Hi!
VVM > > > Hyper-V admins need _worked_ Linux v3.4.X / v3.3.X / v3.2.X
VVM > > >
VVM > > > Please, _fix_ errors related "use hv_storvsc instead of ata_piix to
VVM > > > handle the IDE disks devices ( but not for the CD-ROM)"
K.Y.S. >> {
Clearly I cannot tell you anything about this that you don't know!
Looking at the rules for stable tree patches,
this patch does not satisfy the requirement that the patch fix a bug
since we are changing the behavior here of the ata driver to accommodate Hyper-V.
I don't know how much flexibility you have here for taking patches that improve
the general usability of Linux in different environments.
All I can say is that It will be nice to have this patch in previous stable releases.
}
This is _real_ bug
{ P.S.
Dear K.Y., please read _again_ my letter
Sent: Monday, April 02, 2012 1:46 PM
}
> Lots of things would be "nice",
> but as this doesn't meet the stable_kernel_rules.txt rules, sorry, I can't take them.
IMHO, patches "does meet the stable_kernel_rules.txt rules" by _all_ criterias . . .
See info correlated with rules:
==
Rules on what kind of patches are accepted, and which ones are not, into the
"-stable" tree:
{
- It must be obviously correct and tested.
Tested ( but, in early implementaition): Ubuntu 12.04 + OpenSUSE
}
{
- It cannot be bigger than 100 lines, with context.
79 lines
+
47 lines
}
{
- It must fix only one thing.
Yes
}
{
- It must fix a real bug that bothers people (not a, "This could be a
problem..." type thing).
Is real bug: see URLs in my e-mails about problem
+ see tranlate from Russian language issue described by Maksim Kramarenko:
http://lists.debian.org/debian-russian/2012/01/msg00324.html
==
. . .
At the conclusion of the system through the halt or when sending a signal shutdown by ACPI to power down the console
fell errors:
http://www.k-max.name/wp-content/uploads/2012/01/hyper-v.png
Errors do not interfere with work, but sneaking suspicion about future problems with the hard drive ...
. . .
in general, the source of the problem as follows:
After [VVM: turn On in kernel source] Hyper-V modules [compile and start use], a hard disk was determined as 2 with the
same UUID.
. . .
Here are screenshots of what is happening:
connected to a drive:
http://www.k-max.name/wp-content/uploads/2012/01/hdd-e1327750214479.png
it is defined as a 2:
http://www.k-max.name/wp-content/uploads/2012/01/2hdd.png
Naturally, the same UUID:
http://www.k-max.name/wp-content/uploads/2012/01/blkid.png
That's what tells us the directory / dev:
http://www.k-max.name/wp-content/uploads/2012/01/uuid.png
==
}
{
- It must fix a problem that causes a build error (but not for things
marked CONFIG_BROKEN), an oops, a hang, data corruption, a real
security issue, or some "oh, that's not good" issue. In short, something
critical.
- New device IDs and quirks are also accepted.
not related this patch
}
{
- No "theoretical race condition" issues, unless an explanation of how the
race can be exploited is also provided.
- It cannot contain any "trivial" fixes in it (spelling changes,
whitespace cleanups, etc).
No "theoretical" , no "trivial"
}
- It must follow the Documentation/SubmittingPatches rules.
Prepare patches -- this job duty of Microsoft employee
- It or an equivalent fix must already exist in Linus' tree (upstream).
Yes
==
Best regards, Victor Miasnikov
Blog: http://vvm.blog.tut.by/
> -----Original Message-----
> From: Victor Miasnikov [mailto:[email protected]]
> Sent: Monday, June 04, 2012 8:33 AM
> To: Greg KH; KY Srinivasan
> Cc: [email protected]; Jonathan Nieder; [email protected];
> Mike Sterling
> Subject: Re: Linux on Hyper-V 1) cd006086fa5d ata_piix: defer disks to the Hyper-
> V drivers by default 2) db63a4c8115a libata: add a host flag to ignore detected
> ATA device FW: use hv_storvsc instead of ata_piix to handle the IDE disks devices
> ( but not for the ...
>
> Hi!
>
> VVM > > > Hyper-V admins need _worked_ Linux v3.4.X / v3.3.X / v3.2.X
Victor, what distro are you using. I can help you with the ata patch on specific set of distros of interest.
If the system that you are interested loads the ata_piix module, we can solve the issue on hand using
modprobe rules rather than a patch against the ata driver. Let me know.
Regards,
K. Y
>
Hi,
Victor Miasnikov wrote:
> + see tranlate from Russian language issue described by Maksim Kramarenko:
> http://lists.debian.org/debian-russian/2012/01/msg00324.html
>> Correct, that is loaded without error, sleep and wake, for a small exception:
>>
>> At the conclusion of the system through the halt or when sending a
>> signal shutdown by ACPI to power down the console fell errors:
>> http://www.k-max.name/wp-content/uploads/2012/01/hyper-v.png
[That image shows the message
exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
ata1.00: failed command: STANDBY IMMEDIATE
]
>> Errors do not interfere with work, but sneaking suspicion about
>> future problems with the hard drive ...
[...]
>> in general, the source of the problem as follows:
>> After [VVM: turn On in kernel source] Hyper-V modules [compile and
>> start use], a hard disk was determined as 2 with the same UUID.
[...]
>> connected to a drive:
>> http://www.k-max.name/wp-content/uploads/2012/01/hdd-e1327750214479.png
>> it is defined as a 2:
>> http://www.k-max.name/wp-content/uploads/2012/01/2hdd.png
>> Naturally, the same UUID:
>> http://www.k-max.name/wp-content/uploads/2012/01/blkid.png
>> That's what tells us the directory / dev:
>> http://www.k-max.name/wp-content/uploads/2012/01/uuid.png
Thanks --- I think this is what Greg was asking for.
If I understand correctly, the problem is that ata_piix and hv_storvsc
both claim the (virtual) hard disk. That sounds worth fixing. The
patch works by making ata_piix skip the disk during enumeration if
hv_storvsc is enabled as a built-in driver or module.
A workaround is to blacklist the ata_piix module. However, that means
losing access to CD and DVD drives which are exposed by ata_piix and
not hv_storvsc.
Hoping that clarifies,
Jonathan
