lvm – 煎炸熊の記事本

Logical Volume Management is a vast improvement over standard partitioning schemes. Among many other things, it allows you to decrease the size of a volume without recreating it completely. Here’s how.

RHEL / CentOS : How to rebuild LVM from Archive (metadata backups)

CentOS, Linux No Responses »

7 月 262018

Source: RHEL / CentOS : How to rebuild LVM from Archive (metadata backups)

Problem : The filesystem was corrupted and the LVM volumes could not be mounted, with the lvm partitions are lost.

LVM error "WARNING: Inconsistent metadata found" – How to resolve in CentOS / RHEL

CentOS, Linux No Responses »

7 月 262018

Source: LVM error "WARNING: Inconsistent metadata found" – How to resolve in CentOS / RHEL

What is inconsistent metadata error

When LVM performs pretty much any action, it first scans all available physical volumes and refreshes its view of the volume group layout. Because multiple physical volumes can exist in the same volume group, it is possible to end up in a situation where these PVs in the same VG reflect different information. In most cases, this results in the warning message “Inconsistent metadata found” error while executing any command like vgscan, pvscan. For example :

CentOS / RHEL : How to assemble a software RAID in Rescue mode

CentOS, Linux No Responses »

7 月 252018

Source: CentOS / RHEL : How to assemble a software RAID in Rescue mode

mdadm (multiple devices admin) is an extremely useful tool for running RAID systems. It’s is a tool for creating, managing, and monitoring RAID devices using the md driver. It can be used as a replacement for the raidtools, or as a supplement. The pos describes a way to assemble a software RAID in rescue mode.