Installer boot error '/dev/root' does not exist

[tasket]

Qubes OS version (e.g., R3.1):

R3.2rc1

Expected behavior:

Installer iso on USB stick boots up with access to attached USB drives.

Actual behavior:

Boot process stops at '/dev/root does not exist' and drops to rescue CLI.
The boot drive exists as /dev/sdb, but no partitions recognized... partx /dev/sdb says its unreadable.
Connecting other USB sticks results in similar behavior: /dev/sdc is enumerated as sdc1, etc. but those partitions are unreadable.

From dmesg:

scsi 6:0:0:0: Direct-Access    Samsung Flash Drive    1100 PQ: 0 ANSI: 6
sd 6:0:0:0: alua: supports implicit and explicit TPGS
sd 6:0:0:0: alua: No target port descriptors found
sd 6:0:0:0: alua: Attach  failed (-22)
sd 6:0:0:0: Failed to add device handler: -22
sd 6:0:0:0: [sdb] ...several lines with drive size and flags...
(trace dump occurs)

Installer can be booted from DVD, but still cannot access USB sticks.

Fedora 23 installer does not have this issue!

Steps to reproduce the behavior:

Boot from Qubes R3.2rc1 iso on USB stick

General notes:

Probably caused by 'alua' module. See thread in qubes-users...
https://groups.google.com/d/msgid/qubes-users/857c13c6-f335-5e02-0758-e2b6c4904d9a%40openmailbox.org

---

Related issues:

[marmarek]

Automated announcement from builder-github

The package kernel-devel-4.4.14-10.pvops.qubes has been pushed to the r3.2 testing repository for the Fedora fc23 template.
To test this update, please install it with the following command:

sudo yum update --enablerepo=qubes-vm-r3.2-current-testing

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package kernel-devel-4.4.14-10.pvops.qubes has been pushed to the r3.2 testing repository for the Fedora fc23 template.
To test this update, please install it with the following command:

sudo yum update --enablerepo=qubes-vm-r3.2-current-testing

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package kernel-devel-4.4.14-10.pvops.qubes has been pushed to the r3.2 testing repository for the Fedora fc24 template.
To test this update, please install it with the following command:

sudo yum update --enablerepo=qubes-vm-r3.2-current-testing

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package kernel-devel-4.4.14-10.pvops.qubes has been pushed to the r3.2 testing repository for the Fedora fc24 template.
To test this update, please install it with the following command:

sudo yum update --enablerepo=qubes-vm-r3.2-current-testing

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package kernel-4.4.14-10.pvops.qubes has been pushed to the r3.2 testing repository for dom0.
To test this update, please install it with the following command:

sudo qubes-dom0-update --enablerepo=qubes-dom0-current-testing

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package kernel-4.4.14-10.pvops.qubes has been pushed to the r3.2 testing repository for dom0.
To test this update, please install it with the following command:

sudo qubes-dom0-update --enablerepo=qubes-dom0-current-testing

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package kernel-devel-4.4.14-11.pvops.qubes has been pushed to the r3.2 stable repository for the Fedora fc23 template.
To install this update, please use the standard update command:

sudo yum update

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package kernel-devel-4.4.14-11.pvops.qubes has been pushed to the r3.2 stable repository for the Fedora fc23 template.
To install this update, please use the standard update command:

sudo yum update

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package kernel-devel-4.4.14-11.pvops.qubes has been pushed to the r3.2 stable repository for the Fedora fc24 template.
To install this update, please use the standard update command:

sudo yum update

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package kernel-devel-4.4.14-11.pvops.qubes has been pushed to the r3.2 stable repository for the Fedora fc24 template.
To install this update, please use the standard update command:

sudo yum update

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package kernel-4.4.14-11.pvops.qubes has been pushed to the r3.2 stable repository for dom0.
To install this update, please use the standard update command:

sudo qubes-dom0-update

Or update dom0 via Qubes Manager.

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package kernel-4.4.14-11.pvops.qubes has been pushed to the r3.2 stable repository for dom0.
To install this update, please use the standard update command:

sudo qubes-dom0-update

Or update dom0 via Qubes Manager.

Changes included in this update