I recently upgraded to V6 and replaced on of my drives with a larger one.  All looked good except when finally  closing the case I must have knocked the cable to the parity drive, which showed as missing, so I reconnected the parity drive, rebooted and a parity check was completed.  The array has 3 shares on it  one of the shares which had several tb of data in it shows as empty. The data would still seem to be there as the free space on the array is as it should be with all the data in place but I cant access the data that was in one of the directories.

 

Any help much appreciated.

 

Regards

 

Tippo

Post your diagnostics file (Tools->Diagnostics) as it might allow us to make a more educated guess on what might be wrong.

 

Just a check - when upgrading the drive I hope you did not at any point select the "Format" option? 

Hi, thanks for response. Syslog attached. I'm not sure if the data disappeared after the upgrade or after I temporarily lost the parity disk but I think possibly the latter.

Thanks

Tippo

syslog.txt

Hi, thanks for response. Syslog attached. I'm not sure if the data disappeared after the upgrade or after I temporarily lost the parity disk but I think possibly the latter.

Thanks

Tippo

Post your diagnostics file (Tools->Diagnostics) instead

Sorry, please find diagnostics attached.

 

Thanks

Tippo

tower-diagnostics-20160502-2010.zip

Is it the TV2 share you're having an issue with? I am suspecting filesystem corruption on disk1.

 

Your OP leaves out some details that raise some questions though. It sounds like you are saying that you replaced a drive with a larger drive but you don't actually mention rebuilding that drive. Instead you say parity was missing so you reconnected it and did a parity check.

 

Did you actually replace a disk with a larger disk? If so which disk#? Did the system let you rebuild the contents of the replaced disk onto the larger disk? I don't see how since you said parity was missing.

 

Think carefully about what you did and see if you can't give us a more complete description of what happened.

Thanks for the response, yes it is TV2 which now appears to have no files in it.

Sequence of events as best I can remember ( bit of a saga due to my ignorance).

The system with 5 disks was full so I added an new Western Digital 1 TB drive and it started rebuilding the array as I expected. When finished all was good except I had no extra space as my licence didn't cover 6 disks. What had happened was that the new WD disk had been put in place of an existing Seagate 1 tb ( disk6).  I upgraded the licence but could not get the seagate disk to add to the array. It did add on one attempt I copied a few files over, and then it went red ball again.

Assuming the disk was faulty and it was a coincidence it became faulty when I added a new disk, I bought a new Seagate 1tb drive  but could not get this to work correctly either. ( Many attempts with both the Seagate disks, including attempted preclear etc. but they allways failed. I took the new disk back to the shop  and had it checked it worked perfectly with Windows etc. so I think its a firmware problem).

As a final attempt to get the Seagate disk to work I backed up my USB and upgraded to V6 from my previous 5.XX but same results.

I then purchased a 2TB WD drive which added to the array no problem.

At this stage the new drive was not physically installed in the case, just had it connected and lying on the chassis so as a final step I shut the machine down and installed the new WD in the case. Whilst doing this I must have disturbed the parity drive as it showed as missing so I shut down again reconnected the parity drive, restarted and it did a parity rebuild.

After this I noticed that the TV2 directory was empty. To be honest I'm not sure at what point in the process the directory started showing as empty. I'm 80%  sure that it was OK prior to adding the new WD 2T drive but cant be sure whether the issue occured after adding this or after the parity drive was disconnected.

 

Thanks for your help.

 

Tippo

Check Disk Filesystems on disk1.

Thanks! Will try tonight

 

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I ran the file system check and then ran again with  - - rebuild tree and now I have my files back.  Didn't have time  to check if all there but certainly vast majority are.

Thanks for the help much appreciated.

Should I run a parity check now or no need.

 

Cheers

Tippo

 

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