physical device on the VG called a Physical Volume (PV)

Steps to configure software raid with linear raid which is similar with RAID 0 but in Linear RAID the data is stored in linear format instead of stripping

Steps to configure software raid 0 with examples in linux. With RAID 0 there is no data redundancy as the data is stored in strips but this has better speed.

Steps to configure software raid 1 mirroring in linux with and without spare disk with examples in RHEL, CentOS and other Linux distros using mdadm (see [mdadm command](/mdadm-command-in-linux/)).

Mount filesystem in certain order during reboot one after the other using systemd unit file or /etc/fstab using RequiresMountsFor x-systemd.requires- mounts-for

Step by step guide linux lvm snapshot backup and restore with examples RHEL/CentOS 7/8. Create, merge, extend, remove LVM snapshot. backup root file system

LVM stands for Logical Volume Manager which is made up of Physical Volume, Volume Group ad Logical Volume. It can be easily extended or even reduced at times

Step by Step Guide to configure software raid 4 in Linux using examples. RAID-4 stripes block-sized chunks of data across each drive in the array marked as ..

Steps to create filesystem on a linux partition of on a logical volume using mkfs. Create mount point and mount the filesystem to access and store the data.

Steps to resize root LVM partition. Increase or decrease root logical volume partition size with examples in RHEL/CentOS 7/8 Linux. Extend or shrink root LVM

How to configure iscsi target and initiator multipath SAN on CentOS / RHEL 7 Linux. Configure iscsi target with targetcli and initiator with iscsiadm

What is GlusterFS Tutorial Replication Types of Volumes. Distributed Volume Replicated Volume. RHEL CentOS 8 glusterfs shared storage. gluster file system linux