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I have been trying to get ZFS on Linux to read / process the vdev_id.conf file and give me a /dev/disk/by-vdev directory, to no avail.

I have a SAS HBA with redundant connectivity to several hard drives.

I have read the documentation but I am not quite sure what to put in the PCI_ID column.

I have left everything defaulted out, and still I do not even see the directory "by-vdev".

I run the command "udevadm trigger", but I get to errors or output, just a return.

This is my file:

      multipath yes

        #       PCI_SLOT HBA PORT  CHANNEL NAME
        channel 85:00.0  1         A
        channel 85:00.0  0         B
        channel 86:00.0  1         A
        channel 86:00.0  0         B

I have enabled multipathd, removed the blacklist-all directive with "mpathconf --enable" command, and got the mpath devices in /dev/mapper.

Not sure where to go from here to populate the by-vdev directory.

OS is CentOS 7.3 with Kernel 4.8

Thanks for any help given!

Sam Alsalem
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  • Huh? What are you talking about? – ewwhite Jan 23 '17 at 06:01
  • What is vdev_id.conf? What file is "This is my file"? Does [this](https://github.com/zfsonlinux/pkg-zfs/wiki/HOWTO-install-EL7-(CentOS-RHEL)-to-a-Native-ZFS-Root-Filesystem) or [this](https://github.com/zfsonlinux/zfs/issues/5191) help you in any way? – airhuff Feb 02 '17 at 20:31
  • vdev_id.conf is a file that maps logical names to physical devices. In a complex configuration, you can map multiple paths to one logical name. The documentation and comments in the code are not clear enough for me to get how to structure it. – Sam Alsalem Apr 05 '17 at 07:23

1 Answers1

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After you setup your conf file you need to do a udevadm trigger for your new devices to show up it will make a diretory under /dev/disk called by-vdev that will have the alias names for all your disk in it.

Tim Schnedler
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