Ubuntu Servers :: Options For A Larger File System?
Apr 27, 2011
I have considered a range of choices, but at the end of the day the choice I make can quite easily put into a situation that requires even more thinking.
The idea is to have an enormous file system for SAMBA that can scale from terabytes to petabytes. Such as a single directory with say 4 million MP3s in my iTunes collection. iTunes cannot use multiple drives easily.
There are lots of vendors that have offerings galore, I wanted to see what can be done with a roll your own approach.
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May 3, 2011
Using Samba I have looked into the file that stores all my web sites, there were a few strange files that get larger and larger all the time. File names are _Za01716 and _Za01820, they are nearly 50mb in size now. I know these are not Log files so what are they and can I delete them?
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Feb 16, 2011
I have a ubuntu 10.10 server with apaceh2 and php and I want to open a file larger than 2gigs
I've read there is a flag that needs to be compiled into php to do this ?
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Feb 16, 2010
I need to enlarge the root file system on a Slackware 13.0 32-bit system; it's in a simple logical partition (/dev/sda6) -- no LVM, mirroring etc. This might be a good opportunity to change from ext4 to jfs, too.Routine procedure, no? No!First off I booted Knoppix 5.31 but found it doesn't have ext4 support (no efs2ck and running fsck results in "fsck.ext4: not found").So I booted Slackware 13.0 32-bit CD-1 only to get the same as with Knoppix.I do have a GParted-liveCD 0.3.4-11 but have had mixed experiences with it so am reluctant, despite having backups.
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Aug 28, 2010
Is there some file in Linux that enumerates and describes mount options for file systems like /etc/services describes ports?
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Mar 3, 2009
I am running Fedora 10 and would like to move from my 40gb hard disk to a larger (320gb drive). I would like to take an exact image of the smaller drive and put this on the bigger drive.
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Jun 21, 2011
I have an Ubuntu server and i've installed drbl-clonezilla to clone and restore pc, I have a 40 gigabyte image to be deployed on other pc's with larger hard drive ex. 160 GB or 240giga, my problem is that when I deploy the image on a larger disk I end up with a disk with a partition of 40 GB and the rest unallocated, how can i restore the the disk and use full disk space, the goal is to automate the process. In clonezilla-drbl there is the possibility to start a "prerun" and "postrun" fonction that could help complete the deployment process.
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Feb 20, 2010
I've installed webdav on my server and I can access it fine through cadaver. However, when I try to access it via nautilus, I get Forbidden. It is NOT secured (SSL). When I try to access it via firefox, I get an error since I DO NOT have "Options Indexes" in my apache config file. If I add this option in, then I can browse the root direction and webdav folder via firefox, but still not from nautilus. what other information you need. I've googled and searched the forums for awhile, but not "solutions" I found have worked for me. I want the webdav folder to just be a single folder within the direction, so this is how I have my config file setup:
[Code]....
As a side-note...when I included "Option Indexes", it allowed me to view the passwd.dav file from firefox!That doesn't seem very good...
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Nov 23, 2010
I have recently been experimenting with installing Ubuntu 10.10 on a USB/Flash drive, and have finally stumbled on the "Universal USB Installer", using a so-called "Casper" file for persistence.Now I wanted to make the Casper file bigger, and found this article:I was reading it, and got confused at this part:"This tutorial assumes that you have already created a bootable USB Flash Drive that contains Ubuntu or an Ubuntu based Live Distro like Xubuntu, Kubuntu, Linux Mint, Crunchbang, etc. You should delete any existing casper-rw file from the drive to free up all available space before proceeding.
1. Restart your Computer, booting from an Ubuntu Live CD"Do they mean that you have to make 1 flash drive that was created with the Universal USB Installer, and has a Casper file on it, AND you have a Live CD from which you operate?If so, could I use one flash drive that acts like a Live CD (without the Casper file), and create another flash drive that DOES have the Casper file, and then boot from the one without, and follow the instructions? (Sorry for the complex sentence, didn't know how other to put it...)
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Jan 7, 2011
I'm planning to add 1tb sata disk to my lovely file-server under ubuntu 10.10,what i want is use this disk as additional storage for network user,indows and ubuntu?I mean when my ubuntu server down (worse case) I can easily take out the disk from ubuntu machine and plug in on windows machine
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Mar 12, 2011
I have noticed the (understandable) tendency of new Linux users to think about disk drives in the 'Windows way'; their first thought is to exchange a new drive for an existing one, rather than combine both drives for a larger 'file system'.
There are times when replacing one drive with another is indeed the correct action (aging drive, failing drive, slow drive, etc). But in other cases it may be preferable to use the inherent strength of the fstab (file system table) file to combine physical drives to become a larger 'file system'.
