On 4/5/19 8:26 AM, Magnus Hagander wrote:
>
>
> On Thu, Apr 4, 2019 at 11:14 PM Daniel Gustafsson <daniel@yesql.se
> <mailto:daniel@yesql.se>> wrote:
>
> Reading the pg_upgrade reference page, I get the feeling that one of the
> bullets under "Reverting to old cluster" is a bit thin on detail to
> be helpful
> to newcomers:
>
> "If you ran pg_upgrade with --link, the data files are shared
> between the
> old and new cluster. If you started the new cluster, the new
> server has
> written to those shared files and it is unsafe to use the old
> cluster."
>
> This is perfectly correct, but it fails to provide information on
> what to do
> next in case reverting is in fact what the user wants. The attached
> patch adds
> a short sentence saying the old cluster should be restored from
> backups at this
> point.
>
>
> Let's have two non-english natives discuss it :), but wouldn't it sound
> better with "in this case" than "at this point"? And as a really small
> nitpick, restore from backup, rather than backups?
I would go with:
"If you need to restore the old cluster, you will have to do so using
backups that you took prior to the upgrade."
Or if you want to be overly verbose:
"If you need to restore the old cluster, you will have to do so using
backups that you made prior to the upgrade as the --link does not create
a copy of the old cluster files."
Jonathan