[Bug 1769039] Comment bridged from LTC Bugzilla
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Fri May 4 08:01:49 UTC 2018
------- Comment From FREDERIC at fr.ibm.com 2018-05-04 03:55 EDT-------
Hi,
I tried with the bionic iso and a virtual machine with a multipath setup based on backend file and everything went fine :
---
<disk type='file' device='disk'>
<driver name='qemu' type='raw' cache='none' io='native'/>
<source file='/home/fbonnard/ubuntuimage'/>
<backingStore/>
<target dev='sda' bus='scsi'/>
<serial>0001</serial>
<alias name='scsi0-0-0-0'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='raw' cache='none' io='native'/>
<source file='/home/fbonnard/ubuntuimage'/>
<backingStore/>
<target dev='sdb' bus='scsi'/>
<serial>0001</serial>
<alias name='scsi0-0-0-1'/>
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>
---
I passed disk-detect/multipath/enable=true to the installer and everything went fine :
root at vm80:/home/ubuntu# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 3G 0 disk
??sda1 8:1 0 7M 0 part
??sda2 8:2 0 3G 0 part
??mpatha 253:0 0 3G 0 mpath
??mpatha-part1 253:1 0 7M 0 part
??mpatha-part2 253:2 0 3G 0 part /
sdb 8:16 0 3G 0 disk
??sdb1 8:17 0 7M 0 part
??sdb2 8:18 0 3G 0 part
??mpatha 253:0 0 3G 0 mpath
??mpatha-part1 253:1 0 7M 0 part
??mpatha-part2 253:2 0 3G 0 part /
root at vm80:/home/ubuntu# multipath -ll
mpatha (0QEMU_QEMU_HARDDISK_0001) dm-0 QEMU,QEMU HARDDISK
size=3.0G features='0' hwhandler='0' wp=rw
|-+- policy='service-time 0' prio=1 status=active
| `- 0:0:0:0 sda 8:0 active ready running
`-+- policy='service-time 0' prio=1 status=enabled
`- 0:0:0:1 sdb 8:16 active ready running
root at vm80:/home/ubuntu# ls -ltr /dev/mapper/
total 0
crw------- 1 root root 10, 236 May 4 08:40 control
lrwxrwxrwx 1 root root 7 May 4 08:40 mpatha -> ../dm-0
lrwxrwxrwx 1 root root 7 May 4 08:40 mpatha-part1 -> ../dm-1
lrwxrwxrwx 1 root root 7 May 4 08:40 mpatha-part2 -> ../dm-2
root at vm80:/home/ubuntu# mount |grep ext4
/dev/mapper/mpatha-part2 on / type ext4 (rw,relatime,errors=remount-ro,data=ordered)
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https://bugs.launchpad.net/bugs/1769039
Title:
Ubuntu1804 installer is not able to detect SAN disks(mulitpath disks)
with 'No disk drive was detected' message.
Status in The Ubuntu-power-systems project:
New
Status in debian-installer package in Ubuntu:
New
Bug description:
Problem Description:
===================
Ubuntu1804 installer is not able to detect SAN disks(mulitpath disks) with 'No disk drive was detected' message.
Steps to re-create:
==================
> on Witherspoon test system, tried to install latest ubuntu1804 build
using netboot install.
> Selected appropriate fields and then when it entres detect disk
screen
> It throws below messgae
lqqqqqqqqqqqqqqqqqqqqqqqqqqu [!] Detect disks tqqqqqqqqqqqqqqqqqqqqqqqqqqqk
x x
x No disk drive was detected. If you know the name of the driver needed x
x by your disk drive, you can select it from the list. x
x x
x Driver needed for your disk drive: x
x x
x continue with no disk drive x
x login to iSCSI targets x
x cryptoloop x
x ipr x
x virtio_scsi x
x none of the above x
x x
x <Go Back> x
x x
mqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqj
> Installer not able to detect the SAN disk(mulitpath disks) and so
not able to proceed with installation.
> Unable to proceed with ubutnu1804 installation as installer not able
to detect the disk (SAN disks) using netboot install method
> Attached /var/log/syslog messages from installer
Attached /var/log/syslog files from installer shell prompt
== Comment: #13 - Frederic Bonnard <FREDERIC at fr.ibm.com> - 2018-04-30 09:00:21 ==
Hi,
- did you install install with "disk-detect/multipath/enable=true" ? ( https://help.ubuntu.com/lts/serverguide/multipath-setting-up-dm-multipath.html.en )
- check /var/log/syslog to see you didn't fail to download any udeb related to disk management and make sure there isn't any error .
- check availability of disks with lsblk or "find /dev/disk/ -ls"
F.
== Comment: #14 - INDIRA P. JOGA <indira.priya at in.ibm.com> - 2018-05-02 04:55:55 ==
(In reply to comment #12)
> Hi Indira, thanks for the bug. I have some questions I would like to
> understand better:
>
> What are the device subsystem that this disks are connected to? Is it a
> Fibre Channel connection?
>
> Do you have explicit two connections to the same disk? I.e, you would see
> two disks that the multipathd would need to detect that they are the same,
> or, your subsystem would handle the multi path configuration?
>
> How many disks do you have?
Hi Breno,
System has both SAS card with mulitpath & SAN card with mulitpath.
Yes we have two connections to same disk.
FYI -
SAN -
mpathb (3600507680183050d28000000000002a3) dm-1 IBM,2145
size=100G features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| |- 2:0:1:1 sdaa 65:160 active ready running
| `- 3:0:1:1 sdag 66:0 active ready running
`-+- policy='service-time 0' prio=10 status=enabled
|- 2:0:0:1 sdx 65:112 active ready running
`- 3:0:0:1 sdad 65:208 active ready running
SAS -
mpathl (35000c50076564663) dm-35 IBM,ST300MP0064
size=279G features='0' hwhandler='0' wp=rw
|-+- policy='service-time 0' prio=1 status=active
| `- 1:0:8:0 sdi 8:128 active ready running
`-+- policy='service-time 0' prio=1 status=enabled
`- 1:0:19:0 sds 65:32 active ready running
== Comment: #15 - INDIRA P. JOGA <indira.priya at in.ibm.com> - 2018-05-02 05:01:21 ==
(In reply to comment #13)
> Hi,
> - did you install install with "disk-detect/multipath/enable=true" ? (
> https://help.ubuntu.com/lts/serverguide/multipath-setting-up-dm-multipath.
> html.en )
> - check /var/log/syslog to see you didn't fail to download any udeb related
> to disk management and make sure there isn't any error .
> - check availability of disks with lsblk or "find /dev/disk/ -ls"
>
> F.
Yes i have tried both with multipath enable true & without multipath
in both cases it failed. when problem reported guest has 3 disks and
still not able to detect those disks.
== Comment: #19 - Breno Leitao <brenohl at br.ibm.com> - 2018-05-03 09:02:54 ==
Let's get this mirrored to canonical for their awareness.
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