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UnionFS and OpenVZ [message #644]

Tue, 03 January 2006 21:15

wimalopaan
Messages: 15
Registered: January 2006

Junior Member

Hi,

I'm using UnionFS together with VServer for some time, and I want to use UnionFS also with OpenVZ. But, sadly, UnionFS supports only kernels >= 2.6.9.

Are there OpenVZ-Versions >= 2.6.9 to experiment with?

--
Wilhelm

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Re: UnionFS and OpenVZ [message #714 is a reply to message #644]

Sat, 07 January 2006 12:23

kir
Messages: 1645
Registered: August 2005
Location: Moscow, Russia

Senior Member

It is not currently available, but in some time there will be OpenVZ based on more recent kernel (like, say, 2.6.14). I can not give you any estimations yet, it may be a month or a few months.

Kir Kolyshkin

http://static.openvz.org/userbars/openvz-developer.png

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Re: UnionFS and OpenVZ [message #754 is a reply to message #644]

Mon, 09 January 2006 08:37

dev
Messages: 1693
Registered: September 2005
Location: Moscow

Senior Member

to tell the truth, 2.6.9 and 2.6.8 are too much the same in VFS area, so I don't forsee any problems here. Try to compile unionfs.

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Re: UnionFS and OpenVZ [message #755 is a reply to message #714]

Mon, 09 January 2006 10:05

Valmont
Messages: 225
Registered: September 2005

Senior Member

Hi!

Can you, please, describe future politic of new release openvz kernel?

Will you continue to update current 2.6.8 kernel, like you do it now?

I meen what about stability...

Thank you.

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Re: UnionFS and OpenVZ [message #756 is a reply to message #755]

Mon, 09 January 2006 10:08

dev
Messages: 1693
Registered: September 2005
Location: Moscow

Senior Member

sure, 2.6.8 kernel will be supported for at least 1-2 years.
at the same time more recent kernel will probably appear soon, but I would recommend to stick with 2.6.8 in production until we announce another stable kernel.

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Re: UnionFS and OpenVZ [message #757 is a reply to message #754]

Mon, 09 January 2006 10:16

wimalopaan
Messages: 15
Registered: January 2006

Junior Member

seems not to be that simple:

gs unionfs-20060108-0200 # make
************************************************************ ******************
If you have questions about or problems building Unionfs, please read INSTALL.
************************************************************ ******************

make -C /lib/modules/2.6.8-022stab050-smp/build SUBDIRS=/root/lmeier/Software/UnionFS/unionfs-20060108-0200 FISTDEVMK=/root/lmeier/Software/UnionFS/unionfs-20060108-020 0/fistdev.mk modules
make[1]: Entering directory `/usr/src/linux-2.6.8-openvz-022.050'
CC [M] /root/lmeier/Software/UnionFS/unionfs-20060108-0200/subr.o
CC [M] /root/lmeier/Software/UnionFS/unionfs-20060108-0200/dentry.o
CC [M] /root/lmeier/Software/UnionFS/unionfs-20060108-0200/file.o
CC [M] /root/lmeier/Software/UnionFS/unionfs-20060108-0200/inode.o
/root/lmeier/Software/UnionFS/unionfs-20060108-0200/inode.c: In function `inode_permission':
/root/lmeier/Software/UnionFS/unionfs-20060108-0200/inode.c: 838: error: too few arguments to function
/root/lmeier/Software/UnionFS/unionfs-20060108-0200/inode.c: 852: error: too few arguments to function `vfs_permission'
/root/lmeier/Software/UnionFS/unionfs-20060108-0200/inode.c: At top level:
/root/lmeier/Software/UnionFS/unionfs-20060108-0200/inode.c: 984: warning: initialization from incompatible pointer type
/root/lmeier/Software/UnionFS/unionfs-20060108-0200/inode.c: 1000: warning: initialization from incompatible pointer type
/root/lmeier/Software/UnionFS/unionfs-20060108-0200/inode.c: 1009: warning: initialization from incompatible pointer type
make[2]: *** [/root/lmeier/Software/UnionFS/unionfs-20060108-0200/inode.o ] Error 1
make[1]: *** [_module_/root/lmeier/Software/UnionFS/unionfs-20060108-0200 ] Error 2
make[1]: Leaving directory `/usr/src/linux-2.6.8-openvz-022.050'
make: *** [unionfs.ko] Error 2
gs unionfs-20060108-0200 #

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Re: UnionFS and OpenVZ [message #758 is a reply to message #757]

Mon, 09 January 2006 10:24

dev
Messages: 1693
Registered: September 2005
Location: Moscow

Senior Member

it's easy. in OpenVZ kernel we added one more argument to vfs_permission(), but since no UnionFS were there it was not patched by us.
Just add one more argument to vfs_permission(... , NULL)

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Re: UnionFS and OpenVZ [message #759 is a reply to message #758]

Mon, 09 January 2006 13:47

wimalopaan
Messages: 15
Registered: January 2006

Junior Member

I made some modifications to unionfs to be compatible to kernel-2.6.8. First tests showed, that it is possible to use unionfs for unification of openvz-vps's now. I will do some more tests and then publish also the patches.

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Re: UnionFS and OpenVZ [message #761 is a reply to message #759]

Mon, 09 January 2006 14:16

dev
Messages: 1693
Registered: September 2005
Location: Moscow

Senior Member

thanks a lot!
feel free to ask any questions/help!

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Re: UnionFS and OpenVZ [message #2914 is a reply to message #644]

Wed, 26 April 2006 20:34

Griffon26
Messages: 4
Registered: April 2006
Location: Eindhoven, The Netherland...

Junior Member

Just in case anyone is still looking for a solution, I have attached
a patch for unionfs snapshot 20060423-1600 and openvz 026.007.

I've not tested it yet, it just gets unionfs to compile.