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 Forum index » Advanced Topics » Puppy Projects » Next Puppy Development
Multiple SFS support in initrd
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Karl Godt


Joined: 20 Jun 2010
Posts: 2689
Location: Kiel,Germany
PostPosted: Tue 12 Mar 2013, 00:23    Post subject:  
That is not your Windows files. It is an OS's files licensed to you. Very Happy Rolling Eyes Laughing Razz Question
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mavrothal


Joined: 24 Aug 2009
Posts: 1058
PostPosted: Tue 12 Mar 2013, 00:48    Post subject:  
greengeek wrote:
Now that we have adrv, ddrv and zdrv, could you also add c:drv please (to contain all my Windows files). I noticed ever since I first tried puppy that the c:drv has been missing...

Cool


Regarding c:drv, let me recycle another post Cool
Quote:
It can run from NTFS partitions.
Actually I find this a flaw! (also for puppy)
NTFS. So primarily you are a windows user, used to be asked 5 times if you "really, truly, positively want to open this application".
And now you are granted root access in a system that you do not know very well and you are one typo/click away from messing your Windows partition (and then spend a day try to recover your "graduation pictures" ).
Besides NTFS already implies that it is a hobby/test OS and is not really used


Razz
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R-S-H

Joined: 18 Feb 2013
Posts: 287
PostPosted: Tue 12 Mar 2013, 03:30    Post subject:  
Hi mavrothal.

filemnt message is: could not find free loop device.

Do I have to increase them as well in initrd.gz or how could this be done?

My initrd.gz has loop0 to loop10. The sfs_load creates automatically new ones if more sfs files are loaded.

So, let's say sfs_load has created new loops up to 16 then the iso could not be mounted if all loops are used. Unloading an sfs and mounting a iso works.
After unmounting the iso and loading new sfs mounting a iso fails again and son on. --> sometimes sfs_load stops to create new loop device after mounting an iso has failed several times.

That's really weird for a beginner like me... Laughing

To set option -x (set -x) in filemnt would have which effect?

Thanks

RSH
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mavrothal


Joined: 24 Aug 2009
Posts: 1058
PostPosted: Tue 12 Mar 2013, 05:41    Post subject:  
R-S-H wrote:

To set option -x (set -x) in filemnt would have which effect?

Not that I know off. But is the filemnt behavior changes in you setting depending on "set -x"?

If you have problem with number or the generation of loop devices in /dev you may just want to make them manually once and have them there
Just type "mknod -m664 /dev/loop<number> b 7 <number>", where number is 11, 12,... etc (you can do it with a script too).

This will not address the root of the problem but it may cover it (up to the number of loop devices you will make).

The problem with this kind of "debugging" is that you have introduce several changes in your code-base so is hard for anybody else to reproduce or even see what is going on.
If you are going to keep developing/changing things you may want to seriously consider a versioning system (git, svn, hg etc). If it is pubic is even better Wink
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R-S-H

Joined: 18 Feb 2013
Posts: 287
PostPosted: Tue 12 Mar 2013, 14:28    Post subject:  
Thanks for your long support here, mavrothal.

I have used a script to create the loop devices:
Code:
#!/bin/bash -a
#------------------------------------------------------------------------------
# Make loop devices for LazY Puppy
#------------------------------------------------------------------------------

for i in 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64;
do
   mknod -m664 /dev/loop$i b 7 $i
done

exit 0

#------------------------------------------------------------------------------
# End
#------------------------------------------------------------------------------

All loop devices are successfully created. But I'm not sure how to do this or better saying when/where.

Should I create the loop devices from within the init scipt (at boot up) or editing the initr.gz to create the loop devices. Path then would be:
Code:
mknod -m664 /root/init_rd_temp/dev/loop$i b 7 $i

I assume different path makes no difference?

Thanks

RSH

P.S. Tests to create the loop devices has been made using a LazY Puppy version with no adrv options added (currently running it) - so, I couldn't test anything else yet.
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mavrothal


Joined: 24 Aug 2009
Posts: 1058
PostPosted: Tue 12 Mar 2013, 14:42    Post subject:  
R-S-H wrote:

I assume different path makes no difference?

I do not know.
I have not seen devices outside /dev but this may just be a convention.

But I think we are getting waaaaay off topic here.
You may want to open a specific thread for these issues like "LazY puppy next" or something.
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R-S-H

Joined: 18 Feb 2013
Posts: 287
PostPosted: Tue 12 Mar 2013, 15:41    Post subject:  
Quote:
I do not know.
I have not seen devices outside /dev but this may just be a convention.

No, the devices are not outside /dev. What I meant is, if I'm extracting the initrd.gz to edit the files those files will be extracted to /root/init_rd_temp. Therefor the path for the mknod command script would be /root/init_rd_temp/dev. Sorry for confusing you.

However: currently running LazY Puppy 3.0.0 with adrv option added. Executing the script to create loop devices up to 64. Loading sfs files up to pup_ro35 and mounting an iso still works - even after unloading sfs files and loading new ones. Everything seems to be fine. Very Happy

Thank you very much for your long support here, mavrothal. I will notice it in LazY Puppy 3 - when published! Cool

BTW:

I think my issues on this here are not LazY Puppy specific - they might surely hurt any lupu user who wants to add such a nice feature! Idea

Thanks again

RSH
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Karl Godt


Joined: 20 Jun 2010
Posts: 2689
Location: Kiel,Germany
PostPosted: Tue 12 Mar 2013, 16:18    Post subject:  
RSH : If the initrd.gz initscript should mount these dozen .sfs to merge them into the layered aufs/unionfs filesystem, then it must be altered. This sfs_load by shinobar is a nice and apparently good working script to mount and merge .sfs by /etc/rc.d/rc.sysinit or rc.local or /root/Startup/my_sfs_load_script.sh .

Happy crashes while experimenting with /init !
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R-S-H

Joined: 18 Feb 2013
Posts: 287
PostPosted: Tue 12 Mar 2013, 16:23    Post subject:  
Hi Karl Godt.

Quote:
RSH : If the initrd.gz initscript should mount these dozen .sfs to merge them into the layered aufs/unionfs filesystem, then it must be altered. This sfs_load by shinobar is a nice and apparently good working script to mount and merge .sfs by /etc/rc.d/rc.sysinit or rc.local or /root/Startup/my_sfs_load_script.sh .

As usual useful information! Cool

Quote:
Happy crashes while experimenting with /init !

Thanks, but so far: nothing crashed! Very Happy
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