diff -up util-linux-2.23.2/fdisks/fdisk.c.kzak util-linux-2.23.2/fdisks/fdisk.c

--- util-linux-2.23.2/fdisks/fdisk.c.kzak	2013-07-30 10:39:26.195738131 +0200

+++ util-linux-2.23.2/fdisks/fdisk.c	2015-07-03 10:30:50.378965526 +0200

@@ -34,6 +34,7 @@

 #include "canonicalize.h"

 #include "strutils.h"

 #include "closestream.h"

+#include "sysfs.h"

 #include "fdisksunlabel.h"

 #include "fdisksgilabel.h"

diff -up util-linux-2.23.2/include/sysfs.h.kzak util-linux-2.23.2/include/sysfs.h

--- util-linux-2.23.2/include/sysfs.h.kzak	2013-06-13 09:46:10.400650451 +0200

+++ util-linux-2.23.2/include/sysfs.h	2015-07-03 10:30:50.378965526 +0200

@@ -73,6 +73,8 @@ extern int sysfs_is_partition_dirent(DIR

 extern int sysfs_devno_to_wholedisk(dev_t dev, char *diskname,

             size_t len, dev_t *diskdevno);

+extern int sysfs_devno_is_lvm_private(dev_t devno);

+

 extern int sysfs_scsi_get_hctl(struct sysfs_cxt *cxt, int *h,

 			       int *c, int *t, int *l);

 extern char *sysfs_scsi_host_strdup_attribute(struct sysfs_cxt *cxt,

diff -up util-linux-2.23.2/libblkid/src/blkidP.h.kzak util-linux-2.23.2/libblkid/src/blkidP.h

--- util-linux-2.23.2/libblkid/src/blkidP.h.kzak	2015-07-03 10:29:08.582688645 +0200

+++ util-linux-2.23.2/libblkid/src/blkidP.h	2015-07-03 10:30:50.378965526 +0200

@@ -221,6 +221,7 @@ struct blkid_struct_probe

 #define BLKID_FL_PRIVATE_FD	(1 << 1)	/* see blkid_new_probe_from_filename() */

 #define BLKID_FL_TINY_DEV	(1 << 2)	/* <= 1.47MiB (floppy or so) */

 #define BLKID_FL_CDROM_DEV	(1 << 3)	/* is a CD/DVD drive */

+#define BLKID_FL_NOSCAN_DEV	(1 << 4)        /* do not scan this device */

 /* private per-probing flags */

 #define BLKID_PROBE_FL_IGNORE_PT (1 << 1)	/* ignore partition table */

diff -up util-linux-2.23.2/libblkid/src/partitions/partitions.c.kzak util-linux-2.23.2/libblkid/src/partitions/partitions.c

--- util-linux-2.23.2/libblkid/src/partitions/partitions.c.kzak	2015-07-03 10:29:08.582688645 +0200

+++ util-linux-2.23.2/libblkid/src/partitions/partitions.c	2015-07-03 10:30:50.378965526 +0200

@@ -537,6 +537,8 @@ static int idinfo_probe(blkid_probe pr,

 	if (pr->size <= 0 || (id->minsz && id->minsz > pr->size))

 		goto nothing;	/* the device is too small */

+	if (pr->flags & BLKID_FL_NOSCAN_DEV)

+		goto nothing;

 	rc = blkid_probe_get_idmag(pr, id, &off, &mag;;

 	if (rc != BLKID_PROBE_OK)

@@ -576,8 +578,12 @@ static int partitions_probe(blkid_probe

 	if (!pr || chn->idx < -1)

 		return -EINVAL;

+

 	blkid_probe_chain_reset_vals(pr, chn);

+	if (pr->flags & BLKID_FL_NOSCAN_DEV)

+		return BLKID_PROBE_NONE;

+

 	if (chn->binary)

 		partitions_init_data(chn);

@@ -653,6 +659,8 @@ int blkid_partitions_do_subprobe(blkid_p

 	if (!pr || !parent || !parent->size)

 		return -EINVAL;

+	if (pr->flags & BLKID_FL_NOSCAN_DEV)

+		return BLKID_PROBE_NONE;

 	/* range defined by parent */

 	sz = ((blkid_loff_t) parent->size) << 9;

@@ -707,6 +715,9 @@ static int blkid_partitions_probe_partit

 	blkid_partition par;

 	dev_t devno;

+	if (pr->flags & BLKID_FL_NOSCAN_DEV)

+		goto nothing;

+

 	devno = blkid_probe_get_devno(pr);

 	if (!devno)

 		goto nothing;

@@ -779,7 +790,7 @@ nothing:

 int blkid_probe_is_covered_by_pt(blkid_probe pr,

 				 blkid_loff_t offset, blkid_loff_t size)

 {

-	blkid_probe prc;

+	blkid_probe prc = NULL;

 	blkid_partlist ls = NULL;

 	blkid_loff_t start, end;

 	int nparts, i, rc = 0;

@@ -788,6 +799,9 @@ int blkid_probe_is_covered_by_pt(blkid_p

 		"=> checking if off=%jd size=%jd covered by PT",

 		offset, size));

+	if (pr->flags & BLKID_FL_NOSCAN_DEV)

+		goto done;

+

 	prc = blkid_clone_probe(pr);

 	if (!prc)

 		goto done;

diff -up util-linux-2.23.2/libblkid/src/probe.c.kzak util-linux-2.23.2/libblkid/src/probe.c

--- util-linux-2.23.2/libblkid/src/probe.c.kzak	2015-07-03 10:29:08.583688638 +0200

