gmane.linux.hardware.dell.poweredge

Re: OpenManage 7.2.1 yum repository posted

Thew, Alan — 2013-05-17T11:07:50

Hi,
what can I do on a 2950 with Red Hat 6.4 where I'm trying to upgrade the DRAC firmware (to 1.65)
and I get:

....
Collecting inventory...
FATAL: Module ipmi_msghandler not found.
FATAL: Module ipmi_si not found.

I've used the fix for OMSA but what would people suggest for this problem?

Many thanks

Re: Dell dset install error

Alain Péan — 2013-05-16T20:46:34

Your signature is a bit flashy for me, and I had to click on a button 
("display content" in Thunderbird) to display it. Not very convenient 
for a mailing list, and it is like an ad. You should avoid this 
(netiquette)...

Alain

Le 16/05/2013 11:23, Nick Lunt a écrit :

_______________________________________________
Linux-PowerEdge mailing list
Linux-PowerEdge< at >dell.com
https://lists.us.dell.com/mailman/listinfo/linux-poweredge

Re: Dell dset install error

Nick Lunt — 2013-05-16T09:23:49

Ha that's fixed it, many thanks.


[image: Nick Lunt | Applications DBA Patech Solutions Limited Tame House,
Wellington Crescent, Fradley Park, Lichfield, WS13 8RZ T:: +44(0)1543 444
707 | M:: +44(0)7554 003 634 E:: Nick.Lunt< at >Patech-Solutions.com W::
http://www.patech-solutions.com]


On 16 May 2013 10:18, Giulio <giulioo< at >gmail.com> wrote:

_______________________________________________
Linux-PowerEdge mailing list
Linux-PowerEdge< at >dell.com
https://lists.us.dell.com/mailman/listinfo/linux-poweredge

Re: Dell dset install error

Giulio — 2013-05-16T09:18:24

On Thu, May 16, 2013 at 9:32 AM, Nick Lunt
<nick.lunt< at >patech-solutions.com> wrote:


Try using
    # bash filename.bin
instead of
    # sh filename.bin

Dell dset install error

Nick Lunt — 2013-05-16T07:32:24

Hi folks

dell-dset-lx32-3.4.0.137.bin on RHEL 5.3 x86

[root< at >rhel5.3 /stage]# sh dell-dset-lx32-3.4.0.137.bin
install.sh: line 350: `DSET2.2PreCheck': not a valid identifier

Anyone found a fix for this?

I went to 'previous version' on
http://www.dell.com/support/drivers/us/en/555/DriverDetails?driverId=P3W03and
there are none.

Thanks
Nick .


[image: Nick Lunt | Applications DBA Patech Solutions Limited Tame House,
Wellington Crescent, Fradley Park, Lichfield, WS13 8RZ T:: +44(0)1543 444
707 | M:: +44(0)7554 003 634 E:: Nick.Lunt< at >Patech-Solutions.com W::
http://www.patech-solutions.com]
_______________________________________________
Linux-PowerEdge mailing list
Linux-PowerEdge< at >dell.com
https://lists.us.dell.com/mailman/listinfo/linux-poweredge

Current vendor mode syntax for gen 12 servers

Aaron W — 2013-05-15T21:00:56

What is the current incantation to get a root on the gen 12 enterprise
idracs?

Previous versions it was "util mode -set vendor"

Why?  debugging memory leak on a particular release.  I am aware of all the
reasons I should not know or use this.  Reply individually if you would
like.


Aaron
_______________________________________________
Linux-PowerEdge mailing list
Linux-PowerEdge< at >dell.com
https://lists.us.dell.com/mailman/listinfo/linux-poweredge

Re: Adding a new HDD to an existing RAID 0virtual disk

SilverTip257 — 2013-05-14T16:28:54

Some cpu cycles used since it's software-based, but yeah you'd probably not
notice a difference in usability.



And there's also regular LVM, LVM striping, and LVM mirroring.  Linux
software raid arrays commonly use the multiple device driver (md - mdadm
tool), but LVM doing raid qualifies as software raid.

