question about LVM kernel module - mirroring
Hi everybody, I am new to the list and hope you will excuse my (perhaps) silly questions.
1) I have seen in the LVM documentation that the program is divided into:
- A kernel module
- a set o binaries (commands etc.)
I´d like to know whether it is possible to use LVM WITHOUT a kernel module. I mean a deamon process. I´m asking that because sometimes I am not allowed to recompile the kernel on production machines.
2) How can I perform mirroring using LVM? I know the kernel can do that on local disks. Is it possible for the kernel of two clustered machines to mirror two disks on an external storage? I am working on a HA cluster.
Thanks for your attention
Luca Lavorante
Quoted 10 lines · Luca Lavorante
Hi everybody, I am new to the list and hope you will excuse my (perhaps) silly questions.
1) I have seen in the LVM documentation that the program is divided into:
- A kernel module
- a set o binaries (commands etc.)I?d like to know whether it is possible to use LVM WITHOUT a kernel module.
No.
Quoted 3 lines
2) How can I perform mirroring using LVM? I know the kernel can do that on local disks. Is it possible for the kernel of two clustered machines to mirror two disks on an external storage?
LVM doesn't support mirroring ATM. Try the software raid driver (md).
- Joe
Joe, Thanks for your reply.
Luca
Quoted 34 lines · Joe Thornber
Quoted 10 lines · Luca Lavorante
Hi everybody, I am new to the list and hope you will excuse my (perhaps) silly questions.
1) I have seen in the LVM documentation that the program is divided into:
- A kernel module
- a set o binaries (commands etc.)I?d like to know whether it is possible to use LVM WITHOUT a kernel module.
No.
Quoted 3 lines
2) How can I perform mirroring using LVM? I know the kernel can do that on local disks. Is it possible for the kernel of two clustered machines to mirror two disks on an external storage?
LVM doesn't support mirroring ATM. Try the software raid driver (md).
- Joe
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