Lets first look at a user with an 8 gig netbook who is running out of space. Rather than replace the 8 gig flash drive with a 32 gig device, the old and new devices can be combined to yield a 40 gig 'file system':
This same principle can be applied to a user with a computer using an 80 gig hard drive, and who 'adds' a new 320 gig drive instead of replacing the 80 gig drive with the 320 gig drive:
This same principle can also be applied to building a massive 'file system' without the requirement of using RAID:
The above 12 terabyte system can be built using a basic motherboard with four open SATA ports and four 3tb hard drives. No server based equipment is needed; no raid hardware or software is required. This is just something that Linux does (and does very well).
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Jul 14, 2011
i am using the following command to backup and sql file:
tar -zcvf "$BACKUP_DST/$FILE_NAME.tgz" "$BACKUP_DST/$FILE_NAME.sql"
i want to make sure the compressed file wont be larger then 300mb, if it exceeds 300mb, split it into several files.
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Aug 2, 2010
I am using Ubuntu and looking for a good editor to edit a file that is > 4GB. I just need to put content at the end and beginning of the file. I suppose I could use something like
cat "text to add" >> huge_file
To append to the file. Is that the route to go? What about prepending? In general, what is the best route if I wanted to edit somewhere in the middle?
I've tried VIM and it fails miserably. I assume emacs and nano would be even worse. What else is there? I assume to accomplish what I am looking for, the editor would have to be specifically designed for this by not keeping the entirety of the file's contents in memory.
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Mar 29, 2010
I've already asked this in the mythbuntu and didn't get an answer there so I'm trying here. OK just added another 2Tb WD drive to my mdadm controled RAID5 array, and the reshape is finished:-
Code:
Code:
Mar 28 18:28:36 alpha2 kernel: [104357.343421] md: md1: reshape done.
Mar 28 18:28:36 alpha2 kernel: [104357.525114] RAID5 conf printout:
Mar 28 18:28:36 alpha2 kernel: [104357.525119] --- rd:4 wd:4
Mar 28 18:28:36 alpha2 kernel: [104357.525122] disk 0, o:1, dev:sda2
[code]...
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May 5, 2010
I had a major raid event recently which caused my Ubuntu 9.04 server to recover part of its file journal on the system partition. This caused some of the file permissions to go all funny and I now need to change them manually.
What the file permissions should for the following folders:
/etc/
/home/
/lost+found/
/mnt/
/root/
/sbin/
/srv/
/tmp/
The server is running and I fixed the some of the ownership issues already. I use a basic LAMP setup with samba, and proftp.
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May 13, 2010
I have a 9.04 64bit Ubuntu server that I use for a home file server and for downloading duties, every few days the root filesystem gets remounted as read only, usually requiring a reboot and fsck to get everything running again. The box is tucked away in the roof space to keep the noise down so it's a bit of a pain to keep pulling it out to get console access.troubleshoot what might be causing this?/ is on a raid 1 array on 2 8GB usb sticks last few lines of DMESG EXT3-fs error (device md3): ext3_journal_start_sb: Detected aborted journal
Code:
[632280.290419] journal_bmap: journal block not found at offset 23180 on md3
[632280.290470] Aborting journal on device md3.
[code]....
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Jun 15, 2010
I am having a bit of a problem with my Ubuntu Server 10.04 install. I think it might be a kernel problem. Basically, what happens is when I copy a large file (a 160GB disk image) to my drive (>60GB) the system consistently crashes after about 60GB of the file is transferred. It doesn't matter if I am sending the file using cifs, or over SSH. Checking syslog (paste dump here), it seems these flush errors always appear shortly before the crash occurs. The destination filesystem is a hardware RAID 10 array with 2TB of space. It is formatted as EXT4.
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Aug 24, 2010
I'm still pretty new to servers and ubuntu and have ran into something I could see being a problem in the future. On a dedicated remote server I have installed a web server using the "How To Forge - Perfect server set up for ubuntu 10.04 and ispconfig". I have a forum and email up and running and shoutcast radio and teamspeak3 servers also. We can also nx into it if need be. I can reformat the 1T hdd remotely from my provider control panel and ssh is installed at the same time and a new root password is sent via email. The thing is I now realise that by default the file system is written to a 10gig partition.
This might usually be ok but ispconfig uses the /var/www folder on the file system to house the forum I host and the partition is filling up. My mate I co rent with is talking about starting a parrot/bird owners forum and i might eventually like to have a gaming forum as well. I realise I should probably have set things up differently but like I said I am new at all this and tbh the home directories never going to have much in it so theres 900 gig doing nothing. So my question is can I use anything to enlarge that partition remotely? I know theres gparted on disc and all the articles I found say I need to use a disc which obviously is out of the question.
