Re: Dying SD memory? handle_workitem_freefile: got error 5 while accessing filesystem

Am Sun, 24 Sep 2017 10:52:38 +0300
Konstantin Belousov <kostikbel_at_gmail.com> schrieb:

> On Sun, Sep 24, 2017 at 09:31:51AM +0200, O. Hartmann wrote:
> > Running a NanoBSD application on a small PCEngine device, feeding the box with a
> > CURRENT (FreeBSD 12.0-CURRENT #33 r323958: Sat Sep 23 22:19:57 CEST 2017 amd64),
> > booting from a SD memory card.
> > 
> > Recently, when saving configuration changes on the SD memory card, I receive these
> > strange errors:
> > 
> > [...]
> > checksum failed: cg 0, cgp: 0xb478d1d5 != bp: 0x874608df
> > checksum failed: cg 12, cgp: 0xe626d67c != bp: 0x7360c12a
> > checksum failed: cg 0, cgp: 0xb478d1d5 != bp: 0x874608df
> > handle_workitem_freefile: got error 5 while accessing filesystem
> > checksum failed: cg 12, cgp: 0xe626d67c != bp: 0x7360c12a
> > handle_workitem_freefile: got error 5 while accessing filesystem
> > [...]
> > 
> > I do not use MMCCAM in the kernel, but as far as I know, the problem occured in the
> > same time frame. 
> > 
> > The question is: is the SD memory about to die and is to be replaced or is this a bug
> > introduced with the new MMCCAM stuff recently?  
> 
> The messages you see about 'checksum_failed' are due to recently added
> UFS feature where cylinder group blocks are checksummed, and the checksum
> is verified against the known one stored on the volume.
> 
> Were there kernel messages about disk I/O errors before that (as opposed
> to UFS errors about checksums and SU complains) ?

Hello,

no, there were no errors before. The small box is updated on a frequent basis, so I'm
sure there were no errors like those before or any other kind regarding I/O.

I recall having read the commit description about the UFS2 enhancement.

The NanoBSD image is created using UFS2/GPT partitioning scheme, if this is important to
know. 

Regards,

Oliver

-- 
O. Hartmann

Ich widerspreche der Nutzung oder Übermittlung meiner Daten für
Werbezwecke oder für die Markt- oder Meinungsforschung (§ 28 Abs. 4 BDSG).