Add disk and expand in a Logical Volume no reboot, but not for /root /(boot). Tested in Linux CentOS/RedHat 5.7 /var First add a disk in (VMWare) Scan echo "- - -" > /sys/class/scsi_host/host0/scan fdisk -l fdisk /dev/sdb n,p,1,w Format mkfs -t ext3 /dev/sdb1 Add to lvm pvcreate /dev/sdb1 Add to existing Volume Group vgextend VG_30 /dev/sdb1 Resize the Logical Volume lvresize -L +8GB /dev/mapper/VG_30-LV_VAR Resize to the FS resize2fs -p /dev/mapper/VG_30-LV_VAR
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