Greg 'groggy' Lehey wrote:
yes, i think you are right. however, it is clear to me now why we got confused... since we didn't understand the relationship between vinum and it's devices, we didn't expect it could work until the devices existed, so went down the route of trying to create them before attempting a vinum start... since this unusual relationship isn't explained in the docco, it might be worth adding a paragraph on /dev/vinum and/or a one-liner in the 'start' section to say the devices will be created if they don't exist already...On Saturday, 30 November 2002 at 8:39:44 +0000, Adam Laurie wrote:Greg 'groggy' Lehey wrote:describe the procedure for unplugging the external chassis from machine A, and plugging it into machine B, and bringing up the vinum RAID without re-initialising it (i.e. preserving the data already on it).1. On machine A, stop Vinum. Depending on the hardware, you may need to shut down. 2. Remove the chassis from machine A. 3. Connect the chassis to machine B. Depending on the hardware, you may need to shut down. 4. If you haven't rebooted machine B, run camcontrol rescan on the SCSI bus to discover the new disks. 5. Run 'vinum start'.are you saying that at this point vinum will scan all disk busses and decide for itself that the raid exists, and reconstruct /dev/vinum?Yes.i know you've said in a previous post that /dev/vinum "isn't important", but since it contains mount points etc, i assume it's reasonably vital... anyway, our experience when we complete the steps above was that /dev/vinum/raid1 etc. didn't exist, so we couldn't mount the volume, which is why we went on to perform the other steps i described.It looks like you got confused at some point. It's unlikely that you can still reconstruct what happened.
anyway, thatnks for your help in resolving this. it has been most useful.
cheers,
Adam
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