Expansion assigns new capacity to Reserved for Snapshot

[BMach]

I am running 4.2.24. I have three drives in a Pro Business Edition. 2 x 500 GB, 1 x 1 TB. I had about 869 GB total space prior to expansion.

I have done a hot swap and replaced a 500 GB with a 1 TB. All of the additional space is assigned to snapshots

Is there any options other than a Factory Reset. Years ago when I added the 1 TB to the 2 x 500 GB array, I had the same problem and had to Factory Reset to get the useable space to increase.

So my questions are (i) what to do to fix the problem and (ii) what to do to avoid the problem if I expand an array again.

[GLJ1]

BMach wrote:

I am running 4.2.24. I have three drives in a Pro Business Edition. 2 x 500 GB, 1 x 1 TB. I had about 869 GB total space prior to expansion. I have done a hot swap and replaced a 500 GB with a 1 TB. All of the additional space is assigned to snapshots Is there any options other than a Factory Reset. Years ago when I added the 1 TB to the 2 x 500 GB array, I had the same problem and had to Factory Reset to get the useable space to increase. So my questions are (i) what to do to fix the problem and (ii) what to do to avoid the problem if I expand an array again.

Just wondering if there was any resolution to this ?

[BMach]

The bad news is that I have not had suggestions to either question and so I am still stuck with a massive and useless snapshot.

[mdgm-ntgr]

You can't expand a volume by replacing just one disk with a higher capacity one. Your volume capacity is right for 3x500GB or 2x500GB + 1TB. You need two higher capacity disks not just one to expand your volume.

Do you use the Online Filesystem Consistency Check or have the snapshot feature enabled for other reasons?

Best to disable these before attempting to expand the volume. Then re-enable them (if you want) after expansion has completed.

Sounds like you will probably need to backup your data and do a factory default.

[BMach]

Thanks for your comments mdgm.

Just confirming if I have three disks (2 x 500 plus 1 x 1000) and I replace a 500 with a 1000 to give me a three disk system (1 x 500 plus 2 X 1000), I do not get any increased storage.

The current systems shows 869 GB plus 515 GB reserved for snapshots.

[mdgm-ntgr]

Well if you didn't get any expansion putting a second 1TB disk in, even after a few reboots you should backup and do a factory default.

[BMach]

Mdgm, thanks for your comments.

I have done a few reboots to no avail. It has just assigned the extra capacity to snapshots.

Just trying to work if
There is anything I can do to resize the snapshot (I am aware this has been disabled)
What do I need to do so that the next time I try to expand the drive I do not end up with even more snapshot space.

I note your comment to disable the snapshot before doing an expansion and then re-enable afterwards. Does this work. If so, is that a simple means to do snapshot resizing, which is currently not a feature.

I thought the ability to have snapshots was one of the benefits of the Pro series over the Pioneer series when these were the current devices. I use snapshots as part of my backup routine including Readynas Replicate.

[mdgm-ntgr]

I meant disabling tasks that make use of the snapshot space e.g. replicate jobs, online filesystem check then re-enable these after you have expanded your volume. I didn't mean resize the snapshot space.