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7
votes
2answers
145 views

what does a “deleted file” entry look like in the journal

I hope I've got this right: A file's inode contains data such as inode number, time of last modification, ownership etc. – and also the entry: »deletion time«. Which made me curious: ...
8
votes
4answers
283 views

Find where inodes are being used

So I received a warning from our monitoring system on one of our boxes that the number of free inodes on a filesystem was getting low. df -i output shows this: Filesystem Inodes IUsed ...
5
votes
2answers
215 views

How do I find the inode of any directory?

There is literally nothing on google that I can find that will help me answer this question. I presume it is passing some other parameter to ls -i?
1
vote
1answer
44 views

Why is it impossible to change the inode count of an ext filesystem?

I know that it isn't possible to change the inode count of an ext filesystem after its creation, but I haven't been able to find any explanation on why it isn't. Can anyone enlighten me?
1
vote
1answer
46 views

Where have all my inodes gone?

Today, I ran out of inodes on one of my VPSs. I deleted a bunch of superfluous small files, freeing enough inodes to make the system operational again: Filesystem Inodes IUsed IFree IUse% Mounted ...
2
votes
1answer
28 views

link count of deleted files

I am reading in man lsof that +L enables the listing of file link counts. A specification of the form "+L1" will select open files that have been unlinked. I don't understand why deleted files ...
3
votes
4answers
125 views

Work out the link count of inode number?

How can I work out the link count of an inode number? If I know the inode number is, say, 592255 - what workings out can I do to find out the link count? I know directories have a link count of at ...
5
votes
2answers
112 views

Difference between xattr and chattr

What is the relation and the difference between xattr and chattr? I want to know when I set a chattr attribute in Linux what is happening inside the Linux kernel and inode metadata.
3
votes
1answer
1k views

inode limitation on a 500GB hard disk? Can you explain please?

I am launching a social networking website on LAMP Stack on Linux Ubuntu, I know that people are going to upload lots of pictures. Let's say I have 5000 users and each user upload a minimum of 100 ...
1
vote
2answers
71 views

When do inode modification times change? [closed]

I am currently reading UNIX by Bach. I encountered a problem while reading the section on inodes in the 4th chapter. A file modified time is shown as 1:45pm but the inode modified time is shown as ...
2
votes
2answers
134 views

Can you restrict the number of inodes a user can access?

It appears that it is possible on a network mount to set a quota on how much space a user can consume. # edquota ramesh Disk quotas for user ramesh (uid 500): Filesystem blocks ...
3
votes
1answer
42 views

Where are information stored information about hard/soft links

Where does the *nix system store information about number of hard links to a specific inode? I can't find any information about that. Everywhere what a hard link is but rarely a bit more advanced ...
0
votes
0answers
54 views

Mail queue keep growing

My server keeps running short on inodes due the mail queue getting crazy. First, I assumed I had postfix not configured properly, so I switched it off. But, it happened again, last time I did it I had ...
8
votes
2answers
256 views

Why does the Linux kernel report “out of disk space” when in reality it is out of i-nodes

A friend of mine who likes programming in the Linux environment, but doesn't know much about the administration of Linux recently ran into a problem where his OS (Ubuntu) was reporting "out of disk ...
15
votes
2answers
3k views

How can I find the number of files on a filesystem?

I want to know how many files I have on my filesystem. I know I can do something like this: find / -type f | wc -l This seems highly inefficient. What I'd really like is to do is find the total ...
4
votes
2answers
108 views

Linux: How does hard-linking to a directory work?

I'm aware that Linux does not allow hard-linking to a directory. I read somewhere, that this is to prevent unintentional loops (or graphs, instead of the more desirable tree structure) in the ...
2
votes
2answers
199 views

Is a -rw-rw-rw- file really inaccessible inside a drwxrwx— directory?

