7 More Discussions You Might Find Interesting
1. Gentoo
In a case of root=/dev/ram0 real_root=/dev/sda2
No filesystem could mount root, tried: ext3 ext2...
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)
http://imageplay.net/img/tya22288136/IMG0204A.jpg (real_root - real panic)
The case of omitting real_root and... (1 Reply)
Discussion started by: Xcislav
1 Replies
2. Red Hat
hlow all,
i want to know how we do insert big file in VFS and how we do to call that file again
can anyone explain about that
thx before (0 Replies)
Discussion started by: zvtral
0 Replies
3. Programming
Hi to all,
i am trying to make a kernel call that will display the number of times each kernel call was called. Any idea where to look? I can't find the right files and also how to get all those values. Already made a kernel call that displays how many kernel calls are in the system. I am using... (6 Replies)
Discussion started by: hariscy
6 Replies
4. Solaris
hey guys
i hope there is someone familiar with minix that can help me. Well, the problem i am sitting with is that a ran a program with an infinite loop in it, now i think i ran out of memory in the root because a keep on getting the message " no space on the root device 3/128 ", whenever i try... (3 Replies)
Discussion started by: surubi_abada
3 Replies
5. Red Hat
I can install RedHat ASE3 on a virtual machine (Ram set to 600Mb) without any problems. However if I start a Virtual machine with greater than 600Mb then either try and boot an existing image or install a new one it will stop at the line:
VFS: Mounter Root (ext2 fielsystem)
Ocastionally I... (1 Reply)
Discussion started by: Ralf
1 Replies
6. UNIX for Dummies Questions & Answers
hi, I'm trying to install Minix 2.0.3 on an old gateway2000 4dz2-66 manufactured back in 1995. After I ran 'part' in setup, It make the root/swap/usr subpartitions and then I get this message:
installboot: No such File or Directory
This was when i had my /usr disk in,here is teh output i... (2 Replies)
Discussion started by: deadrobot
2 Replies
7. UNIX for Advanced & Expert Users
Does anyone know a way to mount new directories into the VFS table without having to type them in?
Thanks in advance!
- BC (1 Reply)
Discussion started by: wcostigan
1 Replies
LEARN ABOUT NETBSD
vfs_hooks
VFS_HOOKS(9) BSD Kernel Developer's Manual VFS_HOOKS(9)
NAME
vfs_hooks, vfs_hooks_unmount -- VFS hooks interface
SYNOPSIS
#include <sys/param.h>
#include <sys/mount.h>
void
vfs_hooks_unmount(struct mount *mp);
DESCRIPTION
The VFS hooks interface provides a way for different kernel subsystems to attach custom functions to specific VFS operations. This enforces
code separation by keeping the VFS's core sources uncluttered and makes all subsystem functionality reside in a single place. As an example,
this interface is used by the NFS server code to automatically handle the exports list for each mount point.
Hooks are described by a struct vfs_hooks object, as seen below:
struct vfs_hooks {
int (*vh_unmount)(struct mount *);
};
For simplicity, each field is named after the VFS operation it refers to. The purpose of each member function, alongside some important
notes, is shown below:
vh_unmount(mp)
This hook is executed during the unmount process of a file system.
For more information about the purpose of each operation, see vfsops(9). Note that any of these fields may be a null pointer.
After the definition of a struct vfs_hooks object, the kernel has to add it to the vfs_hooks link set using the VFS_HOOKS_ATTACH(struct
vfs_hooks *) macro.
Please note that this interface is incomplete on purpose to keep it in its smallest possible size (i.e., do not provide a hook that is not
used). If you feel the need to hook a routine to a VFS operation that is not yet supported by this interface, just add it to the files
described in CODE REFERENCES.
FUNCTIONS
The following functions are provided to the VFS code to run the hooked functions:
vfs_hooks_unmount(mp)
Runs all hooks for the VFS unmount operation. Given that these operations shall not fail, it returns void.
CODE REFERENCES
The VFS hooks interface is implemented within the files sys/kern/vfs_hooks.c and sys/sys/mount.h.
SEE ALSO
intro(9), vfs(9), vfsops(9)
HISTORY
The VFS hooks interface appeared in NetBSD 4.0.
BSD
September 23, 2005 BSD