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[LV-kern-commit] CVS: kernel-2.4/Documentation/filesystems/devfs ChangeLog,1.3,1.4 README,1.3,1.4
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From: Dave A. <ai...@us...> - 2003-06-10 01:48:29
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Update of /cvsroot/linux-vax/kernel-2.4/Documentation/filesystems/devfs In directory sc8-pr-cvs1:/tmp/cvs-serv23180/Documentation/filesystems/devfs Modified Files: ChangeLog README Log Message: DA: sync to Marcelo 2.4.18 + remove init_mmap (no longer needed) Index: ChangeLog =================================================================== RCS file: /cvsroot/linux-vax/kernel-2.4/Documentation/filesystems/devfs/ChangeLog,v retrieving revision 1.3 retrieving revision 1.4 diff -u -r1.3 -r1.4 --- ChangeLog 10 Jun 2003 01:13:12 -0000 1.3 +++ ChangeLog 10 Jun 2003 01:45:45 -0000 1.4 @@ -1845,3 +1845,38 @@ - Improved debugging messages - Fixed unregister bugs in drivers/md/lvm-fs.c +=============================================================================== +Changes for patch v199.6 + +- Corrected (made useful) debugging message in <unregister> + +- Moved <kmem_cache_create> in <mount_devfs_fs> to <init_devfs_fs> + +- Fixed drivers/md/lvm-fs.c to create "lvm" entry + +- Added magic number to guard against scribbling drivers + +- Only return old entry in <devfs_mk_dir> if a directory + +- Defined macros for error and debug messages + +- Updated README from master HTML file +=============================================================================== +Changes for patch v199.7 + +- Unregister /dev/root symlink prior to creating second one (for + initrd) + +- Added support for multiple Compaq cpqarray controllers + +- Fixed (rare, old) race in <devfs_lookup> +=============================================================================== +Changes for patch v199.8 + +- Fixed deadlock bug in <devfs_d_revalidate_wait> + +- Tag VFS deletable in <devfs_mk_symlink> if handle ignored + +- Updated README from master HTML file + +- Fixed kdev_none macro in include/linux/kdev_t.h Index: README =================================================================== RCS file: /cvsroot/linux-vax/kernel-2.4/Documentation/filesystems/devfs/README,v retrieving revision 1.3 retrieving revision 1.4 diff -u -r1.3 -r1.4 --- README 10 Jun 2003 01:13:12 -0000 1.3 +++ README 10 Jun 2003 01:45:45 -0000 1.4 @@ -3,7 +3,16 @@ Linux Devfs (Device File System) FAQ Richard Gooch -13-DEC-2001 +20-JAN-2002 + + +Document languages: + + + + + + ----------------------------------------------------------------------------- @@ -68,6 +77,8 @@ Alternatives to devfs What I don't like about devfs How to report bugs +Strange kernel messages +Compilation problems with devfsd Other resources @@ -836,8 +847,8 @@ will now work as before. Hopefully for most people devfs will have enough support so that they -can mount devfs directly over /dev without loosing most functionality -(i.e. loosing access to various devices). As of 22-JAN-1998 (devfs +can mount devfs directly over /dev without losing most functionality +(i.e. losing access to various devices). As of 22-JAN-1998 (devfs patch version 10) I am now running this way. All the devices I have are available in devfs, so I don't lose anything. @@ -1475,6 +1486,8 @@ Alternatives to devfs What I don't like about devfs How to report bugs +Strange kernel messages +Compilation problems with devfsd @@ -1675,7 +1688,7 @@ minor limitation -simplying increasing the device number size is insufficient. Apart +simply increasing the device number size is insufficient. Apart from causing a lot of pain, it doesn't solve the management issues of a /dev with thousands or more device nodes @@ -1790,6 +1803,65 @@ http://www.chiark.greenend.org.uk/~sgtatham/bugs.html. + +Strange kernel messages + +You may see devfs-related messages in your kernel logs. Below are some +messages and what they mean (and what you should do about them, if +anything). + + + +devfs_register(fred): could not append to parent, err: -17 + +You need to check what the error code means, but usually 17 means +EEXIST. This means that a driver attempted to create an entry +fred in a directory, but there already was an entry with that +name. This is often caused by flawed boot scripts which untar a bunch +of inodes into /dev, as a way to restore permissions. This +message is harmless, as the device nodes will still +provide access to the driver (unless you use the devfs=only +boot option, which is only for dedicated souls:-). If you want to get +rid of these annoying messages, upgrade to devfsd-v1.3.20 and use the +recommended RESTORE directive to restore permissions. + + +devfs_mk_dir(bill): using old entry in dir: c1808724 "" + +This is similar to the message above, except that a driver attempted +to create a directory named bill, and the parent directory +has an entry with the same name. In this case, to ensure that drivers +continue to work properly, the old entry is re-used and given to the +driver. In 2.5 kernels, the driver is given a NULL entry, and thus, +under rare circumstances, may not create the require device nodes. +The solution is the same as above. + + + + + +Compilation problems with devfsd + +Usually, you can compile devfsd just by typing in +make in the source directory, followed by a make +install (as root). Sometimes, you may have problems, particularly +on broken configurations. + + + +error messages relating to DEVFSD_NOTIFY_DELETE + +This happened because you have an ancient set of kernel headers +installed in /usr/include/linux or /usr/src/linux. +Install kernel 2.4.10 or later. You may need to pass the +KERNEL_DIR variable to make (if you did not install +the new kernel sources as /usr/src/linux), or you may copy +the devfs_fs.h file in the kernel source tree into +/usr/include/linux. + + + + ----------------------------------------------------------------------------- @@ -1844,9 +1916,25 @@ +The document master (in English) by rg...@at... is +available at + +http://www.atnf.csiro.au/~rgooch/linux/docs/devfs.html + + + A Korean translation by via...@no... is available at -http://home.nownuri.net/~viatoris/devfs/devfs.html +http://home.nownuri.net/~viatoris/devfs/devfs.html + +A newer version is under construcation at + +http://viatoris.new21.org/devfs/devfs.html + +----------------------------------------------------------------------------- +Most flags courtesy of ITA's +Flags of All Countries +used with permission. |
