I am new to SVM .when i try to learn RAID 1 , first they are creating two RAID 0 strips through
In the next step
next step is
Please guide me what is the mirror and sub mirror. i knew the RAID 1 concept but i like to know the difference between mirror and the sub mirror and one way mirroring , two way mirroring.
Thanks
MaroV
Last edited by vr_mari; 08-15-2009 at 01:38 PM..
Reason: more clarified question
in your example d50 is the mirror, d51 and d52 are the sub mirrors.
d51 and d52 are meta-devices that reference the real slice on the disk. d50 is the meta-device that references both sub-mirrors, d51 and d52. Read/write actions go to d50, SVM then applies the read/write to both sub-mirrors at the same time thus maintaining the RAID1.
d0 - a meta device (logical device), this is the actual mirror we use to store the data.
d10 & d20 - these are the sub-mirrors formed by two different slices.
The writting is done in d0 but physically, d0 writes the data into two sub-mirrors (d10 & d20 ). When we perform any kind of operation with this raid device, we only point d0.
Means, d0 is the actual raid device we refer.
Hi All
BAsed on the below I would like to verifu two things
(1) The udnerlying mirroris for '/mnt' na dit onlcy contaisne 1 sub-mirror, with one sliceon is one disk and hence, data loss on the mount point (the mount point, '/mnt' is backed up)
(2) the Procedure for renewal
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I have an Ubuntu system which I have an faulted mirror.
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GRUB
## ## End Default Options ##
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