On Thu, 17 Sep 1998, Troy Benjegerdes wrote:

> On Wed, 16 Sep 1998, Peter J. Braam wrote:
> 
> > Troy,
> > 
> > Whoops: I think you have hosed your volume (I _did_ warn you to first make
> > the cache bigger).   This is perhaps the buffer cache corruption which
> > will be gone in 4.8.
> 
> Heh... I thought you meant make the cache big or performance will be bad
> ;)    I'm happy to hear that this is a known bug.. So basically, the moral
> of the story is 'Don't do anything while cfs wd that will come anywhere
> near filling the cache' ?

Almost:  MORAL

"When disconnected or write disconnected, don't overflow the client cache."

Server corruption can result!


> 
> Btw, I don't have anything on this volume except the untarred linux stuff.
> Also, what's the ETA on 4.8? Thanks again.

Unknown... 4.7.1 has the code in, but for the server quite a lot still
needs to be debugged probably (although it does work..). 


> 
> > 
> > What I would do is 
> > 
> > 1. copy valuable stuff elsewhere - on client
> > 2. purgevol_rep volname 
> > 3. createvol_rep .........
> > 
> > - Peter -
> > 
> > On Wed, 16 Sep 1998, Troy Benjegerdes wrote:
> > 
> > > On Wed, 16 Sep 1998, Peter J. Braam wrote:
> > > 
> > > > Yes, this is a known factor of 50 slower.  But try it after 
> > > > 
> > > > cfs wd (make your cache large first).  I think you'll be pretty impressed.
> > > > 
> > > > - Peter -
> > > > 
> > > 
> > > Well, it is faster, but I prefer correct over fast ;)
> > > 
> > > I first tried this trick with the original 30 MB cache and tried to rm -rf
> > > the original linux tree I untarred. It was quite fast until I started
> > > getting 'no space left on device' errors. So, thinking the cache was to
> > > small I re-inited venus with a 100MB cache, and the rm worked ..
> > > 
> > > Now I get these errors:
> > > I don't know where the original error was (it scrolled by too fast)
> > > 
> > > (and yes, I have clog'd in and have tokens..)
> > > 
> > > tar: linux/include/asm-arm/limits.h: Could not create file: Not a directory
> > > linux/include/asm-arm/vga.h
> > > tar: linux/include/asm-arm/vga.h: Could not create file: Not a directory
> > > linux/include/asm-arm/mm-init.h
> > > tar: linux/include/asm-arm/mm-init.h: Could not create file: Not a directory
> > > linux/include/asm-arm/mman.h 
> > > tar: linux/include/asm-arm/mman.h: Could not create file: Not a directory
> > > linux/include/asm-arm/param.h       
> > > 
> > > I haven't so far been able to get cfs wd working reliably. It seems to
> > > work for a small to medium amount of stuff, but not for large amounts of
> > > activity.
> > > 
> > > Any hints on what to do?
> > > 
> > > --------------------------------------------------------------------------
> > > | Troy Benjegerdes    |    troybenj_at_iastate.edu    |    hozer_at_drgw.net   |
> > > |    Unix is user friendly... You just have to be friendly to it first.  |
> > > | This message composed with 100% free software.    http://www.linux.org |
> > > --------------------------------------------------------------------------
> > > 
> > 
> 
> --------------------------------------------------------------------------
> | Troy Benjegerdes    |    troybenj_at_iastate.edu    |    hozer_at_drgw.net   |
> |    Unix is user friendly... You just have to be friendly to it first.  |
> | This message composed with 100% free software.    http://www.linux.org |
> --------------------------------------------------------------------------
>