Actually by testing boot sequence i mean correctness of state of the M/c after boot up.So consequently correctness of boot up operations.
Thanks,
Abhish
--- On Tue, 13/1/09, Peter Teoh <htmldeveloper@xxxxxxxxx> wrote:
> From: Peter Teoh <htmldeveloper@xxxxxxxxx>
> Subject: Re: Testing Boot Sequence
> To: abhish_agr@xxxxxxxxxxx
> Cc: "Erik Mouw" <mouw@xxxxxxxxxxxx>, kernelnewbies@xxxxxxxxxxxx
> Date: Tuesday, 13 January, 2009, 2:17 PM
> may be u have used the term wrongly....but my new
> understanding is
> that u want to verify correctness of bootup operations,
> something like
> that of TPM hardware.
>
> On Tue, Jan 13, 2009 at 1:23 PM, abhish agarwal
> <abhish_agr@xxxxxxxxxxx> wrote:
> >
> > Hi,
> >
> > Sorry to all for Ccing particular emailid's.
> >
> > Boot sequence i have drawn is as follows::
> >
> > 1) BIOS loades a small program which further loades
> boot program.
> >
> >
> >
> > 2) boot---->loading
> kernel-------------->countdown can be interrupted(set of
> commands are available including loading a different
> kernel)------>boot command------->initializes
> CPU(including run time stack and virtual memory mapping)---|
> > |
> > |
> > |
> >
> -------------------------------------------------------
> > |
> |
> >
> > M/c Dependent functions
> M/C Independent functions
> > |
> |
> > |---1)Mutexes
> |
> > |
> |--1)Mounting Root File system
> > |---2)Virtual memory table
> |
> > |
> |--2)Initialize different DS
> > |---3)Configuring I/O Devices
> |
> >
> > |
> |
> > |
> |
> >
> ------------------------------------------
> > |
> > System processes are made
> runnable
> > |
> > User processes are brought into
> memory
> >
> >
> > Now to make sure that every thing is fine after boot
> up what all thing can i test?? One thing i mentioned in my
> previous mail is about dmesg o/p for any knd of warning or
> error during boot up. Apart from that what all i can test.
> >
> > Thanks
> > Abhish
> >
> > --- On Tue, 13/1/09, Erik Mouw
> <mouw@xxxxxxxxxxxx> wrote:
> >
> >> From: Erik Mouw <mouw@xxxxxxxxxxxx>
> >> Subject: Re: Testing Boot Sequence
> >> To: "abhish agarwal"
> <abhish_agr@xxxxxxxxxxx>
> >> Cc: "Kernelnewbies"
> <kernelnewbies@xxxxxxxxxxxx>
> >> Date: Tuesday, 13 January, 2009, 12:13 AM
> >> On Sun, 11 Jan 2009 17:59:17 +0530 (IST) abhish
> agarwal
> >> <abhish_agr@xxxxxxxxxxx> wrote:
> >> > I was trying to create set of testcases for
> boot
> >> sequence.But i am little bit confused how to
> start.what i
> >> have thought till now is first i will test dmesg
> output to
> >> make sure there is no error and failure,and also
> through rc
> >> script i find out what all files and directories
> are created
> >> during startup.What other things can i do please
> give me
> >> some input.
> >>
> >> For starters you could tell us what exactly you
> would try
> >> to test.
> >> "Testing boot sequence" is quite a broad
> thing.
> >>
> >> Oh, and just send your message to the list.
> Randomly
> >> CC'ing subscribers
> >> isn't any faster, just more annoying for those
> >> subscribers.
> >>
> >>
>
> some ideas here:
>
>
> a. verification means comparing with some predetermined /
> precalculated value. So possibly if u stored checksums
> for important
> files/directories like /boot directory, and put this
> verification/self-correction early enough into the kernel
> codes,
> possibly u can do BOTH verification + self-correction at
> the same
> time....in case filesystem got corrupted.
>
> b. hardware verification? this is hard....
>
> c. one area is in resume time - after resuming from
> hibernation
> mode, need to go through all the hardware initialization
> (already
> done) + verification (not sure if it is done, and how).
>
> d. many verification, can be done at the userspace level.
> so
> possibly u should spawn a userspace process to continue the
> system
> verification beyond booting up.
>
> e. post process startup verification - ensuring all the
> necessary
> processes are started up. but then this becomes more like
> a system
> management tool?
>
>
> --
> Regards,
> Peter Teoh
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