Today I accidently removed a drive while the NAS was on. When I put it back in, everything on it was lost, It created a new empty volume. Now why the hell would it do that? It just feels really dumb that it would do that.
I am running 2 discs with no redundancy for maximum space. Here is the error log. Is there any way to retrieve my lost files? Why did it create a new partition just because I dragged the disc out abruptly? I understand that some files might get corrupt if you do this but to completely clean the whole drive? I mean comeon.....
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Thu Jul 19 20:33:13 CEST 2012 Volume scan failed to run properly. Thu Jul 19 19:57:37 CEST 2012 System is up. Thu Jul 19 19:57:37 CEST 2012 The paths for the shares listed below could not be found. Typically, this occurs when the ReadyNAS is unable to access the data volume.
flexget media src backup
Thu Jul 19 19:56:47 CEST 2012 Volume scan failed to run properly. Thu Jul 19 19:53:20 CEST 2012 New data volume has been successfully created. [Volume E] Thu Jul 19 19:53:15 CEST 2012 Volume e created successfully. Thu Jul 19 19:43:18 CEST 2012 New disk detected. If multiple disks have been added, they will be processed one at a time. Please do not remove any added disk(s) during this time. [Disk 1] Thu Jul 19 19:42:53 CEST 2012 Volume will be removed as lost of disk, please reboot ReadyNas device for continue. Thu Jul 19 19:42:52 CEST 2012 A disk was removed from the ReadyNAS. Thu Jul 19 19:42:52 CEST 2012 Disk removal detected. [Disk 1]
Re: ReadyNas NV+ v2 Disc empty after abrupt removal
When you hot-add a disk (add while NAS is on) it is wiped. This is normal behaviour for the NAS. A removed disk would become out of sync with the other disk(s). You could have tried powering down, removing disk 2, putting disk 1 in and powering on to recover your data.
Your disk has been wiped so your data would be gone. You could try paying a data recovery service to see if they can recover some data but I wouldn't be that hopeful.
Re: ReadyNas NV+ v2 Disc empty after abrupt removal
Man, I wish I had knew that....... I guess you learn something everyday (quite a hard lesson). One question, would this mean that if theres a power failure and the NAS restarts, would I still lose all my files because it would get out of sync?
Thanks for your reply mate, I will try with different partition recovery software.
Re: ReadyNas NV+ v2 Disc empty after abrupt removal
mdgm wrote:
When you hot-add a disk (add while NAS is on) it is wiped. This is normal behaviour for the NAS. A removed disk would become out of sync with the other disk(s).
I see quite the issue with this logic or rather a huge flaw. There is no way I would call removing/replacing an existing drive the same as adding a new drive. Surely, the NAS should be smart enough to realize the re-inserted drive isn't new. Rather, it's was already in action.
Really, how hard would it be to flag the drive as installed and treat it accordingly rather then blindly treating every drive as new.
Re: ReadyNas NV+ v2 Disc empty after abrupt removal
Charles R wrote:
...Surely, the NAS should be smart enough to realize the re-inserted drive isn't new. Rather, it's was already in action.
Really, how hard would it be to flag the drive as installed and treat it accordingly rather then blindly treating every drive as new.
Perhaps not as easy as you are thinking. Even one disk write with the disk removed would bring the array out of sync. Even with RAID-0 the data is physically spread across all the drives in the array.
Re: ReadyNas NV+ v2 Disc empty after abrupt removal
mdgm wrote:
In this case it looks like there's a separate RAID-0 volume on each disk but still there's the OS partition that would've been mirrored.
In this case... I am running 2 discs with no redundancy for maximum space... I still find it scary it would simply wipe the drive. During creation I can't believe it doesn't tag the drive (identify it) and when it's inserted how hard would it be to see it has been in service and ask what options are available before wiping it.
For me it simply comes down to there is a ton of (assuming it contains valid) data available and it makes zero sense to blindly delete it. Now if the RAID is going to get broken (and not repairable) the moment the drive is removed why wouldn't you stop writing and alert the user? Giving them the option of inserting the missing drive... I know things are never as easy as they seem but in this case being a NAS I would think the OS would do what it could...
Re: ReadyNas NV+ v2 Disc empty after abrupt removal
Not sure about the v2 but with the other models there is life support mode. If a disk is removed accidentally and this results in the failure of a volume you can power down, put the disk back in then power on again and no harm done. If there is a problem the NAS would most likely fail to complete the boot process and you would then contact support.
In any case important data primarily stored on the NAS should be backed up regularly. User error is one of a variety of things that can cause loss of data. You can't program around every possible kind of user error.
It's always been the case that disks hot-added (added while NAS is on) are wiped. It's expected behaviour.
Re: ReadyNas NV+ v2 Disc empty after abrupt removal
mdgm wrote:
In any case important data primarily stored on the NAS should be backed up regularly. User error is one of a variety of things that can cause loss of data. You can't program around every possible kind of user error.
True. However at the same time a NAS (data protection driven) has an inherent obligation to protect its data on some level. Even though one can't stop someone from breaking down your door it doesn't prevent you from installing a lock and having it come in handy on occasion.
