[OpenAFS] Switch containers between two fileservers

Lukas Kubin kubin@opf.slu.cz
Sun, 09 May 2004 17:17:18 +0200


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Thank you for your answers, currently your solution seems more suitable 
for me, since I would like to avoid IP address switching.

I want to be sure I understand you right. So the summary:
- servers A and B are both AFS fileservers and dbservers
- I want to replace A's harddrives with those taken from B
- servers A and B has a system harddrive with Linux and AFS binaries. 
that harddrive is not going to be moved
- server A should stay serve as an AFS server, B has no role in AFS more

The steps I'll do are:
1) Move all volumes from A to B using "vos move" command
2) Delete VLDB entries for all volumes currently residing on B using 
"vos delentry" command. It means deleting VLDB entries of volumes I 
moved from A to B in step 1)
3) Turn off both servers and migrate harddrives from B to A (and from A 
to B)
4) Let server B turned off. It is not going to be AFS server anymore.
5) Turn on server A and do "vos syncserv" and "vos syncvldb"

Thank you very much for your support!

lukas

Sven Oehme wrote:
> 
> hy ,
> 
> if i understand you right and you want to move the partition just one 
> time , delete all records from the vldb which point to the server , you 
> want to make free with vos delentry . migrate the harddrive to the other 
> server and restart the fs process . now make a vos syncserv and syncvldb 
> and all your volumes are now on the new Server .
> 
> but don't forget , for this task you have a downtime of your system ...
> 
> Sven
> 
> -------------------------------------------------------------------------------------------------------------------------
> Dept. A141,  TG/SSG EMEA AIS Strategy and Architecture
> Development Leader Stonehenge
> IBM intranet ---> http://w3.ais.mainz.de.ibm.com/stonehenge/
> internet ---> http://www-5.ibm.com/services/de/its/filestore.html
> Phone (+49)-6131-84-3151
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> E-Mail : oehmes@de.ibm.com
> 
> 
> *Lukas Kubin <kubin@opf.slu.cz>*
> Sent by: openafs-info-admin@openafs.org
> 
> 05/09/2004 04:26 PM
> 
> 	
> To
> 	openafs-info@openafs.org
> cc
> 	
> Subject
> 	Re: [OpenAFS] Switch containers between two fileservers
> 
> 
> 	
> 
> 
> 
> 
> 
> Sorry my unclean description. I don't want to move the volumes. I want
> to change the physical disks between two servers. Server A has 400GB
> data container and should stay serve as an AFS server. Server B has
> 800GB data container and currently is also an AFS fileserver. However,
> we need to switch the RAID containers (by changing harddisks) between
> those 2 servers and use server B for different purpose.
> 
> So the question is:
> Can I move all volumes from server A to server B and then take the B's
> drives and put them into server A?
> 
> Thank you.
> 
> lukas
> 
> Derek Atkins wrote:
>  > I dont think I understand what you mean.
>  >
>  > Do you want to move the AFS files from fileserver 1 onto fileserver 2,
>  > and vice-versa?  If so, then you just need to "vos move" all the RW
>  > volumes back and forth to get them on the right servers, and then you
>  > can 'vos addsite', 'vos remsite', 'vos release', 'vos zap' to "move"
>  > the read-only volumes.  Just swapping disk arrays between the servers
>  > wont work right -- your VLDB would get out of sync.
>  >
>  > -derek
>  >
>  > Lukas Kubin <kubin@opf.slu.cz> writes:
>  >
>  >
>  >>I have two OpenAFS fileservers. Each one has a system container (with
>  >>the Linux installation) and a RAID container containing an AFS
>  >>partition.
>  >>I would like to switch those containers between the 2 servers.
>  >>Is it possible for the OpenAFS system? If yes, which steps do I have 
> to do?
>  >>Thank you.
>  >>
>  >>lukas
>  >>
>  >>--
>  >>Lukas Kubin
>  >>
>  >>phone: +420596398275
>  >>email: kubin@opf.slu.cz
>  >>
>  >>Information centre
>  >>The School of Business Administration in Karvina
>  >>Silesian University in Opava
>  >>Czech Republic
>  >>http://www.opf.slu.cz
>  >
>  >
> 
> -- 
> Lukas Kubin
> 
> phone: +420596398275
> email: kubin@opf.slu.cz
> 
> Information centre
> The School of Business Administration in Karvina
> Silesian University in Opava
> Czech Republic
> http://www.opf.slu.cz
> 

-- 
Lukas Kubin

phone: +420596398275
email: kubin@opf.slu.cz

Information centre
The School of Business Administration in Karvina
Silesian University in Opava
Czech Republic
http://www.opf.slu.cz

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