Re: [Libguestfs] [PATCH 1/1] tools: add '--blocksize' option for C-based tools

diff --git a/align/scan.c b/align/scan.c index b9f29868c..5a456d3d6 100644 --- a/align/scan.c +++ b/align/scan.c @@ -90,6 +90,8 @@ usage (int status) " -c|--connect uri Specify libvirt URI for -d option\n" " -d|--domain guest Add disks from libvirt guest\n" " --format[=raw|..] Force disk format for -a option\n" + " --blocksize[=512|4096]\n" + " Set sector size of the disk for -a option\n" " --help Display brief help\n" " -P nr_threads Use at most nr_threads\n" " -q|--quiet No output, just exit code\n"

@@ -119,6 +121,7 @@ main (int argc, char *argv[]) { "connect", 1, 0, 'c' }, { "domain", 1, 0, 'd' }, { "format", 2, 0, 0 }, + { "blocksize", 2, 0, 0 }, { "help", 0, 0, HELP_OPTION }, { "long-options", 0, 0, 0 }, { "quiet", 0, 0, 'q' },

diff --git a/align/virt-alignment-scan.pod b/align/virt-alignment-scan.pod index 19953546e..21b5339e0 100644 --- a/align/virt-alignment-scan.pod +++ b/align/virt-alignment-scan.pod @@ -162,6 +162,18 @@ If you have untrusted raw-format guest disk images, you should use this option to specify the disk format. This avoids a possible security problem with malicious guests (CVE-2010-3851). +=item B<--blocksize=512> + +=item B<--blocksize=4096> + +=item B<--blocksize> + +This parameter sets the sector size of the disk image. Similar to +I<--format> option it affects all subsequent I<-a> options. Using +I<--blocksize> with no argument switches disk sector size to the +default value which usually 512 bytes. See also +L<guestfs(3)/guestfs_add_drive_opts>. + =item B<-P> nr_threads