[0] http://tldp.org/HOWTO/LVM-HOWTO/recipethreescsistripe.html
[1]
https://www.ibm.com/developerworks/community/blogs/AWojo/entry/basic_linux_lvm_striping1?lang=en
[2] http://www.linux-mag.com/id/7582/

Problem with install syscfg via yum on SL 6.4

Jonathan Barber — 2013-05-14T16:07:38

When I try to install syscfg via yum (on Scientific Linux 6.4) I get the error:
"""
warning: rpmts_HdrFromFdno: Header V3 DSA/SHA1 Signature, key ID 8150ff82: NOKEY
Retrieving key from http://linux.dell.com/repo/hardware/latest/RPM-GPG-KEY-dell
Retrieving key from
http://linux.dell.com/repo/hardware/latest/RPM-GPG-KEY-libsmbios

The GPG keys listed for the "Dell OMSA repository - Hardware
independent" repository are already installed but they are not correct
for this package.
Check that the correct key URLs are configured for this repository.
"""

The RPM that yum wants to install is from this URL:
http://linux.dell.com/repo/hardware/latest/platform_independent/rh60_64//DTK/syscfg-4.2.0-4.2.1.el6.x86_64.rpm

and my yum config for the repo has the following keys configured:
gpgkey=http://linux.dell.com/repo/hardware/latest/RPM-GPG-KEY-dell
       http://linux.dell.com/repo/hardware/latest/RPM-GPG-KEY-libsmbios

which are correct as far as I can tell.

Am I doing something stupid or is the syscfg package improperly signed?

Cheers
--
Jonathan Barber <jonathan.barber< at >gmail.com>

Re: Adding a new HDD to an existing RAID 0 virtual disk

Dan Pritts — 2013-05-14T14:50:51

There should be nearly zero performance implications in doing RAID0 in 
software vs. hardware, with the possible exception of the raid card 
caching things differently.

Note that I was not suggesting doing that, exactly - I was suggesting 
that you add a new PV to your LVM.  This will allow you to use the 
additional space but will not give you the performance improvement that 
RAID0 does.

Datta, Samik (Samik) wrote:

Re: RAID 0 vs RAID x

Brent Kimberley — 2013-05-14T13:38:47

Having witnessed spectacular raid 5 and raid 6+h/s failures, pick a raid scheme which fails well. ;-)

Re: iDRAC 7 Express capabilities

Nick Lunt — 2013-05-14T12:38:06

Thanks for the help folks,

looking at page 18 on this doc
ftp://ftp.dell.com/Manuals/all-products/esuprt_electronics/esuprt_software/esuprt_remote_ent_sys_mgmt/integrated-dell-remote-access-cntrllr-7-v1.00.00_User%27s%20Guide_en-us.pdfit
appears that iDRAC7 Express does not support virtual console, which I
guess is what Jens is saying.

Right, time for some reading up, this server is already installed at client
site, I hope we can configure this iDRAC remotely .....




[image: Nick Lunt | Applications DBA Patech Solutions Limited Tame House,
Wellington Crescent, Fradley Park, Lichfield, WS13 8RZ T:: +44(0)1543 444
707 | M:: +44(0)7554 003 634 E:: Nick.Lunt< at >Patech-Solutions.com W::
http://www.patech-solutions.com]


On 14 May 2013 13:12, Ben <bda20< at >cam.ac.uk> wrote:

_______________________________________________
Linux-PowerEdge mailing list
Linux-PowerEdge< at >dell.com
https://lists.us.dell.com/mailman/listinfo/linux-poweredge

Re: iDRAC 7 Express capabilities

2013-05-14T12:24:32

All iDRAC (Enterprise or not) and even Basic Management (former Baseboard Management) is accessible when server is powered off. Of course it needs to be connected to a power source.
While the iDRAC Enterprise has a full Console Redirection, iDRAC Express (and Basic Management) can only be used with serial console redirection, which needs to be enabled & configured beforehands.

Unfortunately I don't have any documentation.

Regards,
Jens

From: linux-poweredge-bounces-Lists On Behalf Of Nick Lunt
Sent: 14 May 2013 14:10
To: linux-poweredge-Lists
Cc: Chris Hollies
Subject: [Linux-PowerEdge] iDRAC 7 Express capabilities

Hi folks

we have purchased some servers with iDRAC 7 Express, however from the documentation I cannot find out if the iDRAC 7 Express supports connecting to the server when the server is powered off, so we can power it on and watch it boot etc all from the iDRAC 7 Express.

If anyone can confirm this I would appreciate it, and a pointer to the relevant documentation would be a great help.
Many thanks
Nick .

[http://www.patech-solutions.com/signatures/nickl-sig.png]
_______________________________________________
Linux-PowerEdge mailing list
Linux-PowerEdge< at >dell.com
https://lists.us.dell.com/mailman/listinfo/linux-poweredge

Re: iDRAC 7 Express capabilities

Ben — 2013-05-14T12:12:28


We have some 720s with iDRAC 7 Expresses which we're communicating with 
through LOM4.  They seem to work while the chassis is 'off'.

