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The Friday 2007-01-12 at 10:12 +0100, Primm wrote:

> > Use sync at the command line before pulling the plug. This causes all
> > buffers to be written to all disks.
> >
> 
> Is the sync the same as the sync on NFS? As in setting async make the network 
> run at a reasonable speed?

There is a "sync" mount option (in /etc/fstab) and a sync command. 
Related, but not the same. They seem to be different from the one you 
mention for nfs, but I suppose it can be though as related in meaning.


      async  This  option  allows  the  NFS server to violate the NFS 
             protocol and reply to requests before any changes made by 
             that request have been committed to stable storage (e.g. disc 
             drive).

             Using this option usually improves performance, but at the 
             cost that an unclean server restart (i.e. a crash)  can cause 
             data to be lost or corrupted.

             In releases of nfs-utils upto and including 1.0.0, this 
             option was the default.  In this and future releases, sync is 
             the default, and async must be explicit requested if needed.  
             To help make system adminstrators aware of this change, 
             'exportfs' will issue a warning if neither sync nor async is 
             specified.

- -- 
Cheers,
       Carlos E. R.

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