CentOS 5 :: File System Lays Down / What To Do?
Jun 19, 2010Where can i find detailed procedure for centos system shutdown/halt, I wanted look on what parameters centos uses or sends at the time when it lays down file system.
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Security :: Plugin - FireSheep - Lays Open Web 2.0 Insecurity
Oct 26, 2010Quote: It's no secret that Web sessions that use the bare HTTP protocol to transmit and receive data are susceptible to a variety of security attacks. What's less clear is how much information is floating out there in the ether, especially with the rise of "Web 2.0" and rich social networking applications and other Web based sharing tools.
But now a pair of researchers have created a tool to identify and capture the social networking sessions of those around you. The tool, a Firefox browser extension dubbed "Firesheep," was demonstrated at the ToorCon Hacking Conference in San Diego on Sunday. Its primary purpose is to underscore the lack of effective transaction security for many popular social networking applications, including Facebook, Twitter, Flickr and iGoogle: allowing users to browse public wifi networks for active social networking sessions using those services, then take them over using a built-in "one-click" session hijacking feature. Firesheep works on unencrypted wireless LAN connections with services that do not use secure HTTP.
CentOS 5 :: Enable Xfs File System?
Aug 28, 2009I just loaded 5.3 from the CD's. How do I enable XFS file system support.
View 10 Replies View RelatedCentOS 5 :: How To Repair File System
Oct 11, 2009I fouled up the file system when removing a drive. How do I fix it, or do I need to re-install?
The system boots to the point in the GUI where it checks the file system. It then suggests that I run fsck without the - a and -p options, and the drops to a sheel.
I enter the root pwd and then it says: "(Repair fileystem ) 1#" What do I do from there?
CentOS 5 :: Mounting Windows File System?
Jun 2, 2009I have a dual boot system (CentOS and Windows XP Pro). The computer has 2 disks with the operating systems on sda. My data files are on the 2nd disk (sdb I think). I would like to be able to access the data files on sdb from CentOS. I tried issuing the Linux command:mount -oro -t ntfs /dev/sdb1 /mnt/winbut CentOS tells me that ntfs is not a file system it recognizes. Even if I leave out the -t ntfs I get the same message. Any ideas on how I can get access to the Windows files while in the CentOS boot?. I got the idea for the above mount command from the book: Fedora 10 and Red Hat Enterprise Linux Bible byCristopher Negus.
View 4 Replies View RelatedCentOS 5 :: Bypass File System Check?
Dec 1, 2009On my laptop I have a dual boot system, CentOS 5.4 on one partition and Windows Vista on the other. In Windows, I have a program installed that allows me to access my linux partition so I have access to the files. Every time I boot into linux after accessing the linux partition through windows, I get a forced file system check. I was wondering if there is a way to disable or perhaps bypass this check?
View 1 Replies View RelatedCentOS 5 :: How To Cleanup Root File System
Jan 31, 2010I have a problem that is probably simple, but have not yet found the answer on any forums or by Googling. First my system specs:Tyan 2610 motherboard w/ 2 x PIII 9334 gig PC133 SDRAM
1 x 5 gig hd (system)4 x 500 gig hds w/ 3Ware 7500 controller set to RAID 5, (1.5 TB) mounted as /homeCentOS 5.3 running my smb and nfs mountsMy problem is that I have run out of space on my / (root) file system, (the 5 gig). Since I am planing to rebuild my file server with larger hard drives, (2 x's 60 gig SATA's set to RAID 1, 6 x's 1.5 TB at RAID 5), within the next 2 months, I would like to try to clean out any unneeded crap rather than adding a hard drive and expanding my root file system. I have done the following:
Removed old unused kernels
cleaned up /var/log/
cleaned up /tmp
[code]....
CentOS 5 :: Move System And File Structure To New Box
Feb 7, 2011I am new to Linux and not sure how to explain what I want to do, but I will give it a try. I have a system running CentOS 5.x on a system the is dying. Is there an easy way to migrate the system over to a brand new system that I recently purchased? I only have / and swap partitions, so nothing fancy; however, I have read that Linux is nothing like Windows when it comes to applications, and I could simply drag and drop files on the new server; however, I suspect that there is more involved than that. I hope I can just move the files over, and the system will boot; however, I am worried about new hardware on the new system. I am looking for recommendations to this issue. I am not sure if I have described it correctly; however, just point anything out that I need to change.
View 5 Replies View RelatedCentOS 5 :: Parted - How To Find File System Type
Feb 18, 2010When I run 'parted' and then type 'print' to see the partitions that are available, I see two entries: /dev/sda1 and /dev/sda2. /dev/sda1 is of ext3 type whereas for /dev/sda2 nothing is specified for file system type. The LVM flags are set for /dev/sda2.
When I tried to resize /dev/sda2, it gives me the error "File system type not recognized". let me know how to find out the file system type of the partition.
CentOS 5 Server :: Way To Allow Two Servers To Use Same File System On SAN Using ISCSI?
Mar 9, 2010What is the correct way to allow two servers to use the same file system on a SAN using iSCSI?Is it GFS on the two servers?
View 3 Replies View RelatedCentOS 5 Server :: Configure Global File System?
May 17, 2010I need to enable GFS for a shared storage file system, I need to share it to different ip's so that every one get syn data on that file system
ex : /data on 192.168.0.10
I need /data to be in GFS and need to share to 192.168.0.20 & 192.168.0.21
so that this two machines can have sync file system
/data is in shared storage
CentOS 5 :: Vfat File System Doesn't Recognize By 5.6?
Aug 10, 2011my android phone doesn't seem to be recognized by the system and it's file system is vfat how did it occur while i've been using my phone as a storage device it still works yesterday but upon plugging it in the usb port it says "cannot mount volume".....
View 1 Replies View RelatedCentOS 5 :: Which File System Use 5.6 By Default Ext3 Or Ext4
Aug 29, 2011Which file system uses Centos 5.6 by default, Ext3 or Ext4? I have installed on Ext3, it's upgrade from 5.5, but howto convert into Ext4 without damage or lost data?
View 3 Replies View RelatedServer :: Dynamically Grow The Ext3 File System In CentOs?
Nov 3, 2010I have configured a "Syslog" server on /var directory as a separate ext3 partition - to receive the logs and events from the clients & the firewall as well. The directory needs to grow dynamically as the logs are populated. Is there a way i can make the filesystem grow dynamically as and when the directory is full.
View 6 Replies View RelatedCentOS 5 :: Need To Move Space From Root File System To Swap
Apr 7, 2009I currently have a server with the default VolGroup00 that contains logical volumes for the root file system and swap using logical volumes LogVol00 (root) and LogVol01 (swap.) I need to take space from LogVol00 and move it to LogVol01. I have found documentation for increasing the swap, and the resizing the logical volumes. However in the documentation and the man pages it says that I have to reduce the size of teh file system on the logical volume I am going to shrink. I have found documentation resizing the logical volumes but not the file systems.
View 6 Replies View RelatedCentOS 5 :: Remove Watch For File System Object At Path
Nov 5, 2010Per the man page, to remove a watch, do the following: -W path.Remove a watch for the file system object at path.
View 3 Replies View RelatedCentOS 5 :: Find Out The File System Of An External Hard Disc?
Dec 28, 2010Assume I have plugged in an external USB hard disc.
How can I find out (from terminal cmdline) the file system (ext2, ext3, reiserfs,...) of this hard disc?
From Ubuntu I know the two commands:
sudo blkid -c /dev/null
or
sudo fdisk -l
but these are not known in CentOS.
What are the corresponding cmds in CentOS?
CentOS 5 Server :: Unattended Reboot With An Encrypted Root File System?
Mar 31, 2009Centos 5.3 includes Ext4 and improved support for encrypted file systems but it appears to be aimed at laptop/desktop systems, in that a password must be entered at boot time.
Is it possible to have a server with an encrypted root file system boot up without entering a password?
Mandos will do it...
http://wiki.fukt.bsnet.se/wiki/Mandos
...by serving up the password from another server...
http://packages.debian.org/squeeze/mandos
...to a client loaded into the initial RAM disk environment...
http://packages.debian.org/squeeze/mandos-client
...but it's not available on CentOS, and is only in Debian unstable.
