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December 17, 2015 06:48
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Extend LVM with new logical sdaX disk. Online, hot, without restart.
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| #!/bin/sh | |
| LV=`lvs | grep -v swap | sed -re "s/^[ ]+//;s/[ ]+/ /g" | cut -d" " -f1 | tail -n+2` | |
| VG=`lvs | grep -v swap | sed -re "s/^[ ]+//;s/[ ]+/ /g" | cut -d" " -f2 | tail -n+2` | |
| if [ "$1" = "" ]; then | |
| echo specify /dev/sda? | |
| exit | |
| fi | |
| echo Extending /dev/mapper/$VG-$LV using $1 as source space | |
| pvcreate $1 | |
| vgextend $VG $1 | |
| lvextend -l +100%FREE /dev/mapper/$VG-$LV | |
| resize2fs /dev/mapper/$VG-$LV | |
| df -h /dev/mapper/$VG-$LV |
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If you are using VMWare and adding space to existing disk, issue as root
to rescan disk for changes (dmesg must say sda: detected capacity change from X to Y)
after that,
make partition using cfdisk to make this disk as logical, 8e type (for LVM)