Duncan Booth wrote:
Tres Seaver wrote:
Mark Gibson wrote:
I know zope makes a copy of Data.fs before packing. Is it possible to specify a location other than <zope>/var to place that copy? Actually, it makes a *new* file when packing, and then unlinks the old file and re-links the copy under its name after finishing the pack successfully. If you are looking to "spread the love" across multiple partitions, you can symlink the original file into a directory on another drive / partition, and then do the pack there. One the pack completes, you can move or copy the packed version back to the original directory.
I recently had to move a fairly large Data.fs onto a different partition, but just copying it would have involved downtime (at least for authoring) that I wanted to avoid.
The solution I came up with was to create a var folder on the new partition symlinking back to Data.fs in the original location. Then I switched ZEO to using the var on the new partition and packed the database. After packing the database was on the new partition with no downtime apart from a single ZEO restart.
Nice. I should note that DirectoryStorage (http://dirstorage.sf.net) has excellent replication support which make things like moving live Zope instances from one partition to another one w/o lots of downtime almost trivial. Philipp