So today my cache drive failed.
It has gone into read-only mode so I'm unable to invoke the mover to pull the data off.

I'm wondering how I can get the files off the the cache drive and onto my main array so it can be replaced?

I have tried unBalance to perform the move, but that gives me what seems like a generic warning when I try to move the files. Probably because the cache is in read-only mode.

I've also tried rsync directly from cache to disk but get an `Input/output error (5)`

Maybe try something simple. From the command line:

mkdir /mnt/disk1/cachecopy
cp -rav /mnt/cache/* /mnt/disk1/cachecopy/

 

What filesystem? Or better yet please post complete diagnostics.

13 minutes ago, testdasi said:

Maybe try something simple. From the command line:

mkdir /mnt/disk1/cachecopy
cp -rav /mnt/cache/* /mnt/disk1/cachecopy/

 

Thank you, but she's a goner now.
Tried to stop the array to put it in maintenance mode and now no filesystem is being detected on the cache.

2 minutes ago, johnnie.black said:

What filesystem? Or better yet please post complete diagnostics.

Before it sailed into the great ether, it was brtfs

7 minutes ago, Mearman said:

in maintenance mode and now no filesystem is being detected on the cache.

That's normal, maintenance mode doesn't mount any devices, if still needed see here for some btrfs recovery options.