ISST:SAN:luckyv1:While Installation,Disk detection is taking more than 4 hours for Host(Ubuntu KVM)

[bugproxy]

Problem Description
==========================

While trying reinstallation of Ubuntu on Host,disk detection is taking more time.

I am having around 100+ disks on this system.B'se of that Unable to install Ubuntu on host

  ??????????????????????? Starting up the partitioner ???????????????????????
  ? ?
  ? 43% ?
  ? ?
  ? Scanning disks... ?
  ? ?
  ???????????????????????????????????????????????????????????????????????????

                                              This window is there for past 6 hours

== Comment: #12 - LEKSHMI C. PILLAI <email address hidden> - ==
Hi

Today I tried with disabling the SAN disks and tried Installation.It went fine and took less an half an hour for installation.

But that is not the recommended process.

With disks its not suppose to take more than an hour.

Please have a check on this

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------- Comment From <email address hidden> 2016-11-11 05:42 EDT-------
*** Bug 148293 has been marked as a duplicate of this bug. ***

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2016-12-05 19:09 EDT-------
Is there any target date for this or targeted release?

------- Comment From <email address hidden> 2017-01-25 04:33 EDT-------
Hi Lekshmi,

Are you able to reproduce this defect while installing 16.04.2 ?

Thank you.

[Michael Hohnbaum (hohnbaum)]

Steve,

Can someone from Foundations please look at this bug.

Thanks.

                        Michael

On 10/07/2016 03:30 AM, Launchpad Bug Tracker wrote:
> bugproxy (bugproxy) has assigned this bug to you for Ubuntu:
>
> Problem Description
> ==========================
>
> While trying reinstallation of Ubuntu on Host,disk detection is taking
> more time.
>
> I am having around 100+ disks on this system.B'se of that Unable to
> install Ubuntu on host
>
>
>
>
> ??????????????????????? Starting up the partitioner ???????????????????????
> ? ?
> ? 43% ?
> ? ?
> ? Scanning disks... ?
> ? ?
> ???????????????????????????????????????????????????????????????????????????
>
>
> This window is there for
> past 6 hours
>
>
> == Comment: #12 - LEKSHMI C. PILLAI <email address hidden> - ==
> Hi
>
> Today I tried with disabling the SAN disks and tried Installation.It
> went fine and took less an half an hour for installation.
>
> But that is not the recommended process.
>
> With disks its not suppose to take more than an hour.
>
>
> Please have a check on this
>
> ** Affects: ubuntu
> Importance: Undecided
> Assignee: Taco Screen team (taco-screen-team)
> Status: New
>
>
> ** Tags: architecture-ppc64le bugnameltc-145933 severity-high targetmilestone-inin---

--
Michael Hohnbaum
OIL Program Manager
Power (ppc64el) Development Project Manager
Canonical, Ltd.

[Michael Hohnbaum (hohnbaum)]

Canonical has no environment to reproduce this problem. If IBM were to profile this and give us some targeted fixes, we could consider them, but we do not have the resources to commit to investigating this bug.

If this can be reproduced with MAAS, then it might indicate a kernel issue. Otherwise, we suspect a performance issue in d-i's disk detection/handling code.

[Manoj Iyer (manjo)]

Could you please try reproducing this with the 16.04.3 -hwe kernel and produce this behavior ?

[Manoj Iyer (manjo)]

Since there is no update on this bug for quite a while I am closing it for now. Please reopen if this is still and issue.