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Special Forums Hardware Filesystems, Disks and Memory Linux Storage system: looking for advices Post 302384545 by pludi on Tuesday 5th of January 2010 04:44:33 PM
Old 01-05-2010
No, it's not possible with LVM alone. LVM is designed to simplify the management of multiple, different devices by grouping them together. Bonus is a slight speed improvement. If you loose one drive with LVM, the data on it is gone for good too, but it's easy to extend the size.

RAID, on the other hand, is designed not to simplify drive management, but to ensure data reliability. It's not trivial to manually represent multiple RAIDs as one storage, but if one device fails you'll have no data loss.
 
pvck(1M)																  pvck(1M)

NAME
pvck - check or repair a physical volume in LVM volume group SYNOPSIS
pv_path pv_path DESCRIPTION
This command is supported for arguments belonging to volume groups version 1.0. Attempting this command with arguments belonging to volume groups version 2.0 or higher will result in an error. Note: Currently is only capable of detecting bad checksums caused by a forward system migration after a backward system migration. It should not be used in other situations. The command examines and repairs LVM data structures on a raw disk (pv_path) in a volume group. Options and Arguments recognizes the following options and arguments. Repair problems found. Report, but do not repair problems. pv_path The raw device path name of a physical volume. RETURN VALUE
returns the following values Either no problems were found or all problems were corrected. Unable to repair. EXAMPLES
Examine LVM checksums on without modifying anything: Repair LVM checksums on if necessary: WARNINGS
should only be run on a device whose volume group has not been activated. is designed to repair the root device or devices while the system is booted in maintenance mode ("", see hpux(1M) on PA-RISC systems). AUTHOR
was developed by HP. SEE ALSO
intro(7), lvm(7). pvck(1M)
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