Jump to content


Photo

Sluggish mounting of SAN volume due to FSCK process


  • Please log in to reply
1 reply to this topic

#1 Eric Newbauer

Eric Newbauer

    Advanced Member

  • KB Moderators
  • PipPipPip
  • 259 posts

Posted 17 August 2006 - 01:51 PM

Symptom
You occasionally see unexplained longer than normal mount time and/or performance issues on certain SAN volumes.

Resolution
If OS X detects a problem in the file structure of a volume it may initiate a diagnostic and repair routine called fsck (File System Check). This will run in the background, but may cause longer than normal mount time (especially when mounting in a write mode) and/or sluggish performance of some SAN volumes. This may happen after you have experienced a workstation crash (caused by a power outage, for example), or any time the OS detects a problem in the file structure. If OS X is running fsck on a SAN volume, SANmp may not let you mount or unmount the volume.

To determine if fsck is running, do the following while SANmp has the volume mounted (or while attempting to mount the problematic volume):

1. Launch Activity Monitor (Applications>Utilities>Activity Monitor).
2. In the Monitor menu choose Show Activity Monitor. This window may already be open after you launch the application.
3. In the pop up menu at the top right of the Activity Monitor, choose "All Processes."
4. Under the column Process Name look for "fsck."
5. If you find that fsck is running it is appropriate to allow it to finish running. This may take a few minutes or a couple hours depending on the size of the volume.

Edited by Eric Newbauer, 30 July 2010 - 04:43 PM.

Eric Newbauer, SNS Moderator
----
Learn about our SAN/NAS shared media storage products
Follow Studio Network Solutions on Twitter

#2 SNSjason

SNSjason

    Advanced Member

  • KB Moderators
  • PipPipPip
  • 37 posts

Posted 14 February 2012 - 02:06 PM

In versions of SANmp since 4.0, the user will be presented with a dialog explaining that fsck must be run on the volume, and providing the option to stop mounting instead of starting the process.