Is there a similar (or any) solution for CentOS?
In particular, I'm envisaging encrypted virtual machines being served passwords from their virtual host.
Alternatively, the data that *really* needs to be protected could be encrypted while the system core remains unencrypted. But then the keys to decrypt the file system must be stored in the unencrypted portion, so this is not an effective method.
CentOS 5 :: Dovecot/pop3 Email Service Following File System Restoration?
Sep 11, 2009I am trying to prepare procedures for email restoration following a file system loss that contained user Maildir directories. Assuming that my most recent backup is earlier than the last time that many users received and downloaded email, the restored mail directories will not contain messages that were previously received and downloaded to clients following the backup and preceding the crash. This is not a problem in itself, however, it does appear to cause problems for the email clients.
My desire would be for email clients (outlook, outlook express, thunderbird) to properly recognize the messages that currently exist on the server, ignore previously downloaded messages and download newly arriving messages.The behavior that I am seeing is that the email client fails to recognize that any new messages exist and fails to download any messages at all. By removing the dovecot.index... files and the uidlist file, the clients will download ALL messages that are present in the "new" and "cur" directories even if previously downloaded. This is also an undesirable outcome.
CentOS 5 Hardware :: File System Check Fails On Boot - Device Busy
Jul 20, 2009The server comes up after rebooting and after setting the hostname it starts setting up logical volume management. It says that 2 logical volume(s) in volume group "VolGroupOO" now active But then it starts to check the file system and errors with fsck.ext3: Device or resource busy while trying to open /dev/sdb1 [failed]
***An error occured during the file system check
***Droppping you to a shell, the system will reboot when you leave the shell
Give root password for maintenace
After I log in with the root I get the message mesg: error tty device is not owned by group 'tty' Can the forum tell me how to troubleshoot this issue so I can boot back up again? I have 2 harddrives in this server and only 1 drive was detected when I first installed CentOS. The error first appeared when I mounted the 2nd drive at the mount point /UserGeneratedData. drive was formatted with ext3 before mounting and did not have any data on it I don't want any software RAID if thats what seems to be going on with "VolGroup00"
Ubuntu :: Error Creating File System: Helper Exited With Exit Code 1: Cannot Open /dev/mmcblk0p1: Read-only File System
May 2, 2010I bought a new SD card which I intend to put some MP3s on - except that I can't write to it because it tells me the destination is Read Only. No-probs thinks I: I'll just reformat it.
"Error creating file system: helper exited with exit code 1: cannot open /dev/mmcblk0p1: Read-only file system"
Various chmod commands all result in Read-only file system. I tried umount then mount commands, but it couldn't find it to mount once I'd unmounted it using the same /media/ file path (I assume it's the only one).
Red Hat :: File System Corruption - Super Block Could Not Be Read Or Don't Describe A Clear Ext2 File System
Jul 12, 2010My Redhat Enterprise Linux 4 with 6x partitions (/, /boot,/home, /usr, /var, /tmp) of 6.0 GB IDE Hardisk was working quite fine. I decided to create LVM on /home and /var partitions but due to some errors occured and I delete the /home partitions. That's why partition table altered. I then delete 4,5,and 6th partitions (/home, /var, /tmp) partitions and now try to create one by one but following error is coming:-
[Code]....
The Super block could not be read or do not describe a clear ext2 file system. E2fsck b 8193 <device> I have tried following commands,but could not successful:- e2fsck -p /dev/hda7 (where hda7 was created but afterthat it was deleted) e2fsck -a /dev/hda7
OpenSUSE Install :: Get A 64 Bit File System To Read 32 Bit File System Drives?
Feb 2, 2010Have just assembled a new computer and thought I would install the 64 bit version of openSUSE 11.2 in a "Windows free zone". After a hiccup or two I have managed to get a system of sorts running but on trying to copy files from my old computer(via a memory stick) it tells me that Vfat is an unknown file system.On my old computer I am running 32 bit openSUSE 11.2 as a dual boot system with Windows XP and have no problems moving files between the two different file systems.Is it possible to get a 64 bit file system to read 32 bit file system drives and if so how do I do it?