As for documentation, I haven't looked.  Sorry.

Ben

iDRAC 7 Express capabilities

Nick Lunt — 2013-05-14T12:10:05

Hi folks

we have purchased some servers with iDRAC 7 Express, however from the
documentation I cannot find out if the iDRAC 7 Express supports connecting
to the server when the server is powered off, so we can power it on and
watch it boot etc all from the iDRAC 7 Express.

If anyone can confirm this I would appreciate it, and a pointer to the
relevant documentation would be a great help.

Many thanks
Nick .

[image: Nick Lunt | Applications DBA Patech Solutions Limited Tame House,
Wellington Crescent, Fradley Park, Lichfield, WS13 8RZ T:: +44(0)1543 444
707 | M:: +44(0)7554 003 634 E:: Nick.Lunt< at >Patech-Solutions.com W::
http://www.patech-solutions.com]
_______________________________________________
Linux-PowerEdge mailing list
Linux-PowerEdge< at >dell.com
https://lists.us.dell.com/mailman/listinfo/linux-poweredge

Re: Linux-PowerEdge Digest, Vol 108, Issue 10

SilverTip257 — 2013-05-14T10:32:26

On Tue, May 14, 2013 at 2:32 AM, Datta, Samik (Samik) <
samik.datta< at >alcatel-lucent.com> wrote:


Ok - I don't have an R700 controller to verify this.
But I can say that you're going to need identical capacity disks in raid
setups, which may be the problem you are seeing.



At a minimum, I'd use a raid1 (with only two disks) if the data is
important.  And since you have >2 drives, you're best off with a raid5 for
some redundancy/fault tolerance and still take advantage of your disk space.

With disks of identical capacity, I'd set up a raid5 array.
However you don't have disks with an identical capacity.

You might keep your existing raid0 and set up the 900GB disk as JBOD or a
single disk raid0 (so the OS can see it).  Then use the OS software raid
support to mirror between your raid0 (which is probably also around 900GB)
and the single 900GB disk so you have some fault tolerance (essentially a
raid0+1).  In this case the mirror is a single disk which may become a
bottleneck in addition to any slowdown from a mirrored setup.


With raid10 you have a pair of mirrors (raid1) that are striped (raid0).
Or raid0+1 you have a stripe (raid0) that is mirrored (raid1).

Correct.

Re: Linux-PowerEdge Digest, Vol 108, Issue 10

Datta, Samik (Samik — 2013-05-14T06:32:33

Dear SilverTip257,
Thanks for replying.

Although expanding an existing RAID 0 makes perfect logical sense, I found out that it is not supported - not by the R700 controller I am using, at least.

While we are at it, can you suggest which RAID level I should be using? -
I confess that I don't know the best practices here. I have 3 disks: 2 of them have 500 GB and the third has 900 GB.

I understand the following:-

*         RAID 0 boosts IO performance at the cost of increasing the chance of failure, and offers no recovery.

*         RAID 1 or 1+0 mirrors the data, and hence exact replicas are available in case of failure.

*         RAID 5 maintains parity and hence is resilient to failure of any single disk.

From: linux-poweredge-bounces< at >dell.com [mailto:linux-poweredge-bounces< at >dell.com] On Behalf Of SilverTip257
Sent: Tuesday, May 14, 2013 5:43 AM
To: Dell PowerEdge List
Subject: Re: [Linux-PowerEdge] Linux-PowerEdge Digest, Vol 108, Issue 10


Date: Mon, 13 May 2013 10:26:11 -0400
From: Dan Pritts <danno< at >umich.edu<mailto:danno< at >umich.edu>>
Subject: Re: [Linux-PowerEdge] Adding a new HDD to an existing RAID 0
        virtual disk
To: "Datta, Samik (Samik)" <samik.datta< at >alcatel-lucent.com<mailto:samik.datta< at >alcatel-lucent.com>>
Cc: "linux-poweredge< at >dell.com<mailto:linux-poweredge< at >dell.com>" <linux-poweredge< at >dell.com<mailto:linux-poweredge< at >dell.com>>
Message-ID: <5190F803.50408< at >umich.edu<mailto:5190F803.50408< at >umich.edu>>
Content-Type: text/plain; charset="iso-8859-1"

RAID0 makes perfect sense with any number of N disks.    "blocks" in the
traditional sense aren't spread out - "stripes" are.

