[Buildd-tools-devel] schroot unionfs support

[Roger Leigh]

On Fri, Mar 13, 2009 at 01:55:49PM -0400, Tim Abbott wrote:
> Hello,
> 
> I've been using the schroot unionfs support from [1] in one of the 
> production environments that I run for around 6 months now, and I've found 
> it to be much more pleasant than the LVM snapshot backend.  The biggest 
> benefits I've seen are much better parallel performance (creating an LVM 
> snapshot takes a few seconds, and is not parallelizable) and much less 
> disk is wasted when one leaks a chroot by failing to run "schroot -e".
> 
> I was thinking about doing the work to update the original patch to 
> current schroot master and include the fixes that Waseem mentioned in his 
> post [2] so that this functionality can be merged.
> 
> But I thought I'd send mail first to inquire whether the work is already 
> being done.

I haven't done any further work on it myself, but I think it's a very
useful addition to schroot which would be way better than LVM
snapshotting.

Some of the points I mentioned in my original reply haven't been
addressed yet, such as how to handle the feature.  Currently, I think
it should be a separate interface class like source chroots which
any other chroot type can implement.  All mountable chroot types (or
the base block-device type) plus directory/plain chroots could usefully
implement this.

I will be very happy to merge this, thanks for reminding me about it!


Regards,
Roger


Regards,
Roger


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