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If you have a lost device that is no longer used, but the device data is available to the lvm,...How to: Change LVM Cache / dm-cache mode
LVM2 has a built in cache feature to use slow disk with SSDs. Although, by default, it changes...How to: Change user from root with CageFS
To change your ssh console to an user other than root under cagefs, use the following: su -...How to: Install nslookup, host or dig
Error Example: -bash: host: command not found If your installation doesn't come with...How to: Mount raw VM disk images (KVM/Xen/VMW)
You can use linux loop device to mount the raw/disk images on the host. First, setup the loop...LVM Cheatsheet
To install LVM2 in CentOS/Redhat servers: yum install lvm2 1. Add a partition to physical...mdadm array - auto read only - resync pending
# cat /proc/mdstat Personalities : [raid1] md127 : active (auto-read-only) raid1 sde1...Recover/Repair fstab on Read Only File System
If you ended up a read only file system error on an fstab error, you may use the following to...[957833.048873] EXT4-fs warning (device dm-0): ext4_dx_add_entry:2016: Directory index full!
A dedicated server customer came with an error of failed WHM login. When I tried to enter, I...