Disk management

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Physical volumes / Partitions

Rescan scsi bus: 

echo "- - -" >> /sys/class/scsi_host/host0/scan

Rescan a disk after resizing it: 

echo 1 > /sys/block/sdb/device/rescan

Rescan a physical volume: 

pvresize /dev/sdb

To manage a large disk (>2TB), use parted.

Logical volumes / filesystems

Resize jfs filesystem

lvresize --size +5G /dev/vg0/lv0
mount -o remount,resize /dev/vg0/lv0

Resize ext filesystem

lvresize --size +5G /dev/vg0/lv0
resize2fs /dev/vg0/lv0
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