[Lustre-discuss] Fwd: Tunefs.lustre without amounting everything

[Alastair Ferguson]

Never mind. All good now - I went with A and it worked.

Alastair Ferguson
IT Manager
Capital Markets CRC Limited (CMCRC)
Telephone: +61 2 8088 4222
Mobile: +61 424 235 159
Fax: +61 2 8088 4201
www.cmcrc.com 



Capital Markets CRC Ltd - Confidential Communication
The information contained in this e-mail is confidential.  It is intended for the addressee only.  If you receive this e-mail by mistake please promptly inform us by reply e-mail and then delete the e-mail and destroy any printed copy. You must not disclose or use in any way the information in the e-mail. There is no warranty that this e-mail is error or virus free. It may be a private communication, and if so, does not represent the views of the CMCRC and its associates.  If it is a private communication, care should be taken in opening it to ensure that undue offence is not given.


Begin forwarded message:

> From: Alastair Ferguson <aferguson at cmcrc.com>
> Subject: Tunefs.lustre without amounting everything
> Date: 28 July 2014 3:36:22 pm AEST
> To: lustre-discuss at lists.lustre.org
> 
> On the weekend I moved our lustre filesystem configuration from a single MGS to a failover MGS / MDS with heartbeat and got it going.
> 
> I had to run tunefs.lustre on all OSS / MGS / MDS servers.
> 
> I had some issues with mounting the OSTs on the new failover mgs and could only mount them with the following command:
> 
> tunefs.lustre --writeconf --erase-params --mgsnode=172.16.16.5 --param="mdt.group_upcall=NONE" /dev/mapper/mpath8p1
> 
> 
> Rather than the command I ran on all other servers:
> 
> tunefs.lustre --dryrun --fsname=AC3 --mdt --mgsnode=172.16.16.5 --failnode=172.16.16.6 /dev/mapper/mpath7p1
> 
> I have no idea. Anyway, whatever.
> 
> 
> So I am adding a new OST to the failover MGS and ran this command:
> 
> mkfs.lustre --ost —mgsnode=172.16.16.5 --failnode=172.16.16.6 --param="mdt.group_upcall=NONE" /dev/mapper/mpath7p2
> 
> but it doesn’t mount - I guess I should have known. I then ran the:
> 
> tunefs.lustre --writeconf --erase-params --mgsnode=172.16.16.5 --param="mdt.group_upcall=NONE" /dev/mapper/mpath7p2
> 
> and mounted which worked but it didn’t add to the overall amount of disk space. This was because I should have umounted everything first and then run it I assume.
> 
> So my question is, do I A> umount it and then run:
> 
> mkfs.lustre --ost —mgsnode=172.16.16.5 --param="mdt.group_upcall=NONE" /dev/mapper/mpath7p2
> 
> and then mount or B> umount everything and then run the tunefs.lustre on everything again and then mount? everything together. A would be my choice if I could.
> 
> Thanks,
> 
> Alastair Ferguson
> IT Manager
> Capital Markets CRC Limited (CMCRC)
> Telephone: +61 2 8088 4222
> Mobile: +61 424 235 159
> Fax: +61 2 8088 4201
> www.cmcrc.com 
> 
> 
> 
> Capital Markets CRC Ltd - Confidential Communication
> The information contained in this e-mail is confidential.  It is intended for the addressee only.  If you receive this e-mail by mistake please promptly inform us by reply e-mail and then delete the e-mail and destroy any printed copy. You must not disclose or use in any way the information in the e-mail. There is no warranty that this e-mail is error or virus free. It may be a private communication, and if so, does not represent the views of the CMCRC and its associates.  If it is a private communication, care should be taken in opening it to ensure that undue offence is not given.
> 
> 

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