Dear Community,
The old machine stopped working (1 or 2 years ago) since the pendrive broke. Upon replacing the pendrive I figured the board was also toast. This weekend (with some spare hardware) I made an attempt to get it all working. The old array has 8 HDDs connected to a IBM m1015 flashed to IT-Mode.
Not knowing the parity drive I added all old drives (4x3TB and 3x8TB) to a new array without parity drive selected. All except one 8TB drive were detected so I assume this is the parity drive. I shut down the array and proceeded to put the new server together (borrowed pieces - doesn’t matter - had to change things) and some hours of swapping hardware pieces in and out I could get my 4 new harddrives to work (its SAS drives, I thought I bought SATA - NARF). In this process the SAS controller of the old array was swapped in and out too.
Once the new server had been put together and seemed to work I reconnected all the old drives to my IBM m1015 SAS controller and started unRaid.
I selected all the drives but the parity and started the array. For some reason 3of the 3TB drives could not be mounted (Unmountable: Unsupported partition layout)
- My guts tell me they didn’t break all together in a matter of hours.
- SMART gives some warning about age, yes.
- They are all Samsung drives, the other 3TB drive is Toshiba.
- They probably are REISERFS, maybe BTRFS, I don’t remember
- Reiserfsck -check gives Unknown code er3k 127, maybe the superblock is toast, maybe it’s not reiserfs
- I have read in the forums some people experience unmountable problems after upgrading unRaid, but I can not tell the exact version I am coming from (at least 1-2 years or more old)
At this point I am more than willing to ask for advice. Tower diagnostics attached.
My current best idea to solve the issue would be to ddrescue one of the unmountable drives to one of the still not used (much bigger) new drives and then start to tinker with reiserfs and BTRFS rescue tools. Since this will be a try and error approach, maybe it is possible to ddrescue into some form of virtual harddrive and tinker on this one. Has anyone experience with this? Any other advice? Is downgrading worth trying?
TLDR: Migrating an old array with broken pendrive and mainboard to a new one, upgrading UnRaid in the process, suddenly 3 drives are not recognized anymore (Unmountable: Unsupported partition layout).
Yes, redundancy is no backup - I know - I am working on it..
Cheers,
boing
tower-diagnostics-20200905-1805.zip