mounting /usr/sap/trans

[Former Member]

Hi,

In 2 system landscape, We mount /usr/sap/trans directory of development server to production server with the same name.

e.g. # mount <hostname_dev>:/usr/sap/trans /usr/sap/trans.

The /usr/sap/trans of both the servers are on SAN. The doubt is, after mounting /usr/sap/trans of dev to prd:

- what will happen to the contents of /usr/sap/trans of production server?

- Will the contents of be overwritten by the contents of /usr/sap/trans of developemnt server?

- After mounting /usr/sap/trans, if I run unix command cd /usr/sap/trans, where would i go? /usr/sap/trans of development or production?

- When I unmount the /usr/sap/trans, will i get back the /usr/sap/trans of production?

- should we take the backup of /usr/sap/trans and other sub-directories?

Pls share.

Rgds,

- gaurav

[JPReyes · Accepted solution]

Hi gaurav,

what will happen to the contents of /usr/sap/trans of production server? 

It will remain there but /usr/sap/trans of the NFS will be on top so no changes will be done to the original one.

Will the contents of be overwritten by the contents of /usr/sap/trans of developemnt server? 

Nope... as i said before it will remain there but the /usr/sap/trans coming from the NFS will take over.

After mounting /usr/sap/trans, if I run unix command cd /usr/sap/trans, where would i go? /usr/sap/trans of development or production? 

It will go to the one in dev, remember you just mount it

When I unmount the /usr/sap/trans, will i get back the /usr/sap/trans of production? 

Yes... that should happen.

should we take the backup of /usr/sap/trans and other sub-directories? 

It's always good to have backups specially when modifying something that you're not 100% sure what the results will be.

Regards

Juan