Shrink Array - calculate time to clear array?

[TexasDave]

I am shrinking my array - dropping an old 3TB drive (which is close to failure) and will just use the remaining 3 6TB drives which have plenty of room.

I kicked off the "clear array drive" script for my 3TB drive. It has been running for 48 hours.

Is there any way to see how much longer it will take or where it is at in the process?

Attaching current status and read/write speeds. Thanks!

Edited January 29, 2023 by TexasDave

[Kilrah]

Progress info availability depends on how you ran the script, but it needs obviously to write to the whole drive, so at most drive size / current write speed if everything is going on correctly... but there are errors on the drive so it's possible that since it's failing it sometimes gets stuck for minutes trying to write to a given location before continuing.

 

You'll want to minimize other array access for best speeds too. 

Edited January 29, 2023 by Kilrah

[TexasDave]

I was hoping 1-2 days max but that does not appear to be the case 🙂

 

[Kilrah]

Clearing a 3TB drive like that should take less than a day, but if there are write errors it can be anything, completely unpredictable...

[TexasDave]

After 3 plus days - I gave up. I figure the bad disk was causing too many errors.

I went with the "Remove Drives Then Rebuild Parity" Method and this worked fine. Took about 12 hours.

Thanks!