Yes I check the drive letter to serialnumber after every boot and then
match the order to the original.
testdisk is showing so much wrong data too that I don't believe this
is useful to run.
Is there a way to identify the raid partitions from the separate
devices and then restore those partition information?
I don't really know what to do next now.
Topi
On Sat, 2 Mar 2024 at 14:03, <eyal@xxxxxxxxxxxxxx> wrote:
>
> On 2/3/24 20:55, Topi Viljanen wrote:
> > Hi,
> >
> > syslog entries before any problems:
> >
> > Feb 18 19:52:53 NAS-server kernel: [ 5.755150] md/raid:md0: device
> > sde operational as raid disk 5
> > Feb 18 19:52:53 NAS-server kernel: [ 5.755158] md/raid:md0: device
> > sdb operational as raid disk 0
> > Feb 18 19:52:53 NAS-server kernel: [ 5.755160] md/raid:md0: device
> > sdf operational as raid disk 3
> > Feb 18 19:52:53 NAS-server kernel: [ 5.755162] md/raid:md0: device
> > sdg operational as raid disk 1
> > Feb 18 19:52:53 NAS-server kernel: [ 5.755164] md/raid:md0: device
> > sdd operational as raid disk 2
> > Feb 18 19:52:53 NAS-server kernel: [ 5.755166] md/raid:md0: device
> > sdc operational as raid disk 4
> > Feb 18 19:52:53 NAS-server kernel: [ 5.757272] md/raid:md0: raid
> > level 6 active with 6 out of 6 devices, algorithm 2
> > [...]
> > Feb 18 19:52:54 NAS-server smartd[1188]: Device: /dev/sdc [SAT],
> > ST4000DM004-2CV104, S/N:WFN14WVT, WWN:5-000c50-0bee83a77, FW:0001,
> > 4.00 TB
> > Feb 18 19:52:54 NAS-server smartd[1188]: Device: /dev/sdd [SAT],
> > ST4000DM000-1F2168, S/N:Z305RJAR, WWN:5-000c50-087ccf402, FW:CC54,
> > 4.00 TB
> > Feb 18 19:52:54 NAS-server smartd[1188]: Device: /dev/sdb [SAT],
> > ST4000DM000-1F2168, S/N:Z305RFDP, WWN:5-000c50-087cd03a5, FW:CC54,
> > 4.00 TB
> > Feb 18 19:52:55 NAS-server smartd[1188]: Device: /dev/sde [SAT], WDC
> > WD40EZRX-00SPEB0, S/N:WD-WCC4E7TULA48, WWN:5-0014ee-2b5d93dd9,
> > FW:80.00A80, 4.00 TB
> > Feb 18 19:52:55 NAS-server smartd[1188]: Device: /dev/sdf [SAT],
> > ST4000DM000-1F2168, S/N:Z305RVDW, WWN:5-000c50-087cc5e98, FW:CC54,
> > 4.00 TB
> > Feb 18 19:52:55 NAS-server smartd[1188]: Device: /dev/sdg [SAT],
> > ST4000DM000-1F2168, S/N:Z305RTB8, WWN:5-000c50-087cc9d0b, FW:CC54,
> > 4.00 TB
> >
> > Isn't that quite clear how the order should be? I have added those
> > disks to the create array in that order 0,1,2,3,4,5
> > Should I try something else?
>
> What is meant by '0,1,2,3,4,5'? You mean some order of /dev/sd{x,y,z,...}.
> Now the disk names may be different from your old setup. This is normal.
> You need to use the Serial Numbers to have the correct order.
> So in this case I see
> 0 sdb Z305RFDP now sdx
> 1 sdg Z305RTB8 now sdy
> etc.
>
> Or maybe you already did this, so ignore this note.
>
> > I was wondering if the problem is unused space? The only disk having
> > it partition table have this:
> > Unused Space : before=254896 sectors, after=7856 sectors
> >
> > So if creating a new array starts from the wrong place? Can that be
> > somehow inspected?
> >
> > Topi
> >
> > On Sat, 2 Mar 2024 at 11:46, Pascal Hambourg <pascal@xxxxxxxxxxxxxxx> wrote:
> >>
> >> On 02/03/2024 at 09:50, Topi Viljanen wrote:
> >>>
> >>> I was able to get the order of the devices from old syslog file
> >>> (smartd) and then created the array again:
> >> (...)
> >>> Running fsck caused so many errors that the mounted ext4 was empty.
> >>> I reset the overlay array and now I'm running analyze with testdisk.
> >>
> >> Then I am afraid that the order was wrong and testdisk will not be able
> >> to retrieve much.
> >>
>
> --
> Eyal at Home (eyal@xxxxxxxxxxxxxx)
>
>
