Re: block-level incremental backup

Due to the inherent nature of pg_basebackup, the incremental backup also

allows taking backup in tar and compressed format. But, pg_combinebackup

does not understand how to restore this. I think we should either make

pg_combinebackup support restoration of tar incremental backup or restrict

taking the incremental backup in tar format until pg_combinebackup

supports the restoration by making option '--lsn' and '-Ft' exclusive.

It is arguable that one can take the incremental backup in tar format, extract

that manually and then give the resultant directory as input to the

pg_combinebackup, but I think that kills the purpose of having

pg_combinebackup utility.

Thoughts?

Regards,

Jeevan Ladhe