Home / server / Questions / 255716
Accepted
dtoubelis
Asked: 2011-04-05 18:42:26 +0800 CST

Is remounting same file system with different options disruptive for current operations?

  • 772

I want to remount a file system with optimized options (noatime,nobarrier,etc.) on SLES11. I was going to do it by updating /etc/fstab first and then do something like mount -o remount /srv/share. The problem is that there are images of several active virtual machines on this file system exported via NFS and I was thinking if remount can be done without shutting them down. So is remount operation disruptive? Have anyone ever tried something like this before? What was the outcome?

linux mount filesystems

1 Answers

  1. Best Answer

    I just did something similar and it had no discernible effect on the remote host. I say: go for it.

    What I did:

    • hostA (client) mounts hostB (server) via NFS: mount hostB:/share /share
    • on hostA the following command was run: ( cd /bigdata && tar cf - . ) | ( cd /share && tar xvf - )
    • hostB the following command was run: mount -o remount,noatime /share

    I saw no problems, no log messages.

    • 6