Thanks! Re: unionfs on CURRENT for read only OK?

Chad Leigh -- Shire.Net LLC chad at shire.net
Thu Jul 15 18:40:18 PDT 2004


On Jul 15, 2004, at 4:57 PM, Daniel Eriksson wrote:

> Chad Leigh wrote:
>
>> The man pages for unionfs basically say to avoid it as it has
>> problems.
>>    However, I was wondering about people's experience with it
>> for read
>> only mounts.
>
> The nullfs man page says mostly the same thing, and I'm using it 
> extensively
> on one of my servers (200+ rw mounts) without any problems (yet). I've 
> been
> running like this for 10 days now using an up-to-date 5-CURRENT. 
> Writes are
> done both to the underlying filesystem and through the nullfs mount, 
> but
> most of the access is read (10-to-1 ratio for read-vs-write probably).
>
> And to make it even more interesting the underlying filesystems reside 
> on a
> mixture of "old" vinum arrays, ataraid arrays and single discs.
>
> I do have some problems, but I had them even before I started using
> mount_nullfs so they should not be related.

Thanks  to all who replied.  Yes, I was thinking of nullfs.  Sorry.  I 
will give it a try and I appreciate the responses from everyone.

Thanks
Chad



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