Ubuntu Servers :: Choice Of Filesystem For Hotswap
Apr 7, 2011
I'm installing Ubuntu 10.04 server on a HP MediaSmart server. Attached is an eSATA multi-bay with four hotswap disks.Since these disks are rotating on a daily basis I'm looking for the best filesystem for hot swapping purposes. If there is no choice I'll just stick to ext4 with safe unmount. But if its possible I'd like something so I could pull the disk out without damage. In my case it would be safe to assume that the disk hasn't been written to in the last 5 minutes before rotating.
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Jun 24, 2011
I have a bunch of Windows servers and they all connect to 2 networks. One of them is all public IPs (an entire /24) which is protected by a pfsense firewall. The other network is just a 48 port gigabit switch that each machine accesses using a private (192.16 static IP on a separate nic. There is no gateway/DNS/DHCP server on this private network and we want to keep it that way.
I want to deploy a ubuntu server that will connect to both networks. This server will not sit behind our firewall. It will have a public IP address from our /24 and be connected to the switch that feeds our firewall and a second nic with a static private IP that will be connected to our private network. This server will need to run nagios, run a few command line items that grep log files and serve the output via apache, and act as a VPN to allow an outside machine secure access to the private network. Sitting on this private network are various web based GUIs for the switches, UPS boxes, etc that we do not want exposed directly to the Internet. Both of these networks are mission critical so I can't change any existing settings and I can't add anything to the existing firewall. There would only be a couple of VPN connections at a time.
Do you think that ubuntu 10.04 LTS server (32 bit) would be able to handle this? I am looking at running it on a supermicro Atom D525 box with 3G of ram and a small SSD for storage.
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Aug 26, 2010
what is the best way to go about swapping out a windows installed hhd and pluging a linux installed one back in My system is P4SGX-MX asus motherboard with 2.8 Ghz pentium 4 processor 1 gb sd ram in two sticks and a ATI radeon 7500 128M 64B ddr pci graphics card, has two 40G hhds installed so have tryed unplugging both of those and plugging back in the linux installed one which is also 40G all works well up until the point of booting the kernel then it just hangs with a flashing cursor the version of linux on the disk is redhat 2.4.20-8smp and file system is ext2fs I would like to have a play with linux Cheers oh and one more thing it has Grub installed as the boot loader
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May 18, 2011
I am very new to linux, and I have a question regarding the filesystem check (fsck). The power recently went out and when I tried to restart linux the following error appears:
*/dev/sda1 contains file system w/errors, check forced it then goes on to say..
*An error occured during the file system check. Dropping you to a shell; the system will reboot when you leave the shell. Give root password for maintenance (or type Control-D to continue) I wasn't sure what to do, but checked some other online forums and they suggested running fsck manually - so I typed in the root password - and used the command, "fsck -A -V ; echo == $? ==" it then gave the following message
*WARNING!!! Running e2fsck on a mounted filesystem may cause SEVERE filesystem damage
*Would you like to continue (y/n)
Again, I wasn't sure what to do so i just checked no. I then manually turned off the computer and was prompted at the beginning to press Alt-3. I was brought to another screen and it informed me one of the drives was degraded and suggested rebuilding the array. I tried doing this, but it still brings me back to the original error of, "/dev/sda1 contains file system w/errors, check forced," and the process continues.
Also, when I tried to rebuild the array, I didn't backup any of the data on our home directory before doing this (which was probably a big mistake). After being prompted to type the root password, I was able to give the ls command and look at all the directories...the home directory where our data was stored was empty and I am afraid I may have lost some information. Is there a possibility that data was lost when I was trying to rebuild using the old drives?
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Jul 8, 2011
I want the users of the other machines, which have accounts in my server, to mount their home directories in the server. I managed to do everything, except that for the moment I can only mount their home directories by being the superuser of the server, a privilege that I don't want to give to the users. Also, I don't want their home directories to be mounted automatically. Thus, from a "normal" filesystem share, I want to: 1-The home directories of user in other machines be mountable in the user areas of the server (I can do that already).
2-I want that the users be able to mount by hand their directories, so that the directories are not permanently mounted. Currently, I can only mount and umount being the superuser of the server. I don't want to give superuser privileges to all server users.
3-I don't want their directories to be mounted on startup (otherwise I could simply add the mounts to /etc/fstab). Thus, does anyone knows how can I give the users the privilege only to mount a specific filesystem?
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Feb 15, 2010
i have a question about the best choice for a filesystem: We have in our company a productive webserver running debian with nginx webserver to serve images. The number is about 15 million, they are around 2kb or 3kb of size each and they are stored under some subdir in /home with a hashed subdirectory tree which is 2 leves deep. the images are copied with nfs from some other machine time to time. We get high load when this copying is running. Currently we are using ext3, and considering moving to jfs, cause its relativly low load impact, but i am still courios about the performance. I think serving lots of images is often practiced thing, so i would be interested what others are using as filesystem in this scenario, or if someone could make a recommendation for our case.
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Mar 1, 2010
My filesystem is almost full and the problem is in the proc folder.What does that folder contain and can I delete something from it?
