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Clarify that the -r and -R options can be used only to create level 0 dumps.

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Suggested by: phk
MFC after:    3 days
This commit is contained in:
Kirk McKusick 2019-06-14 06:10:15 +00:00
parent aa4a1d3a55
commit e924cb6ff9
1 changed files with 13 additions and 1 deletions
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14
sbin/dump/dump.8
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@ -29,7 +29,7 @@
.\" @(#)dump.8 8.3 (Berkeley) 5/1/95
.\" $FreeBSD$
.\"
.Dd June 11, 2018
.Dd June 13, 2019
.Dt DUMP 8
.Os
.Sh NAME
@ -266,6 +266,12 @@ used to update a remote copy of a level 0 dump,
since the date changes for each dump.
This option sets both dates to the epoch, permitting
rsync to be much more efficient when transferring a dump file.
The
.Fl r
option can be used only to create level 0 dumps.
A dump using the
.Fl r
option cannot be used as the basis for a later incremental dump.
.It Fl R
Be even more rsync-friendly.
This option disables the storage of the actual inode access time
@ -277,6 +283,12 @@ The
.Fl R
option also sets
.Fl r .
The
.Fl R
option can be used only to create level 0 dumps.
A dump using the
.Fl R
option cannot be used as the basis for a later incremental dump.
.It Fl S
Display an estimate of the backup size and the number of
tapes required, and exit without actually performing the dump.