* [meta-raspberrypi] Read-Only RootFS is not read only
@ 2013-07-30 10:43 Rich Bayliss
2013-08-02 12:47 ` Paul Eggleton
0 siblings, 1 reply; 7+ messages in thread
From: Rich Bayliss @ 2013-07-30 10:43 UTC (permalink / raw)
To: Yocto Project
I am trying to build for Raspberry Pi including "read-only-rootfs" in
my image features. My aim is to have my SD Card read-only and at some
point add a read-write overlay to certain directories. This should
enable my system to boot fresh each time, and have some persistent
storage for user files etc.
However, after building my image I can SSH into the system and issue
"touch test" to create a file in my home directory, then after a
reboot it is still there. That isn't very read-only :)
Am I missing something, or is this working incorrectly?
--
Rich Bayliss
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [meta-raspberrypi] Read-Only RootFS is not read only
2013-07-30 10:43 [meta-raspberrypi] Read-Only RootFS is not read only Rich Bayliss
@ 2013-08-02 12:47 ` Paul Eggleton
2013-08-04 0:27 ` Rich Bayliss
0 siblings, 1 reply; 7+ messages in thread
From: Paul Eggleton @ 2013-08-02 12:47 UTC (permalink / raw)
To: Rich Bayliss, Andrei Gherzan; +Cc: yocto
Hi Rich,
On Tuesday 30 July 2013 11:43:43 Rich Bayliss wrote:
> I am trying to build for Raspberry Pi including "read-only-rootfs" in
> my image features. My aim is to have my SD Card read-only and at some
> point add a read-write overlay to certain directories. This should
> enable my system to boot fresh each time, and have some persistent
> storage for user files etc.
>
> However, after building my image I can SSH into the system and issue
> "touch test" to create a file in my home directory, then after a
> reboot it is still there. That isn't very read-only :)
>
> Am I missing something, or is this working incorrectly?
It sounds like it's working incorrectly. Since meta-raspberrypi constructs the
SD card image using its own custom class I wonder if it has anything to do
with that. Andrei, do you know anything about this?
BTW, are you using sysvinit or systemd in this image?
Cheers,
Paul
--
Paul Eggleton
Intel Open Source Technology Centre
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [meta-raspberrypi] Read-Only RootFS is not read only
2013-08-02 12:47 ` Paul Eggleton
@ 2013-08-04 0:27 ` Rich Bayliss
2013-08-04 22:35 ` Paul Eggleton
0 siblings, 1 reply; 7+ messages in thread
From: Rich Bayliss @ 2013-08-04 0:27 UTC (permalink / raw)
To: Paul Eggleton; +Cc: Yocto Project
I am using the standard sysvinit/systemd - I haven't specified either,
so whichever is default.
Cheers,
Rich
On 2 August 2013 13:47, Paul Eggleton <paul.eggleton@linux.intel.com> wrote:
> Hi Rich,
>
> On Tuesday 30 July 2013 11:43:43 Rich Bayliss wrote:
>> I am trying to build for Raspberry Pi including "read-only-rootfs" in
>> my image features. My aim is to have my SD Card read-only and at some
>> point add a read-write overlay to certain directories. This should
>> enable my system to boot fresh each time, and have some persistent
>> storage for user files etc.
>>
>> However, after building my image I can SSH into the system and issue
>> "touch test" to create a file in my home directory, then after a
>> reboot it is still there. That isn't very read-only :)
>>
>> Am I missing something, or is this working incorrectly?
>
> It sounds like it's working incorrectly. Since meta-raspberrypi constructs the
> SD card image using its own custom class I wonder if it has anything to do
> with that. Andrei, do you know anything about this?
>
> BTW, are you using sysvinit or systemd in this image?
>
> Cheers,
> Paul
>
> --
>
> Paul Eggleton
> Intel Open Source Technology Centre
--
Rich Bayliss
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [meta-raspberrypi] Read-Only RootFS is not read only
2013-08-04 0:27 ` Rich Bayliss
@ 2013-08-04 22:35 ` Paul Eggleton
2013-08-04 23:51 ` Rich Bayliss
0 siblings, 1 reply; 7+ messages in thread
From: Paul Eggleton @ 2013-08-04 22:35 UTC (permalink / raw)
To: Rich Bayliss; +Cc: yocto
On Sunday 04 August 2013 01:27:01 Rich Bayliss wrote:
> On 2 August 2013 13:47, Paul Eggleton <paul.eggleton@linux.intel.com> wrote:
> > On Tuesday 30 July 2013 11:43:43 Rich Bayliss wrote:
> >> I am trying to build for Raspberry Pi including "read-only-rootfs" in
> >> my image features. My aim is to have my SD Card read-only and at some
> >> point add a read-write overlay to certain directories. This should
> >> enable my system to boot fresh each time, and have some persistent
> >> storage for user files etc.
> >>
> >> However, after building my image I can SSH into the system and issue
> >> "touch test" to create a file in my home directory, then after a
> >> reboot it is still there. That isn't very read-only :)
> >>
> >> Am I missing something, or is this working incorrectly?
> >
> > It sounds like it's working incorrectly. Since meta-raspberrypi constructs
> > the SD card image using its own custom class I wonder if it has anything
> > to do with that. Andrei, do you know anything about this?
> >
> > BTW, are you using sysvinit or systemd in this image?
>
> I am using the standard sysvinit/systemd - I haven't specified either,
> so whichever is default.
Except the default depends upon what DISTRO you are using. Which DISTRO are
you using - "poky" or something else?
Cheers,
Paul
--
Paul Eggleton
Intel Open Source Technology Centre
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [meta-raspberrypi] Read-Only RootFS is not read only
2013-08-04 22:35 ` Paul Eggleton
@ 2013-08-04 23:51 ` Rich Bayliss
2013-08-05 10:12 ` Andrei Gherzan
0 siblings, 1 reply; 7+ messages in thread
From: Rich Bayliss @ 2013-08-04 23:51 UTC (permalink / raw)
To: Paul Eggleton; +Cc: Yocto Project
Sorry Paul - I am new to all this. I have checked and I am using Poky (1.4)
Rich
On 4 August 2013 23:35, Paul Eggleton <paul.eggleton@linux.intel.com> wrote:
> On Sunday 04 August 2013 01:27:01 Rich Bayliss wrote:
>> On 2 August 2013 13:47, Paul Eggleton <paul.eggleton@linux.intel.com> wrote:
>> > On Tuesday 30 July 2013 11:43:43 Rich Bayliss wrote:
>> >> I am trying to build for Raspberry Pi including "read-only-rootfs" in
>> >> my image features. My aim is to have my SD Card read-only and at some
>> >> point add a read-write overlay to certain directories. This should
>> >> enable my system to boot fresh each time, and have some persistent
>> >> storage for user files etc.
>> >>
>> >> However, after building my image I can SSH into the system and issue
>> >> "touch test" to create a file in my home directory, then after a
>> >> reboot it is still there. That isn't very read-only :)
>> >>
>> >> Am I missing something, or is this working incorrectly?
>> >
>> > It sounds like it's working incorrectly. Since meta-raspberrypi constructs
>> > the SD card image using its own custom class I wonder if it has anything
>> > to do with that. Andrei, do you know anything about this?
>> >
>> > BTW, are you using sysvinit or systemd in this image?
>>
>> I am using the standard sysvinit/systemd - I haven't specified either,
>> so whichever is default.
>
> Except the default depends upon what DISTRO you are using. Which DISTRO are
> you using - "poky" or something else?
>
> Cheers,
> Paul
>
> --
>
> Paul Eggleton
> Intel Open Source Technology Centre
--
Rich Bayliss
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [meta-raspberrypi] Read-Only RootFS is not read only
2013-08-04 23:51 ` Rich Bayliss
@ 2013-08-05 10:12 ` Andrei Gherzan
2013-08-21 15:16 ` Andrei Gherzan
0 siblings, 1 reply; 7+ messages in thread
From: Andrei Gherzan @ 2013-08-05 10:12 UTC (permalink / raw)
To: Rich Bayliss; +Cc: Paul Eggleton, Yocto Project
[-- Attachment #1: Type: text/plain, Size: 1911 bytes --]
On Mon, Aug 5, 2013 at 2:51 AM, Rich Bayliss <richbayliss@gmail.com> wrote:
> Sorry Paul - I am new to all this. I have checked and I am using Poky (1.4)
>
> Rich
>
> On 4 August 2013 23:35, Paul Eggleton <paul.eggleton@linux.intel.com>
> wrote:
> > On Sunday 04 August 2013 01:27:01 Rich Bayliss wrote:
> >> On 2 August 2013 13:47, Paul Eggleton <paul.eggleton@linux.intel.com>
> wrote:
> >> > On Tuesday 30 July 2013 11:43:43 Rich Bayliss wrote:
> >> >> I am trying to build for Raspberry Pi including "read-only-rootfs" in
> >> >> my image features. My aim is to have my SD Card read-only and at some
> >> >> point add a read-write overlay to certain directories. This should
> >> >> enable my system to boot fresh each time, and have some persistent
> >> >> storage for user files etc.
> >> >>
> >> >> However, after building my image I can SSH into the system and issue
> >> >> "touch test" to create a file in my home directory, then after a
> >> >> reboot it is still there. That isn't very read-only :)
> >> >>
> >> >> Am I missing something, or is this working incorrectly?
