[linux-lvm] What happens when a disk dies?
Adrian Phillips
a.phillips at dnmi.no
Fri May 11 15:30:36 UTC 2001
>>>>> "Kyle" == Kyle S Hoyt <Kyle_S_Hoyt at raytheon.com> writes:
Kyle> I am very interested in starting to use LVM. We have large
Kyle> amounts of data that is fairly dynamic. Since it is
Kyle> dynamic, we don't need to incur the cost expensive SCSI RAID
Kyle> solutions for data integrity. We currently use four 80 Gig
Kyle> Maxtor Hard Drives to store our data at test events. Of
Kyle> course this means with a /drive1 /drive2 /drive3 and a
Kyle> /drive4 directory. So the user has to search the drives to
Kyle> find the file of interest. We kind of hide this by creating
Kyle> links but the links need to be periodically updated as files
Kyle> are added or deleted. LVM solves this problem. But before
Kyle> I move to LVM, I curious on what happens if a drive dies.
Kyle> If drive2 goes down and I replace it with another drive, do
Kyle> I just lose the data on drive2 or do I lose all of the data
Kyle> in the Logical Volume?
This is a filesystem thing not LVM (well LVM is involved if you use
it). If you lose a drive the filesystem is going to be unhappy to put
it mildly.
I don't understand your problem here , you can :-
- mount each disk under /this_is_the_data as its own filesystem (not
using LVM necessarily), say /this_is_the_data/drive<n>
- search from /this_is_the_data
- if a disk goes then umount drive<n> and searches can still continue
If this does not work then more information is needed.
Sincerely,
Adrian Phillips
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