Agreed, having three drives in a raid0 is a valid configuration.


with a "stripe width" of 128k, for instance, you'd have 0-127k on disk0,
128-255k on disk2, 256-383k on disk3, .... (N*128-1 through N*128-1 +
128k) on disk N.

Your survivability goes down with each additional disk, of course - lose
one disk and you lose it all.

That's striping (raid0) for you.  No redundancy whatsoever which is absolutely not a good idea for a system or data you do not want to lose...


None of this answers whether your PERC can re-align a RAID0 stripe onto
a third disk, of course, and to that I do not know the answer.

And I don't know either.  To date I've always needed redundancy and used raid1, raid5, or raid10 arrays.

If the OP has another system with the same or similar raid controller he could set up a test system.  Of course the OP should back up all the data in expectation of the worst to begin with.


I do know that whatever PERC (H700? H710?) I got recently can't do the
equivalent operation on a RAID10, so I'm guessing it can't do RAID0
either, but I'm not sure.

I definitely expect growth of raid0s to be supported - but not shrunk.

As far as I've seen, raid10 arrays can't be grown on any system.
I've seen this with some older Dell PERC controllers and software raid.
This may change in the future, but I've come to the conclusion that growing raid10 arrays is just not supported.


If you just want the additional space, you could easily append the
additional disk via LVM (assuming you're using LVM).

True, but the single disk becomes a bottleneck once the raid0 stripe has been filled.


Datta, Samik (Samik) wrote:

--
Dan Pritts
ICPSR Computing & Network Services
University of Michigan


--
---~~.~~---
Mike
//  SilverTip257  //
_______________________________________________
Linux-PowerEdge mailing list
Linux-PowerEdge< at >dell.com
https://lists.us.dell.com/mailman/listinfo/linux-poweredge

Re: Adding a new HDD to an existing RAID 0 virtual disk

Datta, Samik (Samik — 2013-05-14T06:11:44

Dear Michael,
I am using a R700 and I can confirm it does not support online expansion of a RAID 0 array. I can see the option of expansion in menu, but it remains inactive.

I spoke with a Dell support personnel over phone, and he confirmed it, too.

Thanks for replying.

From: linux-poweredge-bounces< at >dell.com [mailto:linux-poweredge-bounces< at >dell.com] On Behalf Of Michael_Brandt< at >dell.com
Sent: Tuesday, May 14, 2013 12:07 AM
To: linux-poweredge< at >lists.us.dell.com
Subject: Re: [Linux-PowerEdge] Adding a new HDD to an existing RAID 0 virtual disk

An H700 supports online expansion, so this is perfectly doable.  All you do is add the disk to the same disk group that the VD is drawing from, and it should give you the option to expand to fill the additional space.  However, I'm not sure I'd recommend it.  As I understand it, the controller will not re-stripe any of the existing disks, so you will be taking a performance hit.  It would be better to start clean, but the option is there.
_______________________________________________
Linux-PowerEdge mailing list
Linux-PowerEdge< at >dell.com
https://lists.us.dell.com/mailman/listinfo/linux-poweredge

Re: Adding a new HDD to an existing RAID0virtual disk

Datta, Samik (Samik — 2013-05-14T06:05:36

Dear Dan,
Thanks for your reply.

I spoke with a Dell support personnel over phone and he confirmed that an expansion of RAID 0 is not possible. However, if it were RAID 5, then such an expansion would have been possible.

Your suggestion of using LVM makes perfect sense. At RAID 0, hopefully there are no IO performance degradation when using software RAID (no parity calculations).

From: Dan Pritts [mailto:danno< at >umich.edu]
Sent: Monday, May 13, 2013 7:56 PM
To: Datta, Samik (Samik)
Cc: Stroller; linux-poweredge< at >dell.com
Subject: Re: [Linux-PowerEdge] Adding a new HDD to an existing RAID 0 virtual disk

RAID0 makes perfect sense with any number of N disks.    "blocks" in the traditional sense aren't spread out - "stripes" are.

with a "stripe width" of 128k, for instance, you'd have 0-127k on disk0, 128-255k on disk2, 256-383k on disk3, .... (N*128-1 through N*128-1 + 128k) on disk N.

Your survivability goes down with each additional disk, of course - lose one disk and you lose it all.

None of this answers whether your PERC can re-align a RAID0 stripe onto a third disk, of course, and to that I do not know the answer.

I do know that whatever PERC (H700? H710?) I got recently can't do the equivalent operation on a RAID10, so I'm guessing it can't do RAID0 either, but I'm not sure.

If you just want the additional space, you could easily append the additional disk via LVM (assuming you're using LVM).

