4.2.20 : Volume expansion will not work beyond 16 TB...

[zanande]

I did this operation 2 times without problems,
with readynas 6 (6*3To and 6*2To)

I did replace 2*2To disk by 2*4To
then offline expansion's not working for the first time for me :

"Attempt to write block to filesystem resulted in short write while trying to resize /dev/c/c"
no damage to the filesystem,
but blocked even with offline expansion...

I don't know if it's because of new Radiator (4.2.26),
or because of 4To disk. I tried an apgt upgrade.

[mdgm-ntgr]

It is not a good idea to do an apt-get upgrade.

You cannot expand beyond 16TB. You need to do a factory default with the drives in place.

If you attempt offline expansion to overcome the 8TB limit make sure you are not trying to expand past 16TB. Also backup your data first so if things do go wrong you have something to fall back to.

ReadyNAS OS 6 does not have these expansion limitations.

[zanande]

ok for the update;

My volume is not beyond 16Tb, I got 9Tb and want to go 11TB.
I should only have the 8Tb limit, that is why i tried offline expansion.
But this time it's not working.

[StephenB]

Can you tell us your starting point more clearly? "6*3To and 6*2To" doesn't make any sense.

[zanande]

yes, sorry,

I got 2 READYNAS 6

one 6*2To, i already had to do an offline expansion
and one other 6*3To, i did also an offline expansion

both without any problems

now i got 2*4To disk, so I tried to replace 2*2To in the first NAS
the 4To disk are well recognized (Western Digital RED)
but I got this error, i tried several times,
no problem with FSCHK but still

thanks,

[StephenB]

So you have 6x2TB, and tried to go to 4x2TB+2x4TB. Which ought to be 10 to 12 TB.

Did you initially have 1x2TB, or did you do the initial factory reset with 6x2TB installed?

You are running xraid2 with single redundancy?

[zanande]

I did initially have something like 1*2To (or 2*1To) I don't remember exactly
I was not aware of the 8To limitation
I use xraid2 with single redundancy
I never did factory reset

I needed to use offline expansion to get 10TB

thanks

[StephenB]

Since the offline expansion failed the second time, I think you will need to do the factory reset.