Red Hat :: Calculate Bytes-per-inodes Value?
Feb 17, 2010I am a brand new member
here is my question :
in a RedHat configuration :
i need to be sure that a partition has been formatted with those parameters code...
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General :: Calculate Usable Bytes On A Disk Partition?
Mar 10, 2010How do you calculate the number of usable bytes on a disk partition? When I do an fdisk -l I get this:
Disk /dev/md0: 192.0 GB, 192069500928 bytes
2 heads, 4 sectors/track, 46891968 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
[code]...
Ubuntu :: Error: Allowed Memory Size Of 20971520 Bytes Exhausted (tried To Allocate 7680 Bytes) In /var/www/index.php On Line 2
Jan 9, 2011I recently had to move to a new machine, everything went well except for one thing. I did fresh installation of LAMP server all with default configs. Every time I'm using PHP script to that invokes include, require or require_once I get the following error:
Code: Fatal error: Allowed memory size of 20971520 bytes exhausted (tried to allocate 7680 bytes) in /var/www/index.php on line 2 index.php file: PHP Code:
<?php include "index.php";?>
icukapi.php file:
PHP Code:
<?php echo "test";?>
My memory_limit in php.ini is set to 20M. I tried to increase that however it didn't quite work. PHP seems to allocate all possible space and return that message every time i try. If somebody has an idea of how to fix it I would be more than grateful. I spend quite a long time searching for an answer however the all things i found suggested increating memory_limit which in this case doesn't work.
Ubuntu :: 10.04 Running Out Of Inodes?
Nov 17, 2010Several people have said that those of us who are having problems with Ubuntu (10.04) should ask some specific questions. Here is on below which I cannot get an answer to and never happens in Windows. Can any Ubuntu expert answer it for me? Would really restore my faith in Ubuntu (and go onto the other problems I have with it)I think I am running out of inodes on my eeepc701. It has happened before when I was using Xandros but now I am using Ubuntu 10.04.I get the following output:
Code:
df -i
Filesystem Inodes IUsed IFree IUse% Mounted on
[code]....
General :: Insufficient Inodes On A FS?
Jun 21, 2011To fix the insufficient inodes issue on a FS shouldn't be involved File System extend or House Keeping of existing File system.
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Jan 18, 2010My server started acting flaky this weekend and my Webmin interface was throwing strange errors. I finally tracked it down to the fact that I was out of inodes on my primary partition. I'm fairly certain that the /tmp folder has an outrageous number of files in it.I can't do an ls on the directory because the console just sits there forever after I issue the command. I also tried to do an rm -rf on the /tmp directory and it did the same thing.
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Jan 18, 2010My server started acting flaky this weekend and my Webmin interface was throwing strange errors. I finally tracked it down to the fact that I was out of inodes on my primary partition. I'm fairly certain that the /tmp folder has an outrageous number of files in it. I can't do an ls on the directory because the console just sits there forever after I issue the command. I also tried to do an rm -rf on the /tmp directory and it did the same thing. how I can clear out this directory?
View 1 Replies View RelatedGeneral :: Filesystem With Inodes Close On The Disk?
Jan 9, 2011I'd like to make the ls -laR /media/myfs on Linux as fast as possible. I'll have 1 million files on the filesystem, 2TB of total file size, and some directories containing as much as 10000 files. Which filesystem should I use and how should I configure it?As far as I understand, the reason why ls -laR is slow because it has to stat(2) each inode (i.e. 1 million stat(2)s), and since inodes are distributed randomly on the disk, each stat(2) needs one disk seek.Here are some solutions I had in mind, none of which I am satisfied with:Create the filesystem on an SSD, because the seek operations on SSDs are fast. This wouldn't work, because a 2TB SSD doesn't exist, or it's prohibitively expensive.
Create a filesystem which spans on two block devices: an SSD and a disk; the disk contains file data, and the SSD contains all the metadata (including directory entries, inodes and POSIX extended attributes). Is there a filesystem which supports this? Would it survive a system crash (power outage)?Use find /media/myfs on ext2, ext3 or ext4, instead of ls -laR /media/myfs, because the former can the advantage of the d_type field (see in the getdents(2) man page), so it doesn't have to stat. Unfortunately, this doesn't meet my requirements, because I need all file sizes as well, which find /media/myfs doesn't print.Use a filesystem, such as VFAT, which stores inodes in the directory entries. I'd love this one, but VFAT is not reliable and flexible enough for me, and I don't know of any other filesystem which does that. Do you? Of course, storing inodes in the directory entries wouldn't work for files with a link count more than 1, but that's not a problem since I have only a few dozen such files in my use case.
Adjust some settings in /proc or sysctl so that inodes are locked to system memory forever. This would not speed up the first ls -laR /media/myfs, but it would make all subsequent invocations amazingly fast. How can I do this? I don't like this idea, because it doesn't speed up the first invocation, which currently takes 30 minutes. Also I'd like to lock the POSIX extended attributes in memory as well. What do I have to do for that?Use a filesystem which has an online defragmentation tool, which can be instructed to relocate inodes to the the beginning of the block device. Once the relocation is done, I can run dd if=/dev/sdb of=/dev/null bs=1M count=256 to get the beginning of the block device fetched to the kernel in-memory cache without seeking, and then the stat(2) operations would be fast, because they read from the cache. Is there a way to lock those inodes and/or blocks into memory once they have been read? Which filesystem has such a defragmentation tool?
Ubuntu :: List Directories By Number Of Inodes Used?
Mar 21, 2010I recently used up all my free inodes on my server. I had a bunch of mail messages that were sitting there using up a bunch, so I cleared the postfix queue. That gave me some room. What I'd like to do, is get a listing of the directories using the most inodes (or containing the most number of files), so that I can find the other culprits.Basically I want the output of "df -i" but to be able to do it recursively on a specific directory.
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Jul 16, 2010Is there a command to count inodes with in a directory?
I know I can see total inode usage with:
df -i
And I know I can find total number of files with:
find ./ |wc -l
But how can I find inodes? As files over 8kb (if using the default partitioning of 1 node over 2 4kb blocks) would take up more than 1 inode.
Ubuntu :: Orphaned Inodes (Each Time The Number Is Different) On EXT4
Dec 28, 2010Each time I start my Ubuntu 10.10, I notice this messages in dmesg:
[Code]...
Each time the inode number is different. I made SMART tests on the disk, and all went fine. Do I have to worry? Could it be something related to a wrong shutdown? Update: I have just ran an fsck at boot, but when I logged in, the same orphan_cleanup was in dmesg.
General :: Increase Number Of Inodes Without Re-creating Partition?
Jul 14, 2011How can the number of inodes be increased on an existing EXT3 or EXT4 partition without re-creating the partition?
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Apr 27, 2011i manage to delete some files from the system. now i need to recover them.. i know the inode # (through ext3undel) and also the size.Quote:Unfortunately, we cannot automatically obtain the name of a deleted filefrom Unix file systems - since the connection between the iNode (whichholds the MetaData, including the file namee real data is droppedon deletion. However, we can obtain a list of names from the deleted files.How can i use this information to recover the files?Also can i search the text from a partition? (file don't exists). As i need figures
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Nov 4, 2010The Linux File system uses the file path notation to abstract how data is accessed. Path really must be an environmental variable for the applcication that converts the path name to an inode so what is this application/Daemons name?
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Jan 15, 2011I have searched google for a couple of days, and I keep hearing about an INode limit on filesystems, but that doesn't seem to be the case.
Now whenever I try to download something, watch a ..... video, or listen to Pandora radio, it just stops playing after 2 seconds. Downloading says "No space left on device".I also get the error as root.I do have 5% and more free of HDD space. After reading the similar posts I checked all of this, so if I am overlooking something on the forum, I apologize for an extra post about.
General :: What Number Of Bytes Should Set The Bs To In The Dd Command
Apr 3, 2011I have just created a usb boot disk so that I can install Fedora 14.I used the following which was successfully. However, I am left wondering what does the bs parameter actually does. I know it mean bytes and copies these at a time. But how do I know what to set it to?dd if=F14-Live-i686.iso of=/dev/sdb bs=8MIn the above example it is set to 8MB. However could I set this to any value that I want?
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Jan 8, 2011How do fix my Swap Partition? Last night I added unused space to the main Ubuntu partition. Now I noticed the Swap Partition is always at 0 bytes. I'm using a Sony Laptop, and have enclosed two screenshots. One of the Disk Utility and a system monitor.
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with the other options that get only byte of the specific IP address?
Programming :: Fill A File With N Bytes Of A Given Value?
Dec 17, 2008How do i fill a file with <n> bytes at a given value ,for example 3?
