Redistribute data across a logical volume when adding disks for fastread / parallelism

  • Thread starter Thread starter Jack
  • Start date Start date
J

Jack

Hello,

I am adding disks to a LINUX box so as to increase disk READ access
across a set of data - am wondering:

1- how to add these new disks to the logical volume

2- how using Logical Volume Manager in CENTOS to redistribute the
data across the other disks, so I get the benefit of having multiple
disks.

Any thoughts would be appreciated.

Thanks,

Jack
 
Hello,

I am adding disks to a LINUX box so as to increase disk READ access
across a set of data - am wondering:
Click to expand...

What is "increase read access", the idea is sufficiently
vague to prevent any planning.

First, start out describing exactly what you have, and the
specific use against which it is unsuited.
1- how to add these new disks to the logical volume

2- how using Logical Volume Manager in CENTOS to redistribute the
data across the other disks, so I get the benefit of having multiple
disks.
Click to expand...

Split up data sets so concurrent access is to different
volumes, and/or use RAID array(s).
 
What is "increase read access", the idea is sufficiently
vague to prevent any planning.

First, start out describing exactly what you have, and the
specific use against which it is unsuited.





Split up data sets so concurrent access is to different
volumes, and/or use RAID array(s).
Click to expand...

Hi, can you tell me if I add 2 new disks to CENTOS next week from an
existing set of 2 disks, how do I redistribute the data across all
4 ? Must I copy the data off, and then on to the logical volume ?

thank you , Jack
 
Hi, can you tell me if I add 2 new disks to CENTOS next week from an
existing set of 2 disks, how do I redistribute the data across all
4 ? Must I copy the data off, and then on to the logical volume ?

thank you , Jack
Click to expand...


Again you have not described specifics of your use.

Without specifics, there is no good plan because there is no
one universal use of hard drives.
 
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