Re: kern/43629 (RAIDframe should be able to ignore read errors while replacing a component)

[Greg Oster <oster%netbsd.org@localhost>]

The following reply was made to PR kern/43629; it has been noted by GNATS.

From: Greg Oster <oster%netbsd.org@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: kern/43629 (RAIDframe should be able to ignore read errors while
 replacing a component)
Date: Sat, 24 Jul 2021 10:25:43 -0600

 I'm not sure if this is what you meant with:
 
   raidctl -R -f /dev/wd0a raid0
 
 but I agree that raidctl should grow a flag to basically say "ignore any 
 read errors on reconstruction and reconstruct as best you can".
 
 (I had a RAID 1 set have both disks develop errors a few years back... 
 ended up building a custom kernel to ignore the read errors in order to 
 get a rebuild done (and then replace the failing disk, of course).  In 
 my case the bad blocks were not in any files/directory structures, so 
 nothing was lost, but it would still be handy to have a 'yes, really do 
 this' flag...)
 
 Later...
 
 Greg Oster