Re: Regression in mdadm breaks assembling of array

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On Wed, 10 Jul 2019 at 22:59, Stephan Diestelhorst
<stephan.diestelhorst@xxxxxxxxx> wrote:
> On Mon, 8 Jul 2019 at 13:26, Mariusz Dabrowski
> <mariusz.dabrowski@xxxxxxxxx> wrote:
> > On Saturday, July 6, 2019 5:13:14 PM CEST Stephan Diestelhorst wrote:
> > > (Off list, please keep me in CC, thx!)
> > > TL;DR:
> > > https://github.com/neilbrown/mdadm/commit611d95290dd41d73bd8f9cc06f7ec293a40
> > > b819e regresses mdadm and does not let me assemble my main drive due to
> > > kernel error
[..]
> > > Full write-up with logs etc here:
> > > https://forum.manjaro.org/t/mdadm-issues-live-cd-works-existing-install-breaks-fakeraid-imsm/93613
[..]
> > Hello Stephan,
> > I have failed to reproduce your issue.
> > I would like to know how your array was created: in OS using mdadm or with RST PreOS?
>
> This array was created by the laptop manufacturer.  It an Acer S7 191
> which has a peculiar SSD.  It is a dual sided mSATA SSD which has two
> independent mSATA SSDs on either side of the PCB, and they are then
> joined together to a single block device using RAID-0 IMSM.  There is
> something slightly peculiar here.. I got the disk out of a broken S7
> and put it into a different one.  Mentioning that in case the BIOS
> stores any specific data about the disk and that has changed without
> it noticing (but I think that is unlikely).
>
> > Which version of mdadm/RST have you used?
>
> Like I said above, the disk came pre-configured.  I can boot into
> Windows alright and can also inspect the disk with the Intel RST
> tools, currently at 16.0.2.1086.  On the mdadm side, the disk
> assembles with mdadm 4.0 and does not with 4.1; and the commit I
> mention above is the one that makes the difference.  Happy to pull out
> any RST data, here is what I get from the System Report:
>
> Kit installed: 16.0.2.1086
> User interface version: 16.0.2.1086
> Language: English (UK)
> RAID option ROM version: 11.5.0.1582
> Driver version: 16.0.2.1086
> ISDI version: 16.0.2.1086
>
> And then details for the disks and arrays.
> Array ... Size: 122,114 MB ... Available space: 8MB
> Volume ... Size 122,105 MB
> Disk ... Size: 60 GB
> Disk ... Size: 60 GB
>
> The disk is a LITEONIT CMT-64L3M firmware L2C6
>
> > Your notebook is booting in legacy or UEFI mode?
>
> Booting in EFI mode, via rEFInd.

Any additional thoughts on this?  I have now downgraded mdadm to
before the commit I mentioned and it assembles flawlessly.

Thanks,
  Stephan



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