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qemu-img: clarify src_cache option documentation

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The source cache option takes the same values as the cache option.  The
documentation reads a little strange because it starts with "In contrast
the src_cache option ...".  The fact that this is comparing with the
previous documented option (the 'cache' option) is implicit.  Readers
may be confused, especially if they jump to src_cache without reading
cache documentation first.

Suggested-by: Jeff Nelson <jenelson@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2014-09-02 11:01:02 +01:00
parent 1053587c3f
commit bb87fdf871
2 changed files with 5 additions and 3 deletions
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3
qemu-img.c
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@ -95,7 +95,8 @@ static void QEMU_NORETURN help(void)
" 'cache' is the cache mode used to write the output disk image, the valid\n" " 'cache' is the cache mode used to write the output disk image, the valid\n"
" options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n"
" 'directsync' and 'unsafe' (default for convert)\n" " 'directsync' and 'unsafe' (default for convert)\n"
" 'src_cache' in contrast is the cache mode used to read input disk images\n" " 'src_cache' is the cache mode used to read input disk images, the valid\n"
" options are the same as for the 'cache' option\n"
" 'size' is the disk image size in bytes. Optional suffixes\n" " 'size' is the disk image size in bytes. Optional suffixes\n"
" 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),\n" " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),\n"
" 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are\n" " 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are\n"

5
qemu-img.texi
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@ -73,8 +73,9 @@ specifies the cache mode that should be used with the (destination) file. See
the documentation of the emulator's @code{-drive cache=...} option for allowed the documentation of the emulator's @code{-drive cache=...} option for allowed
values. values.
@item -T @var{src_cache} @item -T @var{src_cache}
in contrast specifies the cache mode that should be used with the source specifies the cache mode that should be used with the source file(s). See
file(s). the documentation of the emulator's @code{-drive cache=...} option for allowed
values.
@end table @end table
Parameters to snapshot subcommand: Parameters to snapshot subcommand: