Re: [qubes-users] Read-only file system in applVM

[Foppe de Haan]

On Friday, October 13, 2017 at 4:12:12 AM UTC+2, Chris Laprise wrote:
> On 10/12/2017 06:42 AM, Foppe de Haan wrote:
> > On Wednesday, October 11, 2017 at 10:08:18 PM UTC+2, Chris Laprise wrote:
> >> On 10/11/2017 04:05 PM, Chris Laprise wrote:
> >>>
> >>> I can explain the steps. You may wish to backup your appVM before
> >>> continuing.
> >>>
> >>> 1. Start a dispVM (I'll call it disp1). Your appVM should not be running.
> >>>
> >>> 2. In dom0 run 'qvm-block -A /var/lib/qubes/appvms/yourappvm/private.img'
> >>> Substitute 'yourappvm' in above command with the name of your appVM.
> >> Correction: This command should be 'qvm-block -A disp1
> >> dom0:/var/lib/qubes/appvms/yourappvm/private.img'
> >>
> >>
> >> -- 
> >> PGP: BEE2 20C5 356E 764A 73EB  4AB3 1DC4 D106 F07F 1886
> > just for my information: why not just run that from dom0 directly (e.g. 
> > sudo fsck /var/lib/qubes/appvms/bla/bla.img)? is there a security risk 
> > involved with the invocation of fsck?
> >
> 
> Actually, yes there is a risk.
> 
> -- 
> 
> Chris Laprise, tas...@posteo.net
> https://twitter.com/ttaskett
> PGP: BEE2 20C5 356E 764A 73EB  4AB3 1DC4 D106 F07F 1886

btw, when I try this (qvm-block method) in R4.0-rc1, I get 'backend vm 'dom0' 
doesn't expose device '/var/lib/qubes/etc/etc.img'.

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Re: [qubes-users] Read-only file system in applVM

[Chris Laprise]

On 10/12/2017 06:42 AM, Foppe de Haan wrote:

On Wednesday, October 11, 2017 at 10:08:18 PM UTC+2, Chris Laprise wrote:

On 10/11/2017 04:05 PM, Chris Laprise wrote:


I can explain the steps. You may wish to backup your appVM before
continuing.

1. Start a dispVM (I'll call it disp1). Your appVM should not be running.

2. In dom0 run 'qvm-block -A /var/lib/qubes/appvms/yourappvm/private.img'
Substitute 'yourappvm' in above command with the name of your appVM.

Correction: This command should be 'qvm-block -A disp1
dom0:/var/lib/qubes/appvms/yourappvm/private.img'


--
PGP: BEE2 20C5 356E 764A 73EB  4AB3 1DC4 D106 F07F 1886

just for my information: why not just run that from dom0 directly (e.g. sudo 
fsck /var/lib/qubes/appvms/bla/bla.img)? is there a security risk involved with 
the invocation of fsck?



Actually, yes there is a risk.

--

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PGP: BEE2 20C5 356E 764A 73EB  4AB3 1DC4 D106 F07F 1886

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Re: [qubes-users] Read-only file system in applVM

[Foppe de Haan]

On Wednesday, October 11, 2017 at 10:08:18 PM UTC+2, Chris Laprise wrote:
> On 10/11/2017 04:05 PM, Chris Laprise wrote:
> > On 10/11/2017 11:00 AM, Franz wrote:
> >>
> >>
> >> On Tue, Oct 10, 2017 at 2:18 PM, Chris Laprise  >> > wrote:
> >>
> >>     On 10/10/2017 02:31 AM, Franz wrote:
> >>
> >>
> >>
> >>     On Mon, Oct 9, 2017 at 9:36 PM, Chris Laprise
> >>     
> >>     >> wrote:
> >>
> >>         On 10/09/2017 08:48 AM, Franz wrote:
> >>
> >>             Hello,
> >>
> >>             Trying to save a long document I got an error.
> >>
> >>             So tried to open a new document to copy there the
> >>     content of
> >>             the older. But it gives an error: read only file system.
> >>
> >>             Any idea why this applVM now decided to be a read only
> >>     file
> >>             system? and if  is there a fix other than rebooting?
> >>             Best
> >>             Fran
> >>
> >>
> >>         It probably means there is a logical inconsistency
> >>     (corruption) in
> >>         that filesystem, or it filled-up. You can avoid the 
> >> latter by
> >>         expanding the Private storage max size in the VM's settings.
> >>
> >>
> >>     It should be corruption, because there is plenty of space.
> >>
> >>     Anyway I had to reboot and after that it worked again even if
> >>     an alert of Python not working appears.
> >>
> >>     Is there some way to fix corruption cases?
> >>     Best
> >>     fran
> >>
> >>
> >>     Using 'fsck' on it might fix it. Before doing that, you may have
> >>     to re-mount the volume as read-only; or you could use qvm-block to
> >>     attach the private.img to a dispVM and then run fsck /dev/xvdi .
> >>
> >>
> >> The second seems easier, but the same I am confused. Is there a 
> >> tutorial somewhere?
> >> Best
> >> Fran
> >>
> >
> > I can explain the steps. You may wish to backup your appVM before 
> > continuing.
> >
> > 1. Start a dispVM (I'll call it disp1). Your appVM should not be running.
> >
> > 2. In dom0 run 'qvm-block -A /var/lib/qubes/appvms/yourappvm/private.img'
> > Substitute 'yourappvm' in above command with the name of your appVM.
> 
> Correction: This command should be 'qvm-block -A disp1 
> dom0:/var/lib/qubes/appvms/yourappvm/private.img'
> 
> 
> -- 
> PGP: BEE2 20C5 356E 764A 73EB  4AB3 1DC4 D106 F07F 1886

