doc: describe primitive writeback-rest

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Thomas Schoebel-Theuer 2019-04-04 13:11:45 +02:00 committed by Thomas Schoebel-Theuer
parent f91895acb5
commit 890a162807

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@ -25138,7 +25138,35 @@ resize
\begin_layout Standard
\noindent
The following macros are only meaningful for secondary nodes.
The following macros are only meaningful for resources in primary mode:
\end_layout
\begin_layout Labeling
\labelwidthstring 00.00.0000
\family typewriter
writeback-rest
\family default
Show the amount of data which is already in the transaction logfile, but
has not yet been written back to the underlying disk.
This may be used for estimation of recovery time after a potential primary
crash.
The writeback buffer is explained by the graphics at
\begin_inset CommandInset ref
LatexCommand vref
reference "sec:The-Transaction-Logger"
plural "false"
caps "false"
noprefix "false"
\end_inset
.
\end_layout
\begin_layout Standard
\noindent
The following macros are only meaningful for resources in secondary mode.
By information theoretic limits, they can only tell what is
\emph on
locally known