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Mar 31, 2010
I'm currently running a small server using 9.10 and I wondered if using groups was a possible route in order to keep users away from the bulk of the file system and keep them in locked their home directories.
What I planned to do is use a group named 'allowsystemfiles' to be added to admin accounts, then to set parts of the file system to that group, along with the permissions 0760 to keep non-admin users out.
Is is a good idea or will this hose my system?
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Oct 21, 2010
What is the recommended filesystem to use when creating a home server/nas?
I'd be sharing files using SAMBA, DLNA Server or some sort of streaming. I'll have two win7 laptops, 2 ubuntu desktops and ps3 accessing the files. Most of the time the server will just 75% read from 25% writing.
Would ext4 be an ideal?
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Feb 9, 2011
I have a very specific requirement outside the typical use case of "enterprise server". If possible, I need to run a FUSE filesystem on a headless server, and share it via Samba.Physical security is a non-issue.I see two challenges with this, that Google and I have been unable to figure out: I'm assuming that in order to mount a FUSE system, a user must be logged in. (Hence the "U" in "FUSE".) So the first challenge is how to get Ubuntu to automatically login, on the physical console, to a user terminal session. (I know this can be trivially done in GNOME, but this won't have X-Windows or GNOME installed.) This has to happen automagically after boot-up; manually logging in locally or via SSH isn't an optin.Second challenge (?), how to share a FUSE file system via Samba?
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Mar 22, 2010
My UBUNTU 8.04 server does not boot anymore : here is the error message :Quote:Target filesystem doesn't have /sbin/initPrevious messages on the boot were :Quote:
kinit: name_to_dev_t(/dev/disk/by-uuid/0a301...a8 = md1(9.1)
kinit: trying to resume from /dev/disk/by-uuid/0a301...a8
kinit : No resume image, doing normal boot...
[code]....
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Jun 4, 2010
I installed a month or so ago a Samba File Server along with Active Directory integration in my company. I choose to install on my newly created raid array, all in ext3 filesystem. The purpose of this fileserver is to have lots of files from the different departments on the company (all windows workstations except mine). Everyone has a private folder and a department folder, along with the common folder for all employees.did I made a mistake formating all to ext3? would I get a significant increase in performance if I resize the current ubuntu partiton and created a new NTFS new one and move the files to it?
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Jul 1, 2011
Where I work we're trying to create a mailbox where our employees sends messages to it and the mail server processess them. Much like the Support of some companies where you send an email a ticket is automatically opened, but instead we need to save the messages to the filesystem depending upon an identified ID in the message.
We're considering two options:
1) Identify by to: header
Messages are sent to 12345@domain.com or os+12345@domain.com, where 12345 is out customer identifier, and the mail server processess messages and saves them to:
/data/os/12345/Customer contact.eml
2) Identify by subject: header
Messages are sent to os@domain.com and the customer identifier is specified in the subject [12345] Customer contact.
We need to do some other verifications as the user (from: header) is authorized to archive messages to that customer, but this is another story.
I tried searching for something along the line of AMaViS and ClamAV filters but had no success.
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Jan 18, 2009
Vsftpd virtual users, when a user connects via of ftp they can view all files in the file system. Have a virtual web server and vsftpd working, each user's username is their domain name. FTP works, but not the way I wish for it to work. I only wish for a user to be able to view the files under their username, not the entire Fedora file system and limit changes to files ONLY under their domain name.
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Feb 6, 2010
Have the following partitions, I've grown md1 from 3 drives to 4 drives with mdadm. It is now the size below of 531899712 from 354599292.
[Code].....
As you can see above however, the filesystem is not growing. What am I missing. I don't believe I need to do anything with the partitions. I should just resize my array as I have and xfs_grow and be finished.
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Sep 14, 2010
G'day. My distro is Fedora 13. I received the above subject error message at boot. My /etc/fstab is attached as follow:
#
# /etc/fstab
# Created by anaconda on Fri Mar 5 12:44:10 2010
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
[code].....
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Jul 9, 2010
I have a following problem: Recently my drive with Ubuntu 9.4 has mysteriously stopped working, i.e. when I switch the computer on it informs me that GRUB didn't find the filesystem. Well, I suppose it happens.
First, I though it was due to the drive dying, but I popped it in an external enclosure and HDTune told me the drive was fine. Wanting to recover the files on the drive before reinstalling I first tried to mount it in said external enclosure under Windows (I have Win Ext2 driver installed which used to work just fine). This time, however, drive gets assigned a letter but upon opening it Windows popped up an error saying that the drive was not formatted and whether I would like to format it then.
Unfazed by this streak of failures I tried to mount it under Linux but, alas, to no avail. I might have tried every single -t operator under mount command but it still won't budge and let me mount.
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Mar 27, 2010
When I try to boot to OpenSUSE I get the following error during boot-up: unknown filesystem type 'reiserfs' could not mount root filesystem - exiting to /bin/sh$
This only started happening quite recently - before this I could boot to Linux quite happily.
