CURRENT on Mac Mini does not boot for a week...

[Milan Obuch]

Hi,

new issue - I can't boot freshly build CURRENT at Nov 30 17:51 UTC.
Last working kernel is built Nov 26 18:46 UTC from sources csupped
maybe two hours ago.

Excerpt from working kernel's dmesg:

ada0 at ata1 bus 0 scbus1 target 0 lun 0
ada0: <WDC WD1000VE-00KWT0 01.03K01> ATA-7 device
ada0: 100.000MB/s transfers (UDMA5, PIO 8192bytes)
ada0: 95396MB (195371568 512 byte sectors: 16H 63S/T 16383C)
ada0: Previously was known as ad0
Trying to mount root from ufs:/dev/ad0s7 [rw]...

<end of dmesg>

ada0 at ata1 bus 0 scbus1 target 0 lun 0
ada0: <WDC WD1000VE-00KWT0 01.03K01> ATA-7 device
ada0: 100.000MB/s transfers (UDMA5, PIO 8192bytes)
ada0: 95396MB (195371568 512 byte sectors: 16H 63S/T 16383C)
ada0: Previously was known as ad0
GEOM_PART: integrity check failed (ada0, APM)
Trying to mount root from ufs:/dev/ad0s7 [rw]...
mountroot: waiting for device /dev/ad0s7 ...
Mounting from ufs:/dev/ada0s7 failed with error 19.
Loader variables:
  vfs.root.mountfrom=ufs:/dev/ad0s7
  vfs.root.mountfrom.options=rw

Manual root filesystem specification:

As partition map is rejected, root file system can't be mounted from
disk, but I can mount root file system from USB flash disk.

Any idea here what could be wrong? Is this integrity check something
just freshly introduced in CURRENT? What does it check, actually?
Everything worked in 9 and still works in yesterday compiled
9-PRERELEASE, it worked with 10-CURRENT up until a week (see at the
beginning of this message), but not after that point.

Regards,
Milan