[root@office ~]# pvcreate -vvvv /dev/mpath/backup1 #lvmcmdline.c:1089 Processing: pvcreate -vvvv /dev/mpath/backup1 #lvmcmdline.c:1092 O_DIRECT will be used #config/config.c:994 Setting global/locking_type to 1 #config/config.c:994 Setting global/wait_for_locks to 1 #locking/locking.c:240 File-based locking selected. #config/config.c:971 Setting global/locking_dir to /var/lock/lvm #libdm-common.c:430 Preparing SELinux context for /var/lock/lvm to system_u:object_r:lvm_lock_t. #libdm-common.c:433 Resetting SELinux context to default value. #config/config.c:977 metadata/pvmetadataignore not found in config: defaulting to n #config/config.c:999 metadata/pvmetadatasize not found in config: defaulting to 255 #config/config.c:999 metadata/pvmetadatacopies not found in config: defaulting to 1 #locking/file_locking.c:235 Locking /var/lock/lvm/P_orphans WB #libdm-common.c:430 Preparing SELinux context for /var/lock/lvm/P_orphans to system_u:object_r:lvm_lock_t. #locking/file_locking.c:141 _do_flock /var/lock/lvm/P_orphans:aux WB #locking/file_locking.c:141 _do_flock /var/lock/lvm/P_orphans WB #locking/file_locking.c:51 _undo_flock /var/lock/lvm/P_orphans:aux #libdm-common.c:433 Resetting SELinux context to default value. #ioctl/libdm-iface.c:2005 dm version OF [16384] #ioctl/libdm-iface.c:2005 dm status (253:3) OF [16384] #device/dev-io.c:495 Opened /dev/mpath/backup1 RO O_DIRECT #device/dev-io.c:268 /dev/mpath/backup1: size is 6291456000 sectors #device/dev-io.c:541 Closed /dev/mpath/backup1 #device/dev-io.c:268 /dev/mpath/backup1: size is 6291456000 sectors #device/dev-io.c:495 Opened /dev/mpath/backup1 RW O_DIRECT #device/dev-io.c:134 /dev/mpath/backup1: block size is 4096 bytes #device/dev-io.c:541 Closed /dev/mpath/backup1 #filters/filter-composite.c:31 Using /dev/mpath/backup1 #device/dev-io.c:495 Opened /dev/mpath/backup1 RW O_DIRECT #device/dev-io.c:134 /dev/mpath/backup1: block size is 4096 bytes #label/label.c:184 /dev/mpath/backup1: No label detected #device/dev-io.c:541 Closed /dev/mpath/backup1 #ioctl/libdm-iface.c:2005 dm status (253:3) OF [16384] #device/dev-io.c:495 Opened /dev/mpath/backup1 RO O_DIRECT #device/dev-io.c:268 /dev/mpath/backup1: size is 6291456000 sectors #device/dev-io.c:541 Closed /dev/mpath/backup1 #device/dev-io.c:268 /dev/mpath/backup1: size is 6291456000 sectors #device/dev-io.c:495 Opened /dev/mpath/backup1 RW O_DIRECT #device/dev-io.c:134 /dev/mpath/backup1: block size is 4096 bytes #device/dev-io.c:541 Closed /dev/mpath/backup1 #filters/filter-composite.c:31 Using /dev/mpath/backup1 #device/dev-io.c:495 Opened /dev/mpath/backup1 RW O_EXCL O_DIRECT #device/dev-io.c:541 Closed /dev/mpath/backup1 #device/dev-io.c:268 /dev/mpath/backup1: size is 6291456000 sectors #device/dev-io.c:495 Opened /dev/mpath/backup1 RW O_DIRECT #device/dev-io.c:134 /dev/mpath/backup1: block size is 4096 bytes #device/dev-io.c:541 Closed /dev/mpath/backup1 #device/dev-io.c:268 /dev/mpath/backup1: size is 6291456000 sectors #device/dev-io.c:495 Opened /dev/mpath/backup1 RW O_DIRECT #device/dev-io.c:134 /dev/mpath/backup1: block size is 4096 bytes #device/dev-io.c:541 Closed /dev/mpath/backup1 #device/dev-io.c:495 Opened /dev/mpath/backup1 RW O_DIRECT #device/dev-io.c:134 /dev/mpath/backup1: block size is 4096 bytes #device/dev-io.c:541 Closed /dev/mpath/backup1 #ioctl/libdm-iface.c:2005 dm status (253:3) OF [16384] #device/dev-io.c:495 Opened /dev/mpath/backup1 RO O_DIRECT #device/dev-io.c:268 /dev/mpath/backup1: size is 6291456000 sectors #device/dev-io.c:541 Closed /dev/mpath/backup1 #device/dev-io.c:268 /dev/mpath/backup1: size is 6291456000 sectors #device/dev-io.c:495 Opened /dev/mpath/backup1 RW O_DIRECT #device/dev-io.c:134 /dev/mpath/backup1: block size is 4096 bytes #device/dev-io.c:541 Closed /dev/mpath/backup1 #filters/filter-composite.c:31 Using /dev/mpath/backup1 #device/dev-io.c:268 /dev/mpath/backup1: size is 6291456000 sectors #config/config.c:994 Setting devices/data_alignment to 0 #config/config.c:994 Setting devices/default_data_alignment to 0 #metadata/metadata.c:126 /dev/mpath/backup1: Setting PE alignment to 128 sectors. #metadata/metadata.c:159 /dev/mpath/backup1: Setting PE alignment offset to 0 sectors. #device/dev-io.c:495 Opened /dev/mpath/backup1 RW O_DIRECT #device/dev-io.c:730 Wiping /dev/mpath/backup1 at sector 8 length 8 sectors #device/dev-io.c:134 /dev/mpath/backup1: block size is 4096 bytes #device/dev-io.c:541 Closed /dev/mpath/backup1 #metadata/metadata.c:1499 Set up physical volume for "/dev/mpath/backup1" with 6291456000 available sectors #label/label.c:203 Scanning for labels to wipe from /dev/mpath/backup1 #device/dev-io.c:495 Opened /dev/mpath/backup1 RW O_DIRECT #device/dev-io.c:134 /dev/mpath/backup1: block size is 4096 bytes #device/dev-io.c:541 Closed /dev/mpath/backup1 #metadata/metadata.c:1508 Zeroing start of device /dev/mpath/backup1 #device/dev-io.c:495 Opened /dev/mpath/backup1 RW O_DIRECT #device/dev-io.c:730 Wiping /dev/mpath/backup1 at sector 0 length 4 sectors #device/dev-io.c:134 /dev/mpath/backup1: block size is 4096 bytes #device/dev-io.c:541 Closed /dev/mpath/backup1 #metadata/metadata.c:1523 Writing physical volume data to disk "/dev/mpath/backup1" #cache/lvmcache.c:1166 lvmcache: /dev/mpath/backup1: now in VG #orphans_lvm2 (#orphans_lvm2) #format_text/format-text.c:1453 Creating metadata area on /dev/mpath/backup1 at sector 8 size 376 sectors #format_text/format-text.c:1523 /dev/mpath/backup1: setting pe_start=384 (orig_pe_start=384, pe_align=128, pe_align_offset=0, adjustment=0) #device/dev-io.c:495 Opened /dev/mpath/backup1 RW O_DIRECT #device/dev-io.c:134 /dev/mpath/backup1: block size is 4096 bytes #format_text/text_label.c:137 /dev/mpath/backup1: Preparing PV label header sVsk4g-FEwG-nQfC-3xqX-Oc3B-Ytee-KH6rFe size 3221225472000 with da1 (384s, 0s) mda1 (8s, 376s) #label/label.c:334 /dev/mpath/backup1: Writing label to sector 1 with stored offset 32. Physical volume "/dev/mpath/backup1" successfully created #locking/file_locking.c:74 Unlocking /var/lock/lvm/P_orphans #locking/file_locking.c:51 _undo_flock /var/lock/lvm/P_orphans #device/dev-io.c:541 Closed /dev/mpath/backup1 [root@office ~]# dd if=/dev/mpath/backup1 bs=1k count=1 | cat -v - ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@LABELONE^A^@^@^@^@^@^@^@,M->M-aM-R ^@^@^@LVM2 001sVsk4gFEwGnQfC3xqXOc3BYteeKH6rFe^@^@^@^@M-n^B^@^@^@^@^C^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^P^@^@^@^@^@^@^@M-p^B^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@1+0 records in 1+0 records out 1024 bytes (1.0 kB) copied, 0.01024 seconds, 100 kB/s [root@office ~]# pvdisplay /dev/mpath/backup1 "/dev/mpath/backup1" is a new physical volume of "2.93 TB" --- NEW Physical volume --- PV Name /dev/mpath/backup1 VG Name PV Size 2.93 TB Allocatable NO PE Size (KByte) 0 Total PE 0 Free PE 0 Allocated PE 0 PV UUID sVsk4g-FEwG-nQfC-3xqX-Oc3B-Ytee-KH6rFe