Am Sonntag, 17. September 2006 11:30 schrieb Jan Engelhardt:
> Hello list, I am back on track :)
>
>
> I dug the archives but [1] does not really seem to be a solution
> since / is not the nfs and I most likely also get Invalid Arugment on
> doing that pivot_root.
>
> [1]
> http://www.fsl.cs.sunysb.edu/pipermail/unionfs/2005-June/002830.html
>
>
> So here is the setup:
>
> # uname -a
> 2.6.17.8-jen32-default
> (with unionfs 1.3)
>
> # cat /proc/mounts
> rootfs / rootfs rw 0 0 (initramfs)
> udev /dev tmpfs rw 0 0
> proc /proc proc rw 0 0
> sysfs /sys sysfs rw 0 0
> 192.168.222.1:/tftpboot/terran /.STATIC nfs
> rw,vers=3,rsize=8192,wsize=8192,hard,intr,proto=tcp,timeo=600,retrans
>=3,addr=192.168.222.1 0 0 /dev/disk/by-label/tmp /.DYNAMIC xfs rw 0 0
> none /root unionfs
> rw,dirs=/.DYNAMIC=rw:/.STATIC=nfsro,debug=4294967295,delete=whiteout
> 0 0
>
> Then I move the two to be inside the union,
>
> # mount -n --move /.STATIC /root/.STATIC
> # mount -n --move /.DYNAMIC /root/.DYNAMIC
>
> The run_init program will pivot_root to /root, and do the Usual Duty.
> After run_init is done, /proc/mounts contains
>
> # mount /proc; cat /proc/mounts
> rootfs / rootfs rw 0 0
> udev /dev tmpfs rw 0 0
> proc /proc proc rw 0 0
> sysfs /sys sysfs rw 0 0
> 192.168.222.1:/tftpboot/terran /.STATIC nfs
> rw,vers=3,rsize=8192,wsize=8192,hard,intr,proto=tcp,timeo=600,retrans
>=3,addr=192.168.222.1 0 0 /dev/disk/by-label/tmp /.DYNAMIC xfs rw 0 0
> none / unionfs
> rw,dirs=/.DYNAMIC=rw:/.STATIC=nfsro,debug=4294967295,delete=whiteout
> 0 0
>
>
> Problem remains, programs will have /.STATIC in their /proc/$$/exe
> link. Some people here seem to have workarounds that involve only
> binding and mounting. What are the possibilities?
Jan, sorry for the late answer, I'm pretty busy with awful lot of
different things..
What about dirty fixing it with a symlink, e.g.:
ln -s . .STATIC
Cheers,
Pete
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