Table of ContentsView in Frames

What to do if your LUNs go offline

When no space is available for writes, thinly provisioned LUNs go offline to preserve data integrity. LUNs can run out of space for several reasons. The following table contains a list of what to check for.

  What you can do.
If the aggregate is full, you can:
  • Add more disks. See the Clustered Data ONTAP Physical Storage Management Guide for more information.
  • Use the volume modify command to shrink a volume that has available space. See the man page for this command or the Clustered Data ONTAP Logical Storage Management Guide for more information.
  • If you have space-reserved volumes that have available space change the volume space guarantee to none or file with the volume modify command. For more information, see the Clustered Data ONTAP Logical Storage Management Guide.
If your volume is full but there is space available in the containing aggregate, you can:
  • For space reserved volumes: Use the volume modify command to increase the size of your volume. See the man page for this command or the Clustered Data ONTAP Logical Storage Management Guide for more information.
  • For thinly provisioned volumes: Use the volume modify command to increase the maximum size of your volume. If volume autogrow is not enabled, use volume modify -autogrow-mode to enable it.
  • Delete Snapshot copies manually with the volume snapshot delete command or use the volume snapshot autodelete modify command to automatically delete Snapshot copies. See the man page for this command or the Clustered Data ONTAP Data Protection Guide for more information.