Say I have a directory with these permissions: drwxrwx--- Inside this directory, a file with these permissions: -rw-rw-rw- Is the file readable/writable by everyone or not ? If not, how secure ...
1
vote
2answers
896 views

No space left on device / No Inodes free OR used / Double mounting

For about a day now I can only create/cp/mv (through terminal or various GUI programs) files on my FAT16 formatted USB stick, of about a few bytes. Doing so with larger files reports cannot create ...
5
votes
2answers
199 views

Can a file be retrieved by its inode?

Run command like the following: $ln a b $ls -i a b 523669 a 523669 b $rm -f a $ls -i b 523669 b I concluded from this test that command rm actually removes the filename (a in this test) only ...
7
votes
6answers
20k views

How do I count all the files recursively through directories

I want to see how many files are in subdirectories in there subdirectories to find out where all the inode usage is on the system. Kind of like I would do this for space usage du -sh /* which will ...
3
votes
3answers
2k views

Quickly find which file(s) belongs to a specific inode number

I know of this command: find /path/to/mountpoint -inum <inode number> but it is a very slow search, I feel like there has to be a faster way to do this. Does anybody know a faster method?
2
votes
0answers
583 views

Recovering files using extundelete

I've accidentally deleted some files in my package managers's cache after an update (so I've deleted all packages that were downloade and unforunately they weren't even installed). Here's what I've ...
0
votes
0answers
47 views

unable to run node in ubuntu 12.04

I installed nodejs on ubuntu from instructions given here When I write node --version in the terminal I see this : -bash: /usr/sbin/node: No such file or directory I can see node in the /usr/sbin/ ...
1
vote
1answer
225 views

Understanding NTFS-3g Inode Use

I'm running a CentOS 4.6 final box with a second drive array (raid 1, the mount is /mnt/raid, as listed below in my nagios warning) that uses ntfs-3g as the file system. My nagios warnings just went ...
3
votes
0answers
131 views

Foremost file naming - Recovery of file names from inodes

I'm hoping this is not a stupid question. (apologies if it is) I have been asked to recover some files from a corrupt Linux partition. The partition data is shot to pieces but i have been able to ...
1
vote
2answers
136 views

How can find support large files?

I would like to find all the files of my system, which sizes are more than a couple gigabits. I thought I would use find -size, but the man page states: The size does not count indirect blocks ...
0
votes
1answer
59 views

Get the number of inode in a tree

How can I get the number of inodes used by files in a given directory tree? Important: including hidden directories under it, like .git
26
votes
2answers
1k views

Why does a software package run just fine even when it is being upgraded?

Say I am running a software, and then I run package manager to upgrade the software, I notice that Linux does not bring down the running process for package upgrade - it is still running fine. How ...
3
votes
2answers
1k views

Drawbacks of increasing number of inodes in EXT4

I am currently using backintime to take "snapshots" of my file system. It is similar to rsnapshot in that it, makes hard links to unchanged files. I have recently run out of inodes on my EXT4 ...
5
votes
1answer
180 views

Finding all the hard-links of a file without traversing the file system

I have seen in this page that inodes have a link counter to know how many files (read: "directory entry") point to this inode. Is there a way to know which directories contain such entries without ...
37
votes
5answers
24k views

What is a Superblock, Inode, Dentry and a File?

From the article Anatomy of Linux File Systems by Tim Jones, I read that Linux views all the file systems from the perspective of a common set of objects and these objects are superblock, inode, ...
8
votes
2answers
1k views

List all files with the same inode number?

Lets say, when I do ls -li inside a directory, I get this: 12353538 -rw-r--r-- 6 me me 1650 2013-01-10 16:33 fun.txt As the output shows, the file fun.txt has 6 hard links; and the inode number is ...
0
votes
3answers
165 views

Question about inode and permission command

Can anyone tell me if this is true or false? Does the inode of a file have the addresses of blocks containing the file's content? Also for the permission command, there was a question asking that I ...
1
vote
1answer
318 views

How do I manually modify an inode?