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Jan 14, 2010Every single blank CD i put into my computer show it has 0 bytes of memory and i cannot write things onto them. I dual boot 9.10 and Windows XP, and Windows reads them just fine. Ubuntu will mount the disk as "Blank CD-R Disc, i can access it, and everything works except when i look at the properties it says there are 0 bytes used and 0 bytes free. The drive reads discs with data on them just fine, and they work flawlessly, its just blank discs that dont work. What i need to know is if there some property i need to change or a line i need to put in the terminal to make it read blank discs? Or am i completely screwed?
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Dec 5, 2010As a recent migrant to Ubuntu from Windows, I was expecting to be able to compare the sizes of two folders or set of folders by Bytes (as in windows). I'm slightly OCD when it comes to my personal files and folders, and I like to maintain identical backups in various pen-drives; as such, I was hoping to be able to track the file sizes of each folder set, but I can only do so in Kilobytes... Is there any application or other means by which to compare sizes in bytes --as is the case in windows?..
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May 5, 2010I am trying to write some code that interfaces with an AVR over a serial port. Basically I send a command then read the output which is 6 bytes. I need to receive all 6 bytes before the program continues. Is there a way to do this? If I use read() it returns -1 unless I add a delay before reading the port. Is there a way to get it to read the 6 bytes as soon as they arrive?In python you simply say how many bytes you want and the max time you are willing to wait which seems a whole lot easier than read
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Mar 28, 2011I am wondering if it's possible to log the number of bytes a connection transfered when the connection is complete with iptables. I know I've seen this sort of information in Cisco FWSM logs, where the "Teardown" entry of the logs has the bytes transferred for that connection. Is it possible to have something similar to that with iptables? Where the initial connection attempt is logged (i.e. NEW, which I have logging fine) AND an entry for that connection that includes the bytes transferred?
View 6 Replies View RelatedSoftware :: Overwrote First Bytes Of Windows Partition?
Dec 5, 2010This question is only partially linux-related, but I accidently typed cp file /dev/sda2 instead of cp file /mnt/sda2. The first 300 bytes or so of the ntfs partition were overwritten and now it can't mount and can't boot. I figured I would try copying the first 4096 bytes from another ntfs partition and see if that gave it enough to at least boot. It didn't and I'm wondering if there's any way to fix this sort of thing easily (without downloading an entire Windows 7 DVD) and what exactly I overwrote that was so important.
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Mar 4, 2011I have a vector of octets that needs to be converted to a std string. I'm currently doing it this way:
Code:
stringstream ss;
for (unsigned int i=0; i < data.size(); i++
{
ss << data[i];
}
string s_data = ss.str();
This works, but is there any better way to do it?
General :: Search Partition For Specific Sequence Of Bytes
Aug 17, 2010I lost an important file. I know what bytes the file begins with. How can I search the partition for the sequence of bytes?
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Oct 11, 2010I have an external hdd which is formatted with fat for use by both on linux and windows. The issue is that I can't delete some of the files I have which show up with size 0. Also, the modification timestamp (as detected by Krusader, the file manager I am using) is 1935. How can I delete these kind of files without affecting the running fs?
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Aug 23, 2011I'm currently using mogrify -strip image.jpg to remove unwanted bytes from images, it was suggested I could remove further data by using jpegran from libjpeg, something like:
jpegtran -copy none -optimize -outfile image.jpg image.jpg
The problem I'm having - if it even is a problem - is that jpegtran doesn't seem to actually do anything that mogrify isn't already doing. In all my testing the filesize just stays the same. If I remove the mogrify part of my code and replace with jpegtran then it seems to perform the same function.
For example:
image without compression: 300k
image with mogrify -strip + jpegtran: 272k
image with mogrify -strip only: 272k
image with jpegtran only: 272k
I was under the impression though that mogrify just removed image profiles/comments and that jpegtran did this as well as losslessly compressing the image to make it smaller. Am I missing something?
Ubuntu :: File Transfer Speed Shown In Bytes/sec ?
Apr 20, 2010I have few different usb cards and socets , some of them i have really hotwired.. and i would like to find out where to keep my usb-hdd . few months ago i would use "total commander" it would show .. copying-444Kb/s but these times are over...
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Aug 18, 2010Visibly the 2 tb are not supported by Ubuntu. cfdisk does not like my harddisk not fdisk. I am bit stuck. I havent X11
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