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diff -up util-linux-2.23.2/misc-utils/wipefs.8.kzak util-linux-2.23.2/misc-utils/wipefs.8
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--- util-linux-2.23.2/misc-utils/wipefs.8.kzak 2014-09-24 10:41:31.061930168 +0200
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+++ util-linux-2.23.2/misc-utils/wipefs.8 2014-09-24 10:46:30.142783728 +0200
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@@ -37,6 +37,11 @@ table will still be visible by another m
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When used with option \fB-a\fR, all magic strings that are visible for libblkid are
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erased.
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+Note that by default
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+.B wipefs
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+does not erase nested partition tables on non-whole disk devices. The option
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+\-\-force is required.
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+
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.SH OPTIONS
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.TP
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.BR \-a , " \-\-all"
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diff -up util-linux-2.23.2/misc-utils/wipefs.c.kzak util-linux-2.23.2/misc-utils/wipefs.c
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--- util-linux-2.23.2/misc-utils/wipefs.c.kzak 2014-09-24 10:41:31.061930168 +0200
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+++ util-linux-2.23.2/misc-utils/wipefs.c 2014-09-24 10:50:07.728859738 +0200
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@@ -332,7 +332,7 @@ static void rereadpt(int fd, const char
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static struct wipe_desc *
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do_wipe(struct wipe_desc *wp, const char *devname, int noact, int all, int quiet, int force)
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{
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- int flags, reread = 0;
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+ int flags, reread = 0, need_force = 0;
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blkid_probe pr;
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struct wipe_desc *w, *wp0;
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int zap = all ? 1 : wp->zap;
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@@ -365,6 +365,15 @@ do_wipe(struct wipe_desc *wp, const char
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if (!wp->on_disk)
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continue;
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+ if (!force
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+ && wp->is_parttable
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+ && !blkid_probe_is_wholedisk(pr)) {
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+ warnx(_("%s: ignore nested \"%s\" partition "
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+ "table on non-whole disk device."), devname, wp->type);
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+ need_force = 1;
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+ continue;
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+ }
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+
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if (zap) {
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do_wipe_real(pr, devname, wp, noact, quiet);
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if (wp->is_parttable)
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@@ -377,6 +386,9 @@ do_wipe(struct wipe_desc *wp, const char
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warnx(_("%s: offset 0x%jx not found"), devname, w->offset);
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}
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+ if (need_force)
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+ warnx(_("Use the --force option to force erase."));
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+
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fsync(blkid_probe_get_fd(pr));
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if (reread)
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