Error "resize2fs: Remote I/O error While checking for on-line resizing support"

Products

• VMware vSphere ESXi

Issue/Introduction

• Trying to resize the guest file system in a Linux VM results in the error

  resize2fs: Remote I/O error While checking for on-line resizing support

Cause

The VM was recently reverted to snapshot or storage vMotioned which changes the support of WRITE_SAME and UNMAP SCSI commands. The guest operating system did not refresh granularity from VSCSI and attempted to use WRITE_SAME with UNMAP when this operation was not supported.

Resolution

Power cycle the guest operating system and perform the file system resize operation prior to any snapshot or storage vMotion.

Alternatively, rescan the logical drive within the guest file system prior to performing the file system resize.

Additional Information

If the behavior persists after following the resolution steps, engage the specific Guest OS vendor for further investigation of the operating system's failure to handle SCSI command support changes.