DM Resize a DM-Multipath Device
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Resize an Online Multipath Device
- Resize the LUN on the storage subsystem.
- Find and record the device paths to the LUN.
- # multipath -l
- Resize the the SCSI block device.
- # echo 1 > /sys/block/<device>/device/rescan
- Resize the multipath device.
- # multipathd -k resize map <multipath_device>
- Resize the filesystem (assuming no LVM or DOS partitions are used).
- # resize2fs /dev/mapper/<multipath_device>