gluster snapshots and XFS shutdowns

Solution In Progress - Updated -

Issue

Gluster's volume snapshots depend heavily on LVM (Logical Volume Manger) layer for taking the snapshots. In fact when a gluster volume's snapshot is taken it is nothing but taking the snapshots of all the bricks of the gluster volume. Gluster snapshots requires thinly provisioned logical volumes to be used as the backend for bricks.

But sometimes, more and more gluster snapshots can lead to lvm thin pool becoming full and cause XFS errors.

Environment

  • RHS-3.0
  • RHGS-3.1

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