View 7 Replies View RelatedCentOS 5 Server :: NFS Performance With Files Not Yet Cached By The Server File System?
Feb 25, 2009I have a weird performance issue with a centos 5 running a nfs server and a rh8 client. I think the fact that it is rh8 client should be downplayed. It is just that with rh8 client the performance degradation seems more clear. See test details below OS in server is Centos 5 x86_64 kernel 2.6.18-92.1.22.el5
1Gb connection between machines File to test over NFS is a 1GB file. First of all I wanted to measure how the network alone performs while using NFS. So in the server side I run a "cat" command on the 1GB file to /dev/null. Please note that the disk read speed is about 98MBs. At this point the file system has the 1GB file cached in memory. In the client side a "cat" on the same file gives me a speed of about 113MBs. It seems then that the bottleneck in this instance is the network and it is very close to nominal speed. So the network performance is really good. (BTW I know that the server got that file from cache because a vmstat or iostat shows no disk activity.)
The second test is reading from disk with no caching involve. In the server I flushed the 1GB file from the memory. For instance by reading another 5GB file and I repeat the same thing as above in the client (a cat on the 1GB file). Now, the server has to go to disk.(vmstat or iostat shows the disk activity). However the performance, now, is about 20MBs, I was expecting something closer so 90MBs. (since the reading speed in the server in the first test showed 98MBs).
This second test was repeated for ext2, ext3, xfs with no significant differences. A similar test using a RH8 NFS server and client gets me close to 60MBs for a 1GB file not cache by the file system in the serverSince network speeds and disk read speeds are not the bottlenecks ... what or where is the limiting factor then?
CentOS 5 :: Installation Freezes At "Formatting / File System" 99% With 5.3
Apr 20, 2009I used Centos 5.3 x86_64bit cd1 to install IBM xSeries 260 Server,it's freezed at "Formatting / File System" 99%(IBM 300G),then for a long time,it display"Can't mount /,press to reboot.".I tried it many times,this problem still
View 1 Replies View RelatedCentOS 5 Hardware :: Receiving "wrong File System Type" Messages?
Feb 9, 2010I tried to post this then couldn't find it anywhere, so I will try again. I am wondering if there is a way to determine what file system type was put on a volume when the file system was made? I have a MD0 device that wouldn't mount. I was receiving "wrong file system type" messages.
I tried df but this only works with mounted file systems correct? I am looking for a command to run on a drive/volume that is not mounted so I can figure out what file system is on it.
This time I was able to: mount /dev/md0 /mnt/storage without and entry in the fstab file. I then just entered mount and it displayed the file system as jfs.
Is there another way to determine the file system type?
CentOS 5 Networking :: Add "Root File System On NFS" To 5.5 ?
Jun 18, 2010I'm trying to add "Root File System on NFS" to overcome some issues that I seem to be having putting VM's on an NFS share. I'm trying to configure the kernel, but can't for the life of me find the option to add Root FS on NFS. Is this removed from the configurator with CentOS 5.5/Xen, or is it configured already?
View 1 Replies View RelatedCentOS 5 :: Remove A User From The System Using The Domain Userdel Guest Error "mailbox File Already Exists"
Jan 6, 2010when a remove a user from the system using the domain userdel guest the user gets removed but the /home/guest doesn't get removed so i remove it by command rm -rf /home/guest then i recreate the user by giving in the command useradd guest now it gives the error mailbox file already exists what does it mean when it says so though this command creates the user.
View 3 Replies View RelatedUbuntu :: Convert FAT File System To NTFS File System?
Mar 13, 2010How to convert FAT file system to NTFS file system via Ubuntu,are there any commands to do this task?
View 2 Replies View RelatedGeneral :: Partitioning - Difference Between File System Created By Fdisk And File System Created By Mkfs?
Aug 1, 2011I'm a little bit confused with partitioning the filesystem in Linux. the difference between creating the file system with fdisk and mkfs (when formatting the disk). I can't clearly tell my problem, so please look at this picture:
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