[opensuse] Low-level symlinks are possible in Linux ? (needed for file system virtualization)
Hi All ! I'm practicing black magic... oops... file system virtualization I meant :) What I'm trying to do - is to find something in between the softlink (which is in userspace) and hardlink (filesystem/kernelspace level). I want my softlinks to be accessible from non-standard mount points and from virtual machines. Links this /mnt/mydisk1/symlink1 -> (softlink to) /mnt/mydisk2/file1 Now, If I mount only harddisk 1, then then all programs running on mydisk1 will be unable to access to symlink1, because it point at userspace level to something that not exists. Things can become more complex if I use container-based virtualization (OpenVZ). Hardlinks can solve this issue, because they work at kernel level, but they have lots of limitations: no directories, files must be on same partition, ... Question: Is there a way to make symlink at kernel level, so it will behave correctly under non-standard circumstances ? -- -Alexey Eromenko "Technologov" -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 The Monday 2008-08-04 at 07:24 -0000, Alexey Eremenko wrote:
Hi All !
I'm practicing black magic... oops... file system virtualization I meant :)
What I'm trying to do - is to find something in between the softlink (which is in userspace) and hardlink (filesystem/kernelspace level).
I want my softlinks to be accessible from non-standard mount points and from virtual machines.
Links this /mnt/mydisk1/symlink1 -> (softlink to) /mnt/mydisk2/file1
Now, If I mount only harddisk 1, then then all programs running on mydisk1 will be unable to access to symlink1, because it point at userspace level to something that not exists. Things can become more complex if I use container-based virtualization (OpenVZ).
Softlinks are not userspace. AFAIK, they are filesystem space, ie, kernel space, exactly the same as hard links. And no, no matter what you do they will not trigger mounting another partition. That's a decision that is up to the administrator to mount or not mount, not the whim of somebody trying to access a file. Maybe if you request that feature of filesystem developers they may devise some method. - -- Cheers, Carlos E. R. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4-svn0 (GNU/Linux) iD8DBQFIlwgqtTMYHG2NR9URAiyJAJ41DbNKS80e5OnD9FwleFiWJGW9BgCfatE1 Thh0bAiuC9pZJLeo330Mtp0= =0Y6Q -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
participants (2)
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Alexey Eremenko -
Carlos E. R.