Bug 624781

Summary: RHEV-H can't find root device after installation
Product: Red Hat Enterprise Linux 6 Reporter: Mike Burns <mburns>
Component: ovirt-nodeAssignee: Joey Boggs <jboggs>
Status: CLOSED CURRENTRELEASE QA Contact: Virtualization Bugs <virt-bugs>
Severity: urgent Docs Contact:
Priority: urgent    
Version: 6.0CC: apevec, llim, ovirt-maint, vbian
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2010-11-11 16:21:14 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
patch
none
ovirt.log none

Description Mike Burns 2010-08-17 18:46:09 UTC 
Description of problem:
After installation, the machine reboots, but fails to find the root device.

The issues occurs on device-mapper-multipath devices.  It does not occur with virtio devices.  I don't have a machine to test on plain device-mapper devices

Version-Release number of selected component (if applicable):
RHEV-H 6.0-11

How reproducible:
Always on multipath devices

Steps to Reproduce:
1.Install RHEV-H on multipath host
2.reboot
3.
  
Actual results:
Dracut can't find root device

Expected results:
Boots successfully

Additional info:
Comment 1 Joey Boggs 2010-08-17 22:02:06 UTC 
Created attachment 439226 [details]
patch
Comment 2 Mike Burns 2010-08-18 03:59:09 UTC 
For clarification, issue is that a bunch of scsi drivers were missing from initrd image.  Patch adds those images in.
Comment 4 Vivian Bian 2010-08-20 03:12:33 UTC 
Created attachment 439841 [details]
ovirt.log

checked with rhev-hypervisor-6.0-12.el6

still get following result in ovirt.log :

Aug 20 03:06:33 installing the image.
findfs: unable to resolve 'LABEL=Boot'
Aug 20 03:06:34 unable to determine Root partition

ERROR: Install locally and reboot FAILED. See /var/log/ovirt.log

[root@localhost ~]# ll /dev/disk/by-label/
total 0
lrwxrwxrwx. 1 root root 10 Aug 20 03:04 Root -> ../../sda1
lrwxrwxrwx. 1 root root 10 Aug 20 03:04 RootBackup -> ../../sda2
lrwxrwxrwx. 1 root root 11 Aug 20 03:04 _rhev-hypervisor -> ../../loop3
lrwxrwxrwx. 1 root root  9 Aug 20 03:10 rhev-hypervisor -> ../../sr0
Comment 5 Vivian Bian 2010-08-20 03:13:08 UTC 
according to comment 4 set bug status to ASSIGNED
Comment 6 Alan Pevec 2010-08-20 12:03:01 UTC 
(In reply to comment #4)

> [root@localhost ~]# ll /dev/disk/by-label/
> total 0
> lrwxrwxrwx. 1 root root 10 Aug 20 03:04 Root -> ../../sda1
> lrwxrwxrwx. 1 root root 10 Aug 20 03:04 RootBackup -> ../../sda2

these should point to dm-* i.e. /dev/mapper/*p1 and p2
like here in blkid output:
# blkid|grep Root
/dev/mapper/0QEMU    QEMU HARDDISK   drive-scsi0-0-1p1: LABEL="Root" UUID="a03ab75f-2055-4d4f-a190-8eb5bf7b742d" TYPE="ext2" 
/dev/mapper/0QEMU    QEMU HARDDISK   drive-scsi0-0-1p2: LABEL="RootBackup" UUID="e9c1dbc1-2085-4dd0-b989-353e8f43517b" TYPE="ext2"
Comment 7 Alan Pevec 2010-08-20 12:10:17 UTC 
bug 613754 was reopened for the issue in comment 4
Setting this one back to ON_QA to verify scsi drivers are now included.
Comment 8 Vivian Bian 2010-08-20 12:45:03 UTC 
(In reply to comment #7)
> bug 613754 was reopened for the issue in comment 4
> Setting this one back to ON_QA to verify scsi drivers are now included.

[root@localhost ~]# gzip -dc /live/isolinux/initrd0.img |cpio -it|grep drivers/scsi
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/sr_mod.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/sd_mod.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/scsi_transport_spi.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/sym53c8xx_2
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/sym53c8xx_2/sym53c8xx.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/aic7xxx
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/aic7xxx/aic7xxx.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/aic7xxx/aic79xx.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/scsi_transport_sas.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/scsi_wait_scan.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/device_handler
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/device_handler/scsi_dh_rdac.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/3w-9xxx.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/3w-sas.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/3w-xxxx.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/aacraid
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/aacraid/aacraid.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/libsas
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/libsas/libsas.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/aic94xx
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/aic94xx/aic94xx.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/arcmsr
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/arcmsr/arcmsr.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/scsi_transport_iscsi.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/libiscsi.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/be2iscsi
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/be2iscsi/be2iscsi.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/scsi_tgt.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/scsi_transport_fc.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/bfa
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/bfa/bfa.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/libiscsi_tcp.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/cxgb3i
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/cxgb3i/cxgb3i.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/libfc
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/libfc/libfc.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/fcoe
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/fcoe/libfcoe.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/fcoe/fcoe.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/fnic
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/fnic/fnic.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/hpsa.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/hptiop.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/imm.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/initio.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/ips.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/osd
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/osd/libosd.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/osd/osd.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/libsrp.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/lpfc
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/lpfc/lpfc.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/megaraid
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/megaraid/megaraid_mm.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/megaraid/megaraid_mbox.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/megaraid/megaraid_sas.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/raid_class.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/mpt2sas
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/mpt2sas/mpt2sas.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/mvsas
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/mvsas/mvsas.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/osst.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/pmcraid.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/qla2xxx
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/qla2xxx/qla2xxx.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/qla4xxx
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/qla4xxx/qla4xxx.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/stex.ko
lib/modules/2.6.32-66.el6.x86_64/kernel/drivers/scsi/iscsi_tcp.ko
88739 blocks

scsi drivers are loaded , and for exact local SATA disk 
[root@localhost 0000:00:11.0]# readlink driver 
 ../../../bus/pci/drivers/ahci
Comment 9 Vivian Bian 2010-08-20 13:56:42 UTC 
and for drives on VMs (virtio qemu qcow2 image)
[root@rhevh6 virtio0]# readlink driver 
../../../bus/virtio/drivers/virtio_blk

With virtio qcow2 image, could install RHEVH and boot into the os successfully . No "can't find root device " issue . 

So set bug status to VERIFIED
Comment 10 releng-rhel@redhat.com 2010-11-11 16:21:14 UTC 
Red Hat Enterprise Linux 6.0 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.