Datta, Samik (Samik) wrote:

Dear Stroller,

I was thinking stripes numbered 3k goes to disk 0, 3k+1 to disk 1, and 3k+2 to disk 2. But, it looks silly to perform a (mod 3) operation!

You may be right; RAID 0 with 3 disks may not make sense.

-----Original Message-----

From: linux-poweredge-bounces< at >dell.com<mailto:linux-poweredge-bounces< at >dell.com> [mailto:linux-poweredge-bounces< at >dell.com] On Behalf Of Stroller

Sent: Monday, May 13, 2013 5:11 PM

To: linux-poweredge< at >dell.com<mailto:linux-poweredge< at >dell.com>

Subject: Re: [Linux-PowerEdge] Adding a new HDD to an existing RAID 0 virtual disk

On 13 May 2013, at 09:37, Datta, Samik (Samik) wrote:

I am trying to add a new HDD to an existing RAID 0 virtual disk (consisting of 2 HDD).

If you think it is possible to do, please guide me through the steps. I am using a PERC R700 controller.

Your current RAID0 array consists of 2 disks, as is usual.

Each disk in your RAID0 contains half of each block, so that the data is read faster.

What do you want the third disk to do?

I don't believe RAID0 with 3 disks (each with one-third of a block?) is a thing.

Stroller.

_______________________________________________

Linux-PowerEdge mailing list

Linux-PowerEdge< at >dell.com<mailto:Linux-PowerEdge< at >dell.com>

https://lists.us.dell.com/mailman/listinfo/linux-poweredge

_______________________________________________

Linux-PowerEdge mailing list

Linux-PowerEdge< at >dell.com<mailto:Linux-PowerEdge< at >dell.com>

https://lists.us.dell.com/mailman/listinfo/linux-poweredge

--
Dan Pritts
ICPSR Computing & Network Services
University of Michigan
_______________________________________________
Linux-PowerEdge mailing list
Linux-PowerEdge< at >dell.com
https://lists.us.dell.com/mailman/listinfo/linux-poweredge

Re: Linux-PowerEdge Digest, Vol 108, Issue 10

SilverTip257 — 2013-05-14T00:13:28

Agreed, having three drives in a raid0 is a valid configuration.



That's striping (raid0) for you.  No redundancy whatsoever which is
absolutely not a good idea for a system or data you do not want to lose...



And I don't know either.  To date I've always needed redundancy and used
raid1, raid5, or raid10 arrays.

If the OP has another system with the same or similar raid controller he
could set up a test system.  Of course the OP should back up all the data
in expectation of the worst to begin with.



I definitely expect growth of raid0s to be supported - but not shrunk.

As far as I've seen, raid10 arrays can't be grown on any system.
I've seen this with some older Dell PERC controllers and software raid.
This may change in the future, but I've come to the conclusion that growing
raid10 arrays is just not supported.



True, but the single disk becomes a bottleneck once the raid0 stripe has
been filled.

Re: Adding a new HDD to an existing RAID 0 virtual disk

2013-05-13T18:36:42

An H700 supports online expansion, so this is perfectly doable.  All you do is add the disk to the same disk group that the VD is drawing from, and it should give you the option to expand to fill the additional space.  However, I'm not sure I'd recommend it.  As I understand it, the controller will not re-stripe any of the existing disks, so you will be taking a performance hit.  It would be better to start clean, but the option is there.
_______________________________________________
Linux-PowerEdge mailing list
Linux-PowerEdge< at >dell.com
https://lists.us.dell.com/mailman/listinfo/linux-poweredge

Re: Adding a new HDD to an existing RAID 0virtual disk

Dan Pritts — 2013-05-13T14:26:11

RAID0 makes perfect sense with any number of N disks.    "blocks" in the 
traditional sense aren't spread out - "stripes" are.

with a "stripe width" of 128k, for instance, you'd have 0-127k on disk0, 
128-255k on disk2, 256-383k on disk3, .... (N*128-1 through N*128-1 + 
128k) on disk N.

Your survivability goes down with each additional disk, of course - lose 
one disk and you lose it all.

None of this answers whether your PERC can re-align a RAID0 stripe onto 
a third disk, of course, and to that I do not know the answer.

I do know that whatever PERC (H700? H710?) I got recently can't do the 
equivalent operation on a RAID10, so I'm guessing it can't do RAID0 
either, but I'm not sure.

If you just want the additional space, you could easily append the 
additional disk via LVM (assuming you're using LVM).

Datta, Samik (Samik) wrote: