Disk mount points...

[Scott E Smith]

We are currently moving two systems from one datacenter to another. Right now all of the external disk logical volumes are mounted off of the / filesystem (e.g. /m008). For obviuos reasons we would like to move the mounts but we are going to have a lot of issues with customized scripts etc that will need to be re-written. Would there be a performance impact to disk i/o if we put a link at /m008 that went to /var/opt/xxx/xxxx.... Our project has an impossible timeline and no budget (what's new) and we are looking for a workable temporary solution. All replies appreciated...Thanks.

[James R. Ferguson · Accepted solution]

Hi:

A symbolic link will not cost anything in performance. It's a very appropriate solution.

Regards!

...JRF...

[John Meissner]

are the logical volumes in a seperate volume group? if so then there is no need to move them. if the logical volumes are directly off / then yes, I would recommend moving them to a different mount point or just create a different volume group and keep the mount point the same. - this way yours scripts won't be affected

[John Meissner]

James... you're too fast... this was the second time you beat me today.

[S.K. Chan]

As a "workable temporary solution" yes the sym link makes sense. In the long run having too many sym link will impact the performance in general, not significant though. I usually shy away from having to create sym link unless it takes major resources to update the application scripts/programs.
my $0.02

[Mike Miller_8]

We've used links quite a bit for this kind of thing and have had no problems. One note though - pay close attention to the attributes and ownerships of the link that you create.

[Hai Nguyen_1]

Scott,

There will be no performance issue at all with your mountpoint approach. You can in fact make this a permanent solution if you wish.

Hai