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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 HPUX
clri_hfs
clri(1M) clri(1M) NAME
clri - clear inode SYNOPSIS
special i-number ... DESCRIPTION
The command clears the inode i-number by filling it with zeros. special must be a special file name referring to a device containing a file system. For proper results, special should not be mounted (see WARNINGS below). After is executed, all blocks in the affected file show up as "missing" in an of special (see fsck(1M)). This command should only be used in emergencies. Read and write permission is required on the specified special device. The inode becomes allocatable. WARNINGS
The primary purpose of this command is to remove a file that for some reason does not appear in any directory. If it is used to clear an inode that does appear in a directory, care should be taken to locate the entry and remove it. Otherwise, when the inode is reallocated to some new file, the old entry in the directory will still point to that file. At that point, removing the old entry destroys the new file, causing the new entry to point to an unallocated inode, so the whole cycle is likely to be repeated again. If the file system is mounted, is likely to be ineffective. DEPENDENCIES
operates only on file systems of type SEE ALSO
fsck(1M), fsdb(1M), ncheck(1M). STANDARDS CONFORMANCE
clri: SVID2, SVID3 clri(1M)