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Increasing TDEV size on VMAX with either SMC or SYMCLI
Is it possible to increase the size of a Thin Device on the VMAX using either SMC or SYMCLI?! I can do it easily on our CX arrays but I was given a request to increase the size of of a thin lun and I can't for the life of me find how to do it on SMC and SYMCLI isn't very helpful either.
I don't have a problem with fixing things on the VMAX but increasing the size of a lun (from say 36GB to 100GB) doesn't seem to be easy to find. Is there some way to do it like Unisphere or is this a case where I'll have to create a larger device and migrate the data?
Any quick/easy answers appreciated!
jarbarian
106 Posts
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May 1st, 2012 11:00
Ok that helps to some extent but I don't see any options for creating a meta volume from the existing device. I will check your document and see if I can find the right answer. That's definitely been helpful from both of you. Since I've never had the need to expand luns on a DMX or VMAX (without migration) this is all new to me.
DanPJ
309 Posts
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May 1st, 2012 11:00
You need to turn it into a meta-device to expand.
From:
jarbarian
To:
Daniel Jastredowski
Date:
05/01/2012 02:11 PM
Subject:
New message: "Increasing TDEV size on VMAX with
either SMC or SYMCLI"
EMC Community Network
Increasing TDEV size on VMAX with either SMC or SYMCLI
created by jarbarian in Symmetrix Support Forum - View the full discussion
Is it possible to increase the size of a Thin Device on the VMAX using
either SMC or SYMCLI?! I can do it easily on our CX arrays but I was
given a request to increase the size of of a thin lun and I can't for the
life of me find how to do it on SMC and SYMCLI isn't very helpful either.
I don't have a problem with fixing things on the VMAX but increasing the
size of a lun (from say 36GB to 100GB) doesn't seem to be easy to find. Is
there some way to do it like Unisphere or is this a case where I'll have
to create a larger device and migrate the data?
Any quick/easy answers appreciated!
Reply to this message by replying to this email -or- go to the message on
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codyhosterman
286 Posts
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May 1st, 2012 11:00
You cannot increase or decrease the size of an individual TDEV on a Symmetrix. What you can do is convert it into what we call a metavolume by connecting it to other unused devices. The additional devices will add capacity to the original device without changing any identifying information of it other than size. We offer either concatenated metavolumes or striped. See this document for more detail:
http://powerlink.emc.com/km/live1/en_US/Offering_Technical/Technical_Documentation/300-006-718.pdf
DanPJ
309 Posts
0
May 1st, 2012 12:00
Something like this:
symconfigure -sid XXXX -cmd "form meta from dev AAAA, config=concatenated;
add dev BBBB to meta AAAA;" commit -nop
If pre-allocating:
symconfigure -sid XXXX -cmd "start allocate on tdev AAAA start_cyl=0
end_cyl=last_cyl;" commit -nop
From:
jarbarian
To:
Daniel Jastredowski
Date:
05/01/2012 02:55 PM
Subject:
New message: "Increasing TDEV size on VMAX with
either SMC or SYMCLI"
EMC Community Network
Re: Increasing TDEV size on VMAX with either SMC or SYMCLI
created by jarbarian in Symmetrix Support Forum - View the full discussion
Ok that helps to some extent but I don't see any options for creating a
meta volume from the existing device. I will check your document and see
if I can find the right answer. That's definitely been helpful from both
of you. Since I've never had the need to expand luns on a DMX or VMAX
(without migration) this is all new to me.
Reply to this message by replying to this email -or- go to the message on
ECN
Start a new discussion in Symmetrix Support Forum by email or at ECN
==========
This e-mail (including any attachments) may contain information that is
private, confidential, or protected by attorney-client or other privilege.
If you received this e-mail in error, please delete it from your system
without copying it and notify sender by reply e-mail, so that our records
can be corrected.
==========
jarbarian
106 Posts
0
May 2nd, 2012 04:00
Ok thanks for the help. I will try some of the options listed and report back.
DanPJ
309 Posts
0
May 2nd, 2012 06:00
You're missing the "add dev" portion of the command. I know this works.
symconfigure -sid XXXX -cmd "form meta from dev AAAA, config=concatenated; add dev BBBB to meta AAAA;" commit -nop
If pre-allocating:
symconfigure -sid XXXX -cmd "start allocate on tdev AAAA start_cyl=0 end_cyl=last_cyl;" commit -nop
jarbarian
106 Posts
0
May 2nd, 2012 06:00
Got it, thank you!
jarbarian
106 Posts
0
May 2nd, 2012 06:00
Yeah this isn’t working. I am getting the “missing action” error. Keep in mind I did put in the proper SID and device name.
suratia
3 Posts
0
March 5th, 2017 08:00
Do you/anyone have steps or documents to perform this steps with Unisphere? Thx
bool
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9 Posts
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March 5th, 2017 13:00
HI
you should refer to online help for both product SMC and unisphere for vmax
Form Meta dialog box
Use this dialog box to manage metadevices in your configuration.
This dialog box contains the following elements:
* SMC will consider the first device added to the meta device to be the meta head and will further filter the available devices according to its attributes.
================
note: smc EOPS in 2017
https://support.emc.com/products/6226_Symmetrix-Management-Console---SMC/Documentation/
https://support.emc.com/products/27045_Unisphere-for-VMAX/Documentation/
page 248 from https://support.emc.com/docu78882_Unisphere-for-VMAX-8.3.0-Online-Help.pdf?language=en_US
Regards,
Oleh
suratia
3 Posts
0
March 6th, 2017 12:00
Following the steps on page 248 of document, I am not able to see all my existing tdev’s. Is that normal?
bool
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9 Posts
0
March 9th, 2017 00:00
Good Day,
can you check if these devices are listed from symcli e.g. symdg list -sid XXX
can you run discovery in SE symcfg disco and in UNIVMAX UI.
regards,
Oleh
treesk
26 Posts
0
March 22nd, 2017 03:00
Hi,
You might need to check your code version first, if your code is supported with symcli 8.3.0 we can change TDEV device size directly from symdev command:
symdev -sid [symmID] modify [symmDEV] -tdev -cap [new size] -captype
Referred to SYMCLI 8.3.0 CLI Reference Guide (page 159)
Kawin.
KW160
121 Posts
0
March 22nd, 2017 05:00
Note: Increasing a TDEV size is only available on VMAX3 and All Flash running HYPERMAX 5977. Older generation VMAXes (10K/20K/40K) will still require a meta device for expansion.