Re: F9 RAID1 server sda failure

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On Wed, 2019-02-27 at 14:43 +0000, Gary Stainburn wrote:
> Hi folks
> 
> I've got an old F9 server which has been running forever without any problems 
> has just failed to reboot.
> 
> I have 2 x RAID1 setup
> 
> sda and sdb are the first raid device
> sdc and add are the second device.
> 
> Also, to make life even more fun I only have 4 SATA ports so I have to remove 
> one HDD to get the DVD to work, and the m/b doesn't support USB DVD
> 
> it looks like sda has failed - it doesn't even appear in the BIOS list.
> 
> I am currently cloning sdb before doing anything, but once that's done, I want 
> to replace sda and rebuild the array. From memory, I do not think that the 
> boot partitons could be RAID'ed back then so I'm not sure what state the boot 
> partition is in on sdb.
> 
> Does anyone have any instructions on how to do this based on the age of the 
> system? So far, Google only seems to want to give me more recent solutions.

Given that it's RAID1 (i.e. mirroring) can't you just use dd to copy
all of sdb to sda?

poc
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