I'm attempting to upgrade a ReadyNAS NV+ to four 2TB Seagate ST32000542AS. I made sure these were supported under the compatibility list ... 7. The Seagate 2TB LP drive have only been qualified on the following ReadyNAS Products Duo, NV+, NVX, Pro Pioneer and Pro Business.So the drives initialized and sync into the volume correctly, but when they goto expand, I get this error ..."Disk capacity expansion error. resize2fs"The Volume Settings provide this info ... 1630 GB (81%) of 2010 GB used Ch 1 : Seagate ST32000542AS [1862 GB] 1859 GB allocated Ch 2 : Seagate ST32000542AS [1862 GB] 1859 GB allocated Ch 3 : Seagate ST32000542AS [1862 GB] 1859 GB allocated Ch 4 : Seagate ST32000542AS [1862 GB] 1859 GB allocatedAny help is appreciated.Thanks.peet

Are you running the latest RAIDiator, that is 4.1.6?Can you go to Status > Logs > Download All Logs > Volume.log? What's the "block size"?

Yup 4.1.6Block size: 4096thanks.peet

peet1 wrote:Block size: 4096As expected. That's your problem. I found another thread with the same issue here: viewtopic.php?f=66&t=28745Basically you could get a forced/manual expansion to 5TB or backup your data (also do a System > Config backup to backup most of your settings), then factory default, restore config backup, then restore backup.I'd consider backing up your data and then try using the force expansion add-on: http://www.readynas.com/download/addons ... on_1.0.binThe force expansion add-on should manually expand your volume to 5TB.

Thanks for the help, but I'm not sure I understand your response.Do I have two choices? Are they as follows; Install the force expansion add on and end up with 5TB? OR backup everything do a factory restore and end up with 6TB?thanks.peet

Pretty much. When RAIDiator 4 was introduced, the block size for new volumes was changed to 16k (16384) from 4k (4096). This new block size is used for better performance and enables online expansion.The block size is set when the volume is created and cannot be changed. Currently there is an issue meaning that the current limit for expansion using the old block size is 5TB. Data will be inaccessible during this time. It may take a day or two.If you try the force expansion add-on, I would still backup your data first just to be safe.

Disk capacity expansion error. resize2fs (Readynas NV+F

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corriglionni
Aspirant
Mar 09, 2011
Same problem for me and same complaint about notice. I read several post on expanding a ReadyNas NV+ but not once did I see anything about the expansion errors. Lucky for me I kept my original 4 750GB seagates numbered, so after 3 days of swapping out the drives I'm forced to put all four original drives back in and then backup everything to one of the 2TB Seagates. Kinda sucks. My data is the most important thing, but could Netgears people please post on the NV+ or any others affected compatibility page a warning about the block size issue. :idea:
mdgm-ntgr
NETGEAR Employee Retired
Mar 09, 2011
corrilglionni you can only put all the original drives back in to do that if you powered down then removed all the old disks at once (which I think you didn't do). If you removed the drives one at a time and replaced them with other ones the old disks would've become out of sync with one another.
janomdahl
Aspirant
Feb 05, 2013
Exact same problem here wity my NV+. Just bought 4 x 2 tb WB Red. Useless. Any helpfrom Netgear customer support available here?
lpraml
Aspirant
Oct 27, 2013
so here i am - same problem, after 1 week of changing Disk for Disk and one "almost-disaster" i thought now i am at the end of that dark tunnnel - just to receive that same error-message - is ther any new developement or do i really have to to a factory reset?
StephenB
Guru - Experienced User
Oct 27, 2013
If you have a backup, then maybe do the factory reset. It is painful, but more certain.

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Disk capacity expansion error. resize2fs (Readynas NV+F

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