diff options
| author | Martin Schulze | 2008-01-27 07:31:06 +0100 |
|---|---|---|
| committer | Karel Zak | 2008-02-15 01:31:50 +0100 |
| commit | 93bf0f285d2479a9cccfa569d0fa70377b531f81 (patch) | |
| tree | 6df4473ade57cd46c5fc563afa5fac708c9bc7f3 /disk-utils | |
| parent | mount: "can't create lock file" message sometimes means failure, sometimes not (diff) | |
| download | kernel-qcow2-util-linux-93bf0f285d2479a9cccfa569d0fa70377b531f81.tar.gz kernel-qcow2-util-linux-93bf0f285d2479a9cccfa569d0fa70377b531f81.tar.xz kernel-qcow2-util-linux-93bf0f285d2479a9cccfa569d0fa70377b531f81.zip | |
mkswap: set UUID for swap space (add -U option)
A friend of mine is looking into the possibility of cloning Debian
(and other) systems automatically and stomped over swap partitions
getting assigned new UUIDs every time the new harddisk is partitioned
and swap is created.
It's essential when partitions are to be recognised by their uuid and
not by their old device path anymore.
Addresses-Ubuntu-Bug: #66637
Signed-off-by: LaMont Jones <lamont@debian.org>
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'disk-utils')
| -rw-r--r-- | disk-utils/mkswap.8 | 6 | ||||
| -rw-r--r-- | disk-utils/mkswap.c | 19 |
2 files changed, 22 insertions, 3 deletions
diff --git a/disk-utils/mkswap.8 b/disk-utils/mkswap.8 index f4661c24a..2f5f0a880 100644 --- a/disk-utils/mkswap.8 +++ b/disk-utils/mkswap.8 @@ -7,7 +7,7 @@ .SH NAME mkswap \- set up a Linux swap area .SH SYNOPSIS -.BI "mkswap [\-c] [\-v" N "] [\-f] [\-p " PSZ "] [\-L " label "] " device " [" size "]" +.BI "mkswap [\-c] [\-v" N "] [\-f] [\-p " PSZ "] [\-L " label "] [\-U " uuid "] " device " [" size "]" .SH DESCRIPTION .B mkswap sets up a Linux swap area on a device or in a file. @@ -156,6 +156,10 @@ when creating the swapspace. Version 0 (-v0) swap space format is no longer supported in 2.5+ kernels. +.TP +.B \-U uuid +Specify the uuid to use. The default is to generate UUIDs. + .SH "SEE ALSO" .BR fdisk (8), .BR swapon (8) diff --git a/disk-utils/mkswap.c b/disk-utils/mkswap.c index bb126726b..e2eafa542 100644 --- a/disk-utils/mkswap.c +++ b/disk-utils/mkswap.c @@ -329,7 +329,7 @@ bit_test_and_clear (unsigned long *addr, unsigned int nr) { static void usage(void) { fprintf(stderr, - _("Usage: %s [-c] [-v0|-v1] [-pPAGESZ] [-L label] /dev/name [blocks]\n"), + _("Usage: %s [-c] [-v0|-v1] [-pPAGESZ] [-L label] [-U UUID] /dev/name [blocks]\n"), program_name); exit(1); } @@ -479,6 +479,7 @@ main(int argc, char ** argv) { char *opt_label = NULL; unsigned char *uuid = NULL; #ifdef HAVE_LIBUUID + unsigned char *opt_uuid = NULL; uuid_t uuid_dat; #endif @@ -523,6 +524,16 @@ main(int argc, char ** argv) { case 'v': version = atoi(argv[i]+2); break; + case 'U': +#ifdef HAVE_LIBUUID + opt_uuid = argv[i]+2; + if (!*opt_uuid && i+1 < argc) + opt_uuid = argv[++i]; +#else + fprintf(stderr, _("%1$s: warning: ignore -U (UUIDs are unsupported by %1$s)\n"), + program_name); +#endif + break; default: usage(); } @@ -535,7 +546,11 @@ main(int argc, char ** argv) { } #ifdef HAVE_LIBUUID - uuid_generate(uuid_dat); + if(opt_uuid) { + if (uuid_parse(opt_uuid, uuid_dat) != 0) + die(_("error: UUID parsing failed")); + } else + uuid_generate(uuid_dat); uuid = uuid_dat; #endif |