I am using Ubuntu Linux and, just for fun, I want to create a hardlink to a directory (as seen here). Because I'm just doing this for fun, I'm not looking for any sort of pre-developed ...
2
votes
2answers
226 views

how can “several file nodes” be associated with a single inode?

I am trying to learn about iNodes and file permissions. I thought that there is one inode that holds the permissions for a single file. The OS pulls a single inode into memory to check permissions for ...
2
votes
1answer
275 views

Why do inode-based file systems NOT need reboot after updating library versions? [duplicate]

I am trying to understand what an inode is. However, this passage from Wikipedia puzzles me: Installation of new libraries is simple with inode filesystems. A running process can access a library ...
3
votes
2answers
435 views

Storing thousands of files in one directory

I have a web-site that I'm checking for performance issues and bugs, and i came across a caching code that caches thousands of files into one single directory. I understand that this is not good and ...
2
votes
2answers
2k views

How to find inode number using “find” command?

How do you find the inode number of the name of files that start with a particular keyword like "test"? We'll assume that there are files called: test, test1, test2.
18
votes
1answer
15k views

How can I increase the number of inodes in an ext4 filesystem?

I had a problem (new to me) last week. I have a ext4 (Fedora 15) filesystem. The application that runs on the server suddenly stopped. I couldn't find the problem at first look. df showed 50% ...
0
votes
1answer
272 views

The relationship between execute permission on a directory and its inode structure

My question deals with the relationship between the read and execute bits on a directory. I'm going to give my assumptions, first, all according to my current knowledge, then ask my question in bold ...
3
votes
2answers
460 views

Location of inodes (ext)?

Say I want to observe how the flow from file name to cluster on hard disc goes. I get the inode number of I file (which is mapped in a directory data): 1863 autorun.inf So, now i know that i have ...
3
votes
4answers
472 views

What are inodes good for?

I wonder if storing the information about files in inodes instead of directly in the directory is worth the additional overhead. It may be well that I'm overestimating the overhead or overlooking some ...
10
votes
2answers
3k views

Is it possible to change Inode count on an ext4 filesystem? [duplicate]

Possible Duplicate: How can I increase the number of inodes in an ext4 filesystem? I have a homemade NAS with Debian Wheezy 64bit. It has three disks - 2x2TB and 1.5TB, pooled together ...
4
votes
1answer
131 views

ext4 directory lists as a file

I'm working with a large (8TB) EXT4 filesystem in linux. After a power outage, the filesystem wouldn't mount. fsck is taking weeks to complete, but i ran testdisk and i'm able to see my partition ...
8
votes
2answers
1k views

why inode value changes when we edit in “vi” editor?

When I edit a file in "vi" editor the inode value of the file is changing. But when edited with cat command the inode value is not changing.
1
vote
1answer
768 views

what is inode for, in FreeBSD or Solaris

I know a little about linux kernel. BUt for Freebsd, the "vnode" actually is similar to the "inode" in Linux kernel. And there is a "inode" concept in FreeBSD or Solaris. So my question is: what is ...
1
vote
1answer
287 views

Why the inode value of shadow file changes?

I created a hard link for the shadow file. For removing the passwd of the user I opened the shadow file in vi editor and removed the encrypted passwd and then saved. The inode value of the shadow file ...
5
votes
1answer
1k views

On what occasion will inode change?

I checked manual of find , and there's an option -ctime which specify the last modification time of inode. But on what occasion would inode change ? When is that option useful ?
2
votes
0answers
277 views

Odd Inode/Ram cache drops happening in CentOS

I run a CentOS 5.7 machine (64bit) with 24GB ram and 4x SAS drives in RAID10 setup. This machine runs nginx/1.0.10, php-fpm & xcache. About a month back the RAM usage of this machine has changed. ...
4
votes
6answers
1k views

Portable way to find inode number

At first I used stat -c %i file (to help detect the presence of a jail), which seemed to work on any Linux distribution under the sun. On OS X' I had to use ls -i file | cut -d ' ' -f 1. Is there ...