just for my information: why not just run that from dom0 directly (e.g. sudo 
fsck /var/lib/qubes/appvms/bla/bla.img)? is there a security risk involved with 
the invocation of fsck?

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Re: [qubes-users] Read-only file system in applVM

[Franz]

On Wed, Oct 11, 2017 at 5:08 PM, Chris Laprise  wrote:

> On 10/11/2017 04:05 PM, Chris Laprise wrote:
>
>> On 10/11/2017 11:00 AM, Franz wrote:
>>
>>>
>>>
>>> On Tue, Oct 10, 2017 at 2:18 PM, Chris Laprise >> > wrote:
>>>
>>> On 10/10/2017 02:31 AM, Franz wrote:
>>>
>>>
>>>
>>> On Mon, Oct 9, 2017 at 9:36 PM, Chris Laprise
>>> 
>>> >> wrote:
>>>
>>> On 10/09/2017 08:48 AM, Franz wrote:
>>>
>>> Hello,
>>>
>>> Trying to save a long document I got an error.
>>>
>>> So tried to open a new document to copy there the
>>> content of
>>> the older. But it gives an error: read only file system.
>>>
>>> Any idea why this applVM now decided to be a read only
>>> file
>>> system? and if  is there a fix other than rebooting?
>>> Best
>>> Fran
>>>
>>>
>>> It probably means there is a logical inconsistency
>>> (corruption) in
>>> that filesystem, or it filled-up. You can avoid the latter by
>>> expanding the Private storage max size in the VM's settings.
>>>
>>>
>>> It should be corruption, because there is plenty of space.
>>>
>>> Anyway I had to reboot and after that it worked again even if
>>> an alert of Python not working appears.
>>>
>>> Is there some way to fix corruption cases?
>>> Best
>>> fran
>>>
>>>
>>> Using 'fsck' on it might fix it. Before doing that, you may have
>>> to re-mount the volume as read-only; or you could use qvm-block to
>>> attach the private.img to a dispVM and then run fsck /dev/xvdi .
>>>
>>>
>>> The second seems easier, but the same I am confused. Is there a tutorial
>>> somewhere?
>>> Best
>>> Fran
>>>
>>>
>> I can explain the steps. You may wish to backup your appVM before
>> continuing.
>>
>> 1. Start a dispVM (I'll call it disp1). Your appVM should not be running.
>>
>> 2. In dom0 run 'qvm-block -A /var/lib/qubes/appvms/yourappvm/private.img'
>> Substitute 'yourappvm' in above command with the name of your appVM.
>>
>
> Correction: This command should be 'qvm-block -A disp1
> dom0:/var/lib/qubes/appvms/yourappvm/private.img'
>
>
>
Many thanks, it seems easy enough. I ordered some backup medium to backup
everything before trying.
Best
Fran

>
> --
>
> Chris Laprise, tas...@posteo.net
> https://twitter.com/ttaskett
> PGP: BEE2 20C5 356E 764A 73EB  4AB3 1DC4 D106 F07F 1886
>
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Re: [qubes-users] Read-only file system in applVM

[Chris Laprise]

On 10/11/2017 04:05 PM, Chris Laprise wrote:

On 10/11/2017 11:00 AM, Franz wrote:



On Tue, Oct 10, 2017 at 2:18 PM, Chris Laprise > wrote:


    On 10/10/2017 02:31 AM, Franz wrote:



    On Mon, Oct 9, 2017 at 9:36 PM, Chris Laprise
    
    >> wrote:

        On 10/09/2017 08:48 AM, Franz wrote:

            Hello,

            Trying to save a long document I got an error.