So what I think I need is some sort of partition magic for ubuntu. I would really like to expand it so all my current files etc on it would stay as is. I'm also currently looking into back up methods and wondered if that would be the way to go? Back up my file system and home directories and then reformat and make the partition larger? Or could I copy the entire www folder to a newly created folder in /home and re write the site enabled files to point to it? Would this work and if so what else would I need to edit?
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Jan 26, 2010
Everything is software raid using mdadm
3x320GB HDDs in raid 5
1x1.5TB HDDs in raid 1(don't ask)
The above are LVMed to create ~2TB of combined space using reiserFS. I'm not really happy with the performance so I'm moving to XFS while I'm at it.
I FINALLY got around to ordering 2 more 1.5TB HDDs. The end goal is.3x1.5TB HDD in raid 5 formatted to XFS for a total of around ~2.7GB of space.
1. Create raid 5 array using the new 2x1.5TB HDDs.(yes, very pointless at the moment, please continue reading)
2. Copy data from 2TB LVM to the new ~2.7TB raid 5. (will mdadm let me be an idiot? It apparently let me force create a single drive in a raid 1)
3. Move the original 1.5TB over to the new raid 5 to actually provide redundancy.
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Nov 5, 2010
Is there any software that will do full mirroring between a local and a remote file system. I have a server (9.04) and a laptop (9.10). Each user has shared a shared directory on the server, and on the laptop. Updates to files may be done on either system. I want to keep both copies syncronised. Currently I use a script based on rsync (scheduled by cron) to keep the local and remote copies in sync.
The problem with this approach is that rsync only seems to be able to handle deletion of files if one file system is the master, which is not the case in my set-up. If I move a file to a different directory, rsync will reinstate the old file as well as copying the new one. I was hoping there was some software that could do proper mirroring between the 2 systems, but6 so far I cannot find anything.
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Mar 9, 2010
What 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?
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Feb 3, 2010
I was wondering if I can use my server as a PXE server so I can load an OS to a machine on the LAN?
Ideally I would like a choice of operating systems, so I was thinking a menu would be ideal.
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Jun 26, 2010
Attempting to create a backup script to copy files from one file system to a remote file system.
When I try this I get:
Quote:
# tar -cf - /mnt/raid_md1 | gzip -c | ssh -i ~/.ssh/key -l user@192.168.1.1 "cat > /mnt/backup/fileserver.md1.tar.gz"
tar: Removing leading `/' from member names
Pseudo-terminal will not be allocated because stdin is not a terminal.
ssh: Could not resolve hostname cat > /mnt/backup/fileserver.md1.tar.gz: Name or service not known
[Code].....
I know that the remote file system dir is RW and the access is working fine. I am stumped...
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Dec 29, 2010
We have recently built some RAC (OS:RHEL55) servers and after the Oracle guys have installed their application, somehow the directory / is using the maximum space. I contacted the Oracle team & they say that their RAC installation doesn't create any files in the / directory. This is the o/p of '/' directory file system:
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/datavg-vol2 498M 382M 62M 88% /
Also, when I checked the file sizes, I found that the following files were taking more space:
/etc/selinux/targeted/modules/active/
-rw------ 1 root root 17M Nov1 base.linked
[code].....
I don't know what these files are doing there, when I did a cat and cheked, I found the files containing this data:
nf_tre--
stem_dbusd_var_run_t...and some stuff like this Unable to decide whether or not to remove these files. Also, is there any way to find out what files are taking more space and whether they can be deleted or not? in order to free up some space in the / direcoty. As there are 10 RACs that we've build, I got to do something to fix this for all of the 10 servers.
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Jul 27, 2011
I'm trying to use Pinta Image Editor but I cannot find an option to preview the image, in a viewable size, before I work on it.
what to do in this situation? Prefferably it would be nice to view all the pictures as thumbnails.
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Jan 20, 2010
Can list options available for server redundancy? (i.e. fault tolerance methods so that if a server goes down another server can take over). Also is it possible to implement RAID1/disk mirroring across servers?
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Dec 20, 2010
I am new to Ubuntu and am trying to learn. Using 10.10 on HP notebook. The Hardware option is missing from the menu. System / Administration / Hardware is not there. System / Administration / * all seem to be there just no hardware option.
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Jun 18, 2010
I have a problem : " bootmgr is missing" It occurs when I plug the SATA 1 TB(data stored with windows file system).
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Oct 22, 2010
I created a file to show phpinfo. But configure command is missing from the list.
Check some other servers, confiugure command is there.
Is this an ubuntu issue?
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Mar 19, 2011
I installed Ubuntu for net book 10.10 with partition from USB port. after installation, I cannot find my windows files. The system is not showing me options to boot from windows 7 at the start up. How can I get my files please.
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