.TH CHECKINDEX 8
.SH NAME
checkindex \- check the integrity and optionally fix a Venti index
.SH SYNOPSIS
.B venti/checkindex
[
.B -f
]
[
.B -B
.I blockcachesize
]
.I venti.config
.I tmp
.SH DESCRIPTION
.I Checkindex
examines the Venti index described in
.IR venti.config .
The program detects various error conditions including:
blocks that are not indexed, index entries for blocks that do not exist,
and duplicate index entries.
If requested, an attempt can be made to fix errors that are found.
.PP
The
.I tmp
file, usually a disk partition, must be large enough to store a copy of the index.
This temporary space is used to perform a merge sort of index entries
generated by reading the arenas.
.PP
Option to 
.I checkindex
are:
.TP
.BI -B " blockcachesize
The amount of memory, in bytes, to use for caching raw disk accesses while running
.IR checkindex .
The default is 8k.
The units for the size can be specified by appending
.LR k ,
.LR m ,
or
.LR g
to indicate kilobytes, megabytes, or gigabytes respectively.
.TP
.B -f
Attempt to fix any errors that are found.
.SH SOURCE
.B /sys/src/cmd/venti
.SH "SEE ALSO"
.IR venti (8),
.IR buildindex (8),
.IR venti.conf (6)