            So tried to open a new document to copy there the
    content of
            the older. But it gives an error: read only file system.

            Any idea why this applVM now decided to be a read only
    file
            system? and if  is there a fix other than rebooting?
            Best
            Fran


        It probably means there is a logical inconsistency
    (corruption) in
        that filesystem, or it filled-up. You can avoid the 
latter by

        expanding the Private storage max size in the VM's settings.


    It should be corruption, because there is plenty of space.

    Anyway I had to reboot and after that it worked again even if
    an alert of Python not working appears.

    Is there some way to fix corruption cases?
    Best
    fran


    Using 'fsck' on it might fix it. Before doing that, you may have
    to re-mount the volume as read-only; or you could use qvm-block to
    attach the private.img to a dispVM and then run fsck /dev/xvdi .


The second seems easier, but the same I am confused. Is there a 
tutorial somewhere?

Best
Fran



I can explain the steps. You may wish to backup your appVM before 
continuing.


1. Start a dispVM (I'll call it disp1). Your appVM should not be running.

2. In dom0 run 'qvm-block -A /var/lib/qubes/appvms/yourappvm/private.img'
Substitute 'yourappvm' in above command with the name of your appVM.


Correction: This command should be 'qvm-block -A disp1 
dom0:/var/lib/qubes/appvms/yourappvm/private.img'



--

Chris Laprise, tas...@posteo.net
https://twitter.com/ttaskett
PGP: BEE2 20C5 356E 764A 73EB  4AB3 1DC4 D106 F07F 1886

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Re: [qubes-users] Read-only file system in applVM

[Chris Laprise]

On 10/11/2017 11:00 AM, Franz wrote:



On Tue, Oct 10, 2017 at 2:18 PM, Chris Laprise > wrote:


On 10/10/2017 02:31 AM, Franz wrote:



On Mon, Oct 9, 2017 at 9:36 PM, Chris Laprise

>> wrote:

    On 10/09/2017 08:48 AM, Franz wrote:

        Hello,

        Trying to save a long document I got an error.

        So tried to open a new document to copy there the
content of
        the older. But it gives an error: read only file system.

        Any idea why this applVM now decided to be a read only
file
        system? and if  is there a fix other than rebooting?
        Best
        Fran


    It probably means there is a logical inconsistency
(corruption) in
    that filesystem, or it filled-up. You can avoid the latter by
    expanding the Private storage max size in the VM's settings.


It should be corruption, because there is plenty of space.

Anyway I had to reboot and after that it worked again even if
an alert of Python not working appears.

Is there some way to fix corruption cases?
Best
fran


Using 'fsck' on it might fix it. Before doing that, you may have
to re-mount the volume as read-only; or you could use qvm-block to
attach the private.img to a dispVM and then run fsck /dev/xvdi .


The second seems easier, but the same I am confused. Is there a 
tutorial somewhere?

Best
Fran



I can explain the steps. You may wish to backup your appVM before 
continuing.


1. Start a dispVM (I'll call it disp1). Your appVM should not be running.

2. In dom0 run 'qvm-block -A /var/lib/qubes/appvms/yourappvm/private.img'
Substitute 'yourappvm' in above command with the name of your appVM.

3. In disp1 run 'sudo fsck /dev/xvdi'

After fsck finishes you can shutdown disp1 and try to use your appVM. Or 
you can also use disp1 to explore the disk volume and copy data out of 
it (e.g. 'sudo mount /dev/xvdi /somedir; qvm-copy destvm 
/somedir/somefile').


