[mythtv] Detection of shared disks in storage groups

[Chris Pinkham]

* On Sat Dec 02, 2006 at 11:43:28AM -0800, Gregorio Gervasio, Jr. wrote:
> In mythbackend/backendutil.cpp, BackendQueryDiskSpace has a 16KB fudge
> factor for the total space when detecting shared disks:

I put that in because my NFS clients mounting using 8KB read/write sizes
see the following:

taz:/taz/video1      288435168 161252104 127183064  56% /taz/video1
taz:/taz/video2      115380192  52464544  62915648  46% /taz/video2
taz:/taz/video3       76920416  59044056  17876360  77% /taz/video3

While on the fileserver, I get this:

/dev/hdc1            288435168 161252120 127183048  56% /taz/video1
/dev/hdb1            115380192  52464548  62915644  46% /taz/video2
/dev/hdd1             76920416  59044056  17876360  77% /taz/video3

So I'm seing a difference of 16KB on video1, 4KB on video2 and video3
matches exactly.

> Dir: slave1.home:/home/mythtv/store.v
>      Location: Local
>      Drive ID: 1
>      TotalKB : 397553664
>      UsedKB  : 176041984
>      FreeKB  : 221511680
> 
> Dir: slave2.home:/home/mythtv/store.v
>      Location: Remote
>      Drive ID: 2
>      TotalKB : 397541376
>      UsedKB  : 176029696
>      FreeKB  : 221511680
> 
> ie, the size discrepancy is 12288KB.  Don't know if it matters but the

That's pretty big.

>         I'm not sure what problems this will cause but just in case,
> I've bumped up the fudge factor in my local tree.

I don't think it will matter much, but in your case, the usedKB is
off by that same amount, did you adjust the fudge on that also?

What did you bump it up to?

--
Chris