A curiosity question regarding torn pages: How does this work on file systems that don't write in-place, but instead always do copy-on-write?
My example would be Sun's ZFS file system (In Solaris & BSD). Because of its "snapshot & rollback" functionality, it never writes a page in-place, but instead always copies it to another place on disk. How does this affect the corruption caused by a torn write? Can we end up with horrible corruption on this type of filesystem where we wouldn't on normal file systems, where we are writing to a previously zeroed area on disk? Sorry if this is a stupid question... Hopefully somebody can reassure me that this isn't an issue. -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
