DM Resize a DM-Multipath Device: Difference between revisions

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#: <tt>'''# echo 1 > /sys/block/<device>/device/rescan'''</tt>
#: <tt>'''# echo 1 > /sys/block/<device>/device/rescan'''</tt>
# Resize the multipath device.
# Resize the multipath device.
#: <tt>'''# multipathd -k'resize map <multipath_device>''''</tt>
#: <tt>'''# multipathd -k resize map <multipath_device>'''</tt>
# Resize the filesystem.
# Resize the filesystem.
#: <tt>'''# resize2fs /dev/mapper/<multipath_device>'''</tt>
#: <tt>'''# resize2fs /dev/mapper/<multipath_device>'''</tt>

Revision as of 03:31, 28 January 2022

Resize an Online Multipath Device

  1. Resize the LUN on the storage subsystem.
  2. Find and record the device paths to the LUN.
    # multipath -l
  3. Resize the the SCSI block device.
    # echo 1 > /sys/block/<device>/device/rescan
  4. Resize the multipath device.
    # multipathd -k resize map <multipath_device>
  5. Resize the filesystem.
    # resize2fs /dev/mapper/<multipath_device>

Further Reading

  1. Resizing an Online Multipath Device
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