--

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https://twitter.com/ttaskett
PGP: BEE2 20C5 356E 764A 73EB  4AB3 1DC4 D106 F07F 1886

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Re: [qubes-users] Read-only file system in applVM

[Franz]

On Tue, Oct 10, 2017 at 2:18 PM, Chris Laprise  wrote:

> On 10/10/2017 02:31 AM, Franz wrote:
>
>>
>>
>> On Mon, Oct 9, 2017 at 9:36 PM, Chris Laprise  tas...@posteo.net>> wrote:
>>
>> On 10/09/2017 08:48 AM, Franz wrote:
>>
>> Hello,
>>
>> Trying to save a long document I got an error.
>>
>> So tried to open a new document to copy there the content of
>> the older. But it gives an error: read only file system.
>>
>> Any idea why this applVM now decided to be a read only file
>> system? and if  is there a fix other than rebooting?
>> Best
>> Fran
>>
>>
>> It probably means there is a logical inconsistency (corruption) in
>> that filesystem, or it filled-up. You can avoid the latter by
>> expanding the Private storage max size in the VM's settings.
>>
>>
>> It should be corruption, because there is plenty of space.
>>
>> Anyway I had to reboot and after that it worked again even if an alert of
>> Python not working appears.
>>
>> Is there some way to fix corruption cases?
>> Best
>> fran
>>
>>
> Using 'fsck' on it might fix it. Before doing that, you may have to
> re-mount the volume as read-only; or you could use qvm-block to attach the
> private.img to a dispVM and then run fsck /dev/xvdi .


The second seems easier, but the same I am confused. Is there a tutorial
somewhere?
Best
Fran

>
>
> --
>
> Chris Laprise, tas...@posteo.net
> https://twitter.com/ttaskett
> PGP: BEE2 20C5 356E 764A 73EB  4AB3 1DC4 D106 F07F 1886
>
>

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Re: [qubes-users] Read-only file system in applVM

[Chris Laprise]

On 10/10/2017 02:31 AM, Franz wrote:



On Mon, Oct 9, 2017 at 9:36 PM, Chris Laprise > wrote:


On 10/09/2017 08:48 AM, Franz wrote:

Hello,

Trying to save a long document I got an error.

So tried to open a new document to copy there the content of
the older. But it gives an error: read only file system.

Any idea why this applVM now decided to be a read only file
system? and if  is there a fix other than rebooting?
Best
Fran


It probably means there is a logical inconsistency (corruption) in
that filesystem, or it filled-up. You can avoid the latter by
expanding the Private storage max size in the VM's settings.


It should be corruption, because there is plenty of space.

Anyway I had to reboot and after that it worked again even if an alert 
of Python not working appears.


Is there some way to fix corruption cases?
Best
fran



Using 'fsck' on it might fix it. Before doing that, you may have to 
re-mount the volume as read-only; or you could use qvm-block to attach 
the private.img to a dispVM and then run fsck /dev/xvdi .


--

Chris Laprise, tas...@posteo.net
https://twitter.com/ttaskett
PGP: BEE2 20C5 356E 764A 73EB  4AB3 1DC4 D106 F07F 1886

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Re: [qubes-users] Read-only file system in applVM

[Franz]

On Mon, Oct 9, 2017 at 9:36 PM, Chris Laprise  wrote:

> On 10/09/2017 08:48 AM, Franz wrote:
>
>> Hello,
>>
>> Trying to save a long document I got an error.
>>
>> So tried to open a new document to copy there the content of the older.
>> But it gives an error: read only file system.
>>
>> Any idea why this applVM now decided to be a read only file system? and
>> if  is there a fix other than rebooting?
>> Best
>> Fran
>>
>>
> It probably means there is a logical inconsistency (corruption) in that
> filesystem, or it filled-up. You can avoid the latter by expanding the
> Private storage max size in the VM's settings.
>
>
It should be corruption, because there is plenty of space.

Anyway I had to reboot and after that it worked again even if an alert of
Python not working appears.

Is there some way to fix corruption cases?
Best
fran

> --
>
> Chris Laprise, tas...@posteo.net
> https://twitter.com/ttaskett
> PGP: BEE2 20C5 356E 764A 73EB  4AB3 1DC4 D106 F07F 1886
>
>

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Re: [qubes-users] Read-only file system in applVM

[Chris Laprise]

On 10/09/2017 08:48 AM, Franz wrote:

Hello,

Trying to save a long document I got an error.

So tried to open a new document to copy there the content of the 
older. But it gives an error: read only file system.


Any idea why this applVM now decided to be a read only file system? 
and if  is there a fix other than rebooting?

Best
Fran



It probably means there is a logical inconsistency (corruption) in that 
filesystem, or it filled-up. You can avoid the latter by expanding the 
Private storage max size in the VM's settings.


--

Chris Laprise, tas...@posteo.net
https://twitter.com/ttaskett
PGP: BEE2 20C5 356E 764A 73EB  4AB3 1DC4 D106 F07F 1886

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