Re: How long should an xfs_freeze take?

[Stephen Lord <lord@xxxxxxx>]

Chris Pascoe wrote:

> Hi,
>
> I'm guessing an xfs_freeze shouldn't take this long, am I correct?
>
> # time xfs_freeze -f /tst1
>
> real    344m40.434s
> user    0m0.000s
> sys     340m40.810s
>
> The system is a Dual CPU P3 Xeon with 1GB RAM (highmem enabled), running
> 2.4.17 CVS, taken on 2002/01/23 (just before the -funsigned-char changes
> went through), with LVM 1.0.2 added (I see the same behaviour with 1.0.1,
> though).
How long freeze takes depends on how much data is dirty in the 
filesystem, it
should take a similar time to an unmount. However, unless this was a 
very large
and dirty filesystem this feels like a long time - although it was all 
system time,
so something was going on.

The spot you kept seeing on the stack does not make much sense, vn_count is
basically an atomic_read.

How repeatable is this? 

Steve