drbdadm not creating block device

Asked Aug 22 '18 at 19:00

Active Aug 22 '18 at 19:00

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We are in process of building active-passive cluster via DRBD installed in Centos-7.4 which running kernel-3.10.0-862.el7. While creating cluster with drbadm is unable to create a volume and giving below error. Can you please help me out.

open(/dev/vdb) failed: Invalid argument
could not open with O_DIRECT, retrying without
'/dev/vdb' is not a block device!
open(/dev/vdb) failed: Invalid argument
could not open with O_DIRECT, retrying without
'/dev/vdb' is not a block device!
Command 'drbdmeta 0 v08 /dev/vdb internal create-md' terminated with exit code 20

asked Aug 22 '18 at 19:00

user5016380

`strace` output ? – KamilCuk Aug 22 '18 at 19:15
No, this is the output of "drbdadm create-md devclu01" – user5016380 Aug 22 '18 at 19:31
He's asking you to provide the output from an `strace` on the command you're running. – Matt Kereczman Aug 23 '18 at 14:07
What does `lsblk` look like? – Matt Kereczman Aug 23 '18 at 14:08
Hi, The lsblk status is NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT fd0 2:0 1 4K 0 disk sda 8:0 0 100G 0 disk ├─sda1 8:1 0 300M 0 part /boot └─sda2 8:2 0 90.7G 0 part ├─centos-root 253:0 0 60.9G 0 lvm / └─centos-swap 253:1 0 500M 0 lvm [SWAP] sr0 11:0 1 4.2G 0 rom loop0 7:0 0 4.2G 0 loop /repo – user5016380 Aug 23 '18 at 16:05

drbdadm not creating block device

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