+++ util-linux-2.23.2/libblkid/src/probe.c	2015-07-03 10:30:50.378965526 +0200

@@ -110,6 +110,7 @@

 #include "blkidP.h"

 #include "all-io.h"

+#include "sysfs.h"

 /* chains */

 extern const struct blkid_chaindrv superblocks_drv;

@@ -714,8 +715,13 @@ int blkid_probe_set_device(blkid_probe p

 	if (pr->size <= 1440 * 1024 && !S_ISCHR(sb.st_mode))

 		pr->flags |= BLKID_FL_TINY_DEV;

+	if (S_ISBLK(sb.st_mode) && sysfs_devno_is_lvm_private(sb.st_rdev)) {

+		DBG(LOWPROBE, blkid_debug("ignore private LVM device"));

+		pr->flags |= BLKID_FL_NOSCAN_DEV;

+        }

+

 #ifdef CDROM_GET_CAPABILITY

-	if (S_ISBLK(sb.st_mode) &&

+	else if (S_ISBLK(sb.st_mode) &&

 	    !blkid_probe_is_tiny(pr) &&

 	    blkid_probe_is_wholedisk(pr) &&

 	    ioctl(fd, CDROM_GET_CAPABILITY, NULL) >= 0)

@@ -892,6 +898,9 @@ int blkid_do_probe(blkid_probe pr)

 	if (!pr)

 		return -1;

+	if (pr->flags & BLKID_FL_NOSCAN_DEV)

+		return 1;

+

 	do {

 		struct blkid_chain *chn = pr->cur_chain;

@@ -1143,6 +1152,8 @@ int blkid_do_safeprobe(blkid_probe pr)

 	if (!pr)

 		return -1;

+	if (pr->flags & BLKID_FL_NOSCAN_DEV)

+		return 1;

 	blkid_probe_start(pr);

@@ -1197,6 +1208,8 @@ int blkid_do_fullprobe(blkid_probe pr)

 	if (!pr)

 		return -1;

+	if (pr->flags & BLKID_FL_NOSCAN_DEV)

+		return 1;

 	blkid_probe_start(pr);

diff -up util-linux-2.23.2/libblkid/src/superblocks/superblocks.c.kzak util-linux-2.23.2/libblkid/src/superblocks/superblocks.c

--- util-linux-2.23.2/libblkid/src/superblocks/superblocks.c.kzak	2015-07-03 10:29:08.586688617 +0200

+++ util-linux-2.23.2/libblkid/src/superblocks/superblocks.c	2015-07-03 10:30:50.378965526 +0200

@@ -335,6 +335,9 @@ static int superblocks_probe(blkid_probe

 	if (!pr || chn->idx < -1)

 		return -EINVAL;

+	if (pr->flags & BLKID_FL_NOSCAN_DEV)

+		goto nothing;

+

 	blkid_probe_chain_reset_vals(pr, chn);

 	DBG(LOWPROBE, blkid_debug("--> starting probing loop [SUBLKS idx=%d]",

@@ -450,6 +453,9 @@ static int superblocks_safeprobe(blkid_p

 	int intol = 0;

 	int rc;

+	if (pr->flags & BLKID_FL_NOSCAN_DEV)

+		return 1;				/* nothing */

+

 	while ((rc = superblocks_probe(pr, chn)) == 0) {

 		if (blkid_probe_is_tiny(pr) && !count)

diff -up util-linux-2.23.2/libblkid/src/verify.c.kzak util-linux-2.23.2/libblkid/src/verify.c

--- util-linux-2.23.2/libblkid/src/verify.c.kzak	2013-06-13 09:46:10.429650699 +0200

+++ util-linux-2.23.2/libblkid/src/verify.c	2015-07-03 10:30:50.378965526 +0200

@@ -112,6 +112,10 @@ blkid_dev blkid_verify(blkid_cache cache

 		   (unsigned long)diff));

 #endif

+	if (sysfs_devno_is_lvm_private(st.st_rdev)) {

+		blkid_free_dev(dev);

+		return NULL;

+	}

 	if (!cache->probe) {

 		cache->probe = blkid_new_probe();

 		if (!cache->probe) {

diff -up util-linux-2.23.2/lib/sysfs.c.kzak util-linux-2.23.2/lib/sysfs.c

--- util-linux-2.23.2/lib/sysfs.c.kzak	2013-06-13 09:46:10.410650536 +0200

+++ util-linux-2.23.2/lib/sysfs.c	2015-07-03 10:32:32.953236879 +0200

@@ -638,6 +638,35 @@ err:

     return -1;

 }

+/*

+ * Returns 1 if the device is private LVM device.

+ */

+int sysfs_devno_is_lvm_private(dev_t devno)

+{

+	struct sysfs_cxt cxt = UL_SYSFSCXT_EMPTY;

+	char *uuid = NULL;

+	int rc = 0;

+

+	if (sysfs_init(&cxt, devno, NULL) != 0)

+		return 0;

+

+	uuid = sysfs_strdup(&cxt, "dm/uuid");

+

+	/* Private LVM devices use "LVM-<uuid>-<name>" uuid format (important

+	 * is the "LVM" prefix and "-<name>" postfix).

+	 */

+	if (uuid && strncmp(uuid, "LVM-", 4) == 0) {

+		char *p = strrchr(uuid + 4, '-');

+

+		if (p && *(p + 1))

+			rc = 1;

+	}

+

+	sysfs_deinit(&cxt);

+	free(uuid);

+	return rc;

+}

+

 int sysfs_scsi_get_hctl(struct sysfs_cxt *cxt, int *h, int *c, int *t, int *l)

 {