Converting striped lvols to parallel lvols

[Travis Harp_1]

I have a few striped lvols that I want to convert to parallel lvols.
Is there a way to convert these lvols?

Also, can this be done on line or do I need to have down time for the systems involved?

Thanks,
Travis

[PC_7]

Could u pls elaborate what do u mean by parallel lvol?

[Sreedhar Nathani]

Hello Travis,

Do you mean scheduling policy be to changed to 'parallel' instead of striped for Striped volumes?

If yes the answer is no. Scheduling policy either parallel(default) or seqeuntial is only meaningful when using logical volumes under mirror. With Striped Volumes we can not do mirror under LVM.

So Changing Scheduling Policy for striped volumes are not possible to parallel.

If your question is not about scheduling but more related to LVM PVG Distribution then also answer is we can not do online. LVM Won't allow to converting from one layout of logical volumes to another online.

For more details please see the man page of lvchnage.

Hope this helps

Thanks
Sreedhar Nathani