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Mar 11, 2011
I am trying to mount a file image, like this
mount -o loop /tmp/apps.img /media/apps
But I get the following:
mount: you must specify the filesystem type
I try ext3:
mount -o loop /tmp/apps.img /media/apps -t ext3
dmesg says:
error: can't find ext3 filesystem on dev loop6.
I've also tried ext2, vfat etc. How can I detect the filesystem type of apps.img?
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Mar 24, 2010
I've had a look at some similar threads but as I'm very new to linux they're already a bit technical for me. Sorry, this calls for someone with patience. I gather from other threads that disconnecting an external drive without unmounting is a no-no, and this seems to be the likely cause. Now the disk is read only and I'm unable to change any settings through the usual control panel on ubuntu. I'm just not familiar with the terminal instructions. I tried to cut and past a few command lines from other threads but I got some warnings that proceding could damage data. Like this one: WARNING! Running e2fsck on a mounted filesystem may cause SEVERE filesystem damage.
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Aug 6, 2010
When would ftp be a better choice than sftp?
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Apr 22, 2010
I've got a machine with P4 1.6GHz and 512M ram. It's a bit laggy when running ubuntu 9.10. Especially after i open up Eclipse, things start to get very slow. I'm thinking about installing Xubuntu, but am wondering if installing debian(or arch) then xfce would be equivalent to installing Xubuntu, or would it be faster when using debian(or arch)+xfce combination?
Reason why I'm thinking about this is that the Ubuntu family including Xubuntu, tendd to integrate too much stuff for ease of use, while installing system from scratch and then building up from that could avoid those unnecessary extra features. What do you guys think?
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Jul 27, 2010
I want VLC to be the default media player in my Ubuntu 10.04 installation. However, even though I right click on a media file and select it to open with VLC and ticks the "Remember this application for ..." box, files of this type still keep opening in the "Movie Player" application. It seems the "Remember this application for ..." box has no effect what-so-ever. Anyone know what might be wrong? Some configuration file somewhere that I don't have the right to or something?
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Nov 15, 2010
According to some info I've been given that helped solve a video flicker, I'm in need of a replacement graphics card for my new machine. can I have working flicker free video and CCSM effects? or is it a case of one or the other?
Quote:It is hardware dependent...in my experience it varies from card to card.Current Machine spec: Asus M4A87TD/USB3 870 Socket AM3 8 Channel Audio ATX Motherboard Corsair 4GB (2x2GB) DDR3 1333MHz Memory Kit Unbuffered CL9 AMD Athlon II X2 250 3.00GHz Socket AM3 2MB L2 Cache Retail Boxed Processor Asus GeForce G210 512MB DVI VGA HDMI Out PCI-E Low Profile Graphics Card I want to get rid of the graphics card anyway, for something passive (very annoying fan on the current one), but was planning to just get a passive g210. Does anyone have any other suggestions that might allow me to have desktop effects and reasonable flicker free video playback? similar in budget to the original would be good.
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Jan 22, 2011
When Starting Up My Computer It Automatically starts up Windows 7 Home Premium I didn't see a choice for which one to boot up with. I have it fully installed.
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May 23, 2011
How could i have the choice between KDE, Unity, and Gnome ?
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Feb 9, 2010
When im trying to open ubuntu there displaying.error : initrd is too big press any key to continue..if i press any key going back to the operating choice
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Mar 2, 2010
I am new Ubuntu. I have a new Dell Mini10 running that I have configured and running. I want to clone or backup the system at it's current state. I have been looking at the options and Clonezilla seems to be recommended often. Are there other choices that are easer or better? My real goal is to make a bootable DVD that will restore my system back to the point it was cloned.
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Mar 25, 2010
I tried searching forums before posting, but it was hard to search due to the specific nature of what I want to do.
I have one hard drive with windows XP on it. Another with Ubuntu. As it stands there is no link between them. Is it possible to create a dual boot using these disks? - I do not want to reinstall any of them.
Preferably, I would like the boot choice (or booter? - not really sure what I'm talking about) to be on the newer Ubuntu drive.
It is on an old machine with 256MB Ram. So slow in fact, I'm going to change the desktop environment to Xubuntu - but that's mostly irrelevant.
As I understand it, I should make the Ubuntu drive master, XP as slave... but then what?
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Jun 3, 2010
This morning I had 10 updates for my system including a new kernel 2.6.28-19 During install I was asked a question as to which menu.lst to use. I was completely confused as there was no documentation explaining the choices, so I took the default, keep my current menu.list. I did that because I have a modification to my menu.lst having added acpi-noirq I was afraid I would loose that and not be able to boot. Anyhow I ended up with my same menu.lst without the new kernel. So it booted the old kernel 2.6.28-18.Where is some documentation to give one some idea of which of the about 8 choices to make? I can't be the first with this problem. I have another computer to undate that has a different mod to menu list.I would like to know the correct way to choose the proper choice. If I don't get an answer I will try to document in more detail the choices.
I got around the problem by editing menu.list and copying the entries for 2.6.28-18 and changing them to 2.6.28-19 Many folks might not even realise they were running on the old kernel.
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