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UNIX for Dummies Questions & Answers
How do you delete files that are seemingly missing inodes?
Post 302283190 by Perderabo on Monday 2nd of February 2009 08:42:10 PM
02-02-2009
I hope you have a backup of that disk.
If your fsck is accepting directory entries like that, I must suspect a bug. So my first approach would be find a better version of fsck. Are your patches up to date? If you can find a patched version of fsck, try that.
The safest way out is a fair amount of work... Do a mkfs and reload all of the files.
There is, perhaps, a way to do what you want. I have never done it on Linux, but I have done it on HP-UX. So I am locating the similiar linux commands and guessing that they might work. Caution, I have never tried anything like this in linux.
You need to destroy that directory. A directory is actually a file and it has datablocks allocated to it. Each directory entry is a pair of items: a name and an inode number. Your directory has entries pointing to invalid inode numbers. To destroy that directory, use "ls -id /path/to/directory" to get the inode of that directory. Then destroy that inode and rerun fsck. The clri command is what I used on HP-UX and on linux, it is not a separate command, it is part of debugfs. So it goes something like:
1 find inode number of directory
2 umount /dev/sdb2
3 debugfs -w /dev/sdb2
4 at the debug prompt, clri 1234
5 at the debugfs prompt, quit
6 fsck -f /dev/sdb2
But I'm not gonna try that on my system... you first...
If your fsck is accepting directory entries like that, I must suspect a bug. So my first approach would be find a better version of fsck. Are your patches up to date? If you can find a patched version of fsck, try that.
The safest way out is a fair amount of work... Do a mkfs and reload all of the files.
There is, perhaps, a way to do what you want. I have never done it on Linux, but I have done it on HP-UX. So I am locating the similiar linux commands and guessing that they might work. Caution, I have never tried anything like this in linux.
You need to destroy that directory. A directory is actually a file and it has datablocks allocated to it. Each directory entry is a pair of items: a name and an inode number. Your directory has entries pointing to invalid inode numbers. To destroy that directory, use "ls -id /path/to/directory" to get the inode of that directory. Then destroy that inode and rerun fsck. The clri command is what I used on HP-UX and on linux, it is not a separate command, it is part of debugfs. So it goes something like:
1 find inode number of directory
2 umount /dev/sdb2
3 debugfs -w /dev/sdb2
4 at the debug prompt, clri 1234
5 at the debugfs prompt, quit
6 fsck -f /dev/sdb2
But I'm not gonna try that on my system... you first...
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LEARN ABOUT LINUX
clri
clri(1M) System Administration Commands clri(1M) NAME
clri, dcopy - clear inode SYNOPSIS
clri [-F FSType] [-V] special i-number dcopy [-F FSType] [-V] special i-number DESCRIPTION
clri writes zeros on the inodes with the decimal i-number on the file system stored on special. After clri, any blocks in the affected file show up as missing in an fsck(1M) of special. Read and write permission is required on the specified file system device. The inode becomes allocatable. The primary purpose of this routine is to remove a file that for some reason appears in no directory. If it is used to zap an inode that does appear in a directory, care should be taken to track down the entry and remove it. Otherwise, when the inode is reallocated to some new file, the old entry will still point to that file. At that point, removing the old entry will destroy the new file. The new entry will again point to an unallocated inode, so the whole cycle is likely to be repeated again and again. dcopy is a symbolic link to clri. OPTIONS
-F FSType Specify the FSType on which to operate. The FSType should either be specified here or be determinable from /etc/vfstab by matching special with an entry in the table, or by consulting /etc/default/fs. -V Echo the complete command line, but do not execute the command. The command line is generated by using the options and arguments provided by the user and adding to them information derived from /etc/vfstab. This option should be used to ver- ify and validate the command line. USAGE
See largefile(5) for the description of the behavior of clri and dcopy when encountering files greater than or equal to 2 Gbyte ( 2 **31 bytes). FILES
/etc/default/fs Default local file system type /etc/vfstab List of default parameters for each file system ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
fsck(1M), vfstab(4), attributes(5), largefile(5) NOTES
This command might not be supported for all FSTypes. SunOS 5.10 16 Sep 1996 clri(1M)