> >> >
> >> > It sounds like it's working incorrectly. Since meta-raspberrypi
> constructs
> >> > the SD card image using its own custom class I wonder if it has
> anything
> >> > to do with that. Andrei, do you know anything about this?
> >> >
> >> > BTW, are you using sysvinit or systemd in this image?
> >>
> >> I am using the standard sysvinit/systemd - I haven't specified either,
> >> so whichever is default.
> >
> > Except the default depends upon what DISTRO you are using. Which DISTRO
> are
> > you using - "poky" or something else?
> >
> > Cheers,
> > Paul
> >
> > --
> >
> > Paul Eggleton
> > Intel Open Source Technology Centre
>
Will check on this tomorrow. I've been on the roads these days.
--
*Andrei Gherzan*
m: +40.744.478.414 | f: +40.31.816.28.12
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^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [meta-raspberrypi] Read-Only RootFS is not read only
2013-08-05 10:12 ` Andrei Gherzan
@ 2013-08-21 15:16 ` Andrei Gherzan
0 siblings, 0 replies; 7+ messages in thread
From: Andrei Gherzan @ 2013-08-21 15:16 UTC (permalink / raw)
To: Rich Bayliss; +Cc: Paul Eggleton, Yocto Project
[-- Attachment #1: Type: text/plain, Size: 2596 bytes --]
On Mon, Aug 5, 2013 at 1:12 PM, Andrei Gherzan <andrei@gherzan.ro> wrote:
>
>
>
> On Mon, Aug 5, 2013 at 2:51 AM, Rich Bayliss <richbayliss@gmail.com>wrote:
>
>> Sorry Paul - I am new to all this. I have checked and I am using Poky
>> (1.4)
>>
>> Rich
>>
>> On 4 August 2013 23:35, Paul Eggleton <paul.eggleton@linux.intel.com>
>> wrote:
>> > On Sunday 04 August 2013 01:27:01 Rich Bayliss wrote:
>> >> On 2 August 2013 13:47, Paul Eggleton <paul.eggleton@linux.intel.com>
>> wrote:
>> >> > On Tuesday 30 July 2013 11:43:43 Rich Bayliss wrote:
>> >> >> I am trying to build for Raspberry Pi including "read-only-rootfs"
>> in
>> >> >> my image features. My aim is to have my SD Card read-only and at
>> some
>> >> >> point add a read-write overlay to certain directories. This should
>> >> >> enable my system to boot fresh each time, and have some persistent
>> >> >> storage for user files etc.
>> >> >>
>> >> >> However, after building my image I can SSH into the system and issue
>> >> >> "touch test" to create a file in my home directory, then after a
>> >> >> reboot it is still there. That isn't very read-only :)
>> >> >>
>> >> >> Am I missing something, or is this working incorrectly?
>> >> >
>> >> > It sounds like it's working incorrectly. Since meta-raspberrypi
>> constructs
>> >> > the SD card image using its own custom class I wonder if it has
>> anything
>> >> > to do with that. Andrei, do you know anything about this?
>> >> >
>> >> > BTW, are you using sysvinit or systemd in this image?
>> >>
>> >> I am using the standard sysvinit/systemd - I haven't specified either,
>> >> so whichever is default.
>> >
>> > Except the default depends upon what DISTRO you are using. Which DISTRO
>> are
>> > you using - "poky" or something else?
>> >
>> > Cheers,
>> > Paul
>> >
>> > --
>> >
>> > Paul Eggleton
>> > Intel Open Source Technology Centre
>>
>
> Will check on this tomorrow. I've been on the roads these days.
>
Summary:
I managed to find the root of the problem. We used to have an old fstab
which i'm going to get rid of with a patch today - as the default one is
working ok and fixes this issue.
The problem was related to:
tmpfs /run tmpfs
mode=0755,nodev,nosuid,strictatime 0 0
We didn't have this specified in our fstab and would make udevd to keep the
device busy => remount fail.
Thank you for reporting this. And sorry for being late with investigation -
managed to get some vacation :)
--
*Andrei Gherzan*
m: +40.744.478.414 | f: +40.31.816.28.12
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^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2013-08-21 15:16 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2013-07-30 10:43 [meta-raspberrypi] Read-Only RootFS is not read only Rich Bayliss
2013-08-02 12:47 ` Paul Eggleton
2013-08-04 0:27 ` Rich Bayliss
2013-08-04 22:35 ` Paul Eggleton
2013-08-04 23:51 ` Rich Bayliss
2013-08-05 10:12 ` Andrei Gherzan
2013-08-21 15:16 ` Andrei Gherzan
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