Pvcreate error occurred: DEVICE/DEV/SDB1 not found (or ignored by filtering).

error message:[Root@compute2 ~]# pvcreate-vvv/dev/sdb1 ... DEVICE/DEV/SDB1 not found (or ignored by filtering). No devices to process. Unlocking/run/lock/lvm/p_orphans _undo_flock/run/lock/lvm/p_orphans Lvmcache has no info for vgname "#orphans". Setting Global/notify_dbus to 1 completed:pvcreate-vvv/dev/sdb1
Solution idea:1. See if there are/DEV/SDB1 partitions
If there are no partitions, create the partitions by using the following command: FDISK/DEV/SDB
Attachment: If you want to remove the partition above, you can use DD if=/dev/urandom of=/dev/sdb bs=512 count=64

2. If step 1 is not a problem, take a look at the a/sdb/of "filters" in the "Devices" field in/etc/lvm/lvm.conf. # Configuration Section devices. # How LVM uses block devices. Devices {... # Configuration option devices/filter. # LIMIT The block devices which are by LVM used. # This is a l Ist of regular expressions used to accept or reject block # device path names. Each regex's delimited by a vertical bar ' | ' # (or any character) and are preceded by ' a ' to accept the path, or # by ' R ' To reject the path. The alpha regex in the list to match the # Path are used, producing the ' a ' or ' r ' result for the device. # When multiple path names exist for a block device, if any path name # matches a ' a ' pattern before a ' R ' pattern, then The device is # accepted. If all of the path names match an ' r ' of pattern A, then the # device is rejected. unmatching path names do not affect the accept # or reject decision. If no path names for a device match-a pattern, # then the device is accepted. Be careful mixing ' a ' and ' R ' patterns, #As the combination might produce unexpected results (test changes.) # Run Vgscan after changing the ' filter to regenerate t He cache. # The Use_lvmetad comment for a special case regarding filters. # # Example # Accept every block device: # filter = ' a|. */|" ] # Reject The CDROM drive: # filter = ["r|/dev/cdrom|"] # Work with just loopback, devices, e.g. for testing: # filter = [ "A|loop|", "r|." *|" ] # Accept all loop devices and IDE drives except HDC: # filter = [' a|loop| ', ' r|/dev/hdc| ', ' a|/dev/ide| ', ' r|. *|" ] # Use anchors to be very specific: # filter = [' a|^/dev/hda8$| ', ' r|. */|" ] # This is configuration option has an automatic default value. # filter = [' a|. */|" ] #filter = ["a/sda/", "r/.*/"] filter = ["a/sda/", "a/sdb/", "r/.*/"]