General :: X86 Distro Running From Solid-state Memory?
Jun 25, 2010
I'd like to build a compact x86 host running off a CompactFlash or some equivalent solid-state memory instead of from a SATA disk, to reduce the risk of failure once they're deployed at customers' premises. Those are SOHO users, so performance is not an issue, but stability is (The less I have to drive to replace faulty hardware and restore data, the better.)
Do you know if the usual suspects (Ubuntu, CentOS, Gentoo, etc.) can easily be made to run from solid-state memory, and if yes, is there some good documentation to customize them thusly?
I assume it's just a matter of tweaking /etc/fstab, but it could be more involved.
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Aug 21, 2010
I was looking into getting some solid state drives for the 1st time. I have always used Seagate traditional SATA drives for my home systems but I think I would like to try something new and that has much better performance. Do you guys know if I will see any performance gains and or issues using SSD on Linux? I run Arch and Debian Linux in general...
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May 14, 2011
What should be done to completely wipe clean a solid state drive (before selling a computer)? What should be done for a regular drive, and what considerations apply to a SSD?
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Jun 12, 2010
Had a laptop with a Hardy install - my two year old knocked it on the floor and after that it no longer recognized the drive, and I could hear the hard drive read head hit the platter when it tried to read it.
I bought a new Kingston 128GB solid state drive to replace my old 40GB drive - figure it will be more robust.
I tried installing Lucid, and it stopped after partitioning the drive and was unable to format it. I attempted to use my old Hardy install disks, and had the same issue. I spent time with Kingston tech support, they had me try a few things, then RMA'd me a new drive. New drive still had the same error.
I figured something else must've broke and let it be for a while. Today, just for the heck of it, I attempted to install XP on it. Flawless. So, it's not a hardware issue.
Any known issues with the Ubuntu installer and Laptop SATA-2 Solid State Drives? (I'll put more details in a later post if needed, don't have them at this very moment)
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May 26, 2010
I'm having a particular problem trying to partition a solid state drive on a Dell Mini 9; I'd like to install Ubuntu Netbook on the computer. The machine came with MS Windows XP on it. When I try to use the automated installer, it fails and quits at the partitioning stage. I have tried both fdisk and parted but both of these also fail and quit with errors when they try to write to the disk. I've also tried using Fedora and Knoppix to install and they both fail as well. I did check in the BIOS that the drive, supervisor and user passwords are clear.
Some technical bits that fdisk chucks out;
[ 1913.488878] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 1913:494318] ata1.00: failed command: WRITE SECTOR(S)
[ 1913:500232] ata1.00: cmd 30/00:02:3f:00:00/00:00:00:00:00/e0 tag 0 pio 1024 out
res 51/05:02:3f:00:00/00:00:00:00:00/e0 Emask 0x1 (device error)
[ 1913.511226] ata1.00: status: { DRDY ERR }
[ 1913.517018] ata1.00: error: { ABRT }
can get access to partition the drive or diagnostics to tell what is the problem with the drive?
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Jul 26, 2009
With the new Intel G2 SSDs coming out, I'm thinking about upgrading my hard drive. However, there seems to be an extra level of software support needed for SSD drives. From what I have read there can be performance degradation over time and other issues. Does anyone know how well SSD drives are supported in Linux and also if there is support for the TRIM command or if it is planned?
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Nov 16, 2010
60 gigabyte SSDs are down around US$100.
It seems like the optimal use would be as a cache for the regular hard drives in my computer. Eliminating the need for a fast hard drive, so I can just use a slow 2TB (~US$100) drive with a SSD cache.
Is there a good way to do this yet?
It seems like it would be nice to be able to exclude some files from caching, for things like bittorrent.
Reviews of some SSDs: [URL]
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Mar 19, 2010
Laptop has broken internal CDROM. I booted with floppy to get Puppy 431 installed from USB stick. Now I have USB CDROM access thru Puppy. I can mount and see the CD fine.
Is it possible to boot or install from a currently installed linux distro (Puppy)?
I have a second free partition ext2 available, sda2, and GRUB is working fine for me on boot.
(machine also doesn't have boot from USB option, yes, it's old, a project I am working on, I have Nimblex in CD now, I think it's a live cd, I would like to try a few different ones by installing to sda2 and wiping if ng.)
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Nov 9, 2010
Have just purchased a 4GB Kingston Traveler memory stick and would like to know how i can install a Linux distro "Austrumi Linux" onto the memory stick.
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Jul 2, 2009
I am writing network module (LKM). I got process information by current->pid and current->comm. But now i want current state of task. I want to know the state of running the process. I dont find any information in struct task_struct structure. how can i get the state of current running process.
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Apr 3, 2010
I'm trying to run backtrack from a usb drive on my netbook. Upon loading it, i get "Fatal server error: no screens found".
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May 10, 2011
I searched and found several solution but those are distro specific. I need to find out if distro is running in live mode (from CD, USB) instead it's installed on hdisk. The solution should be independent of distribution.
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Aug 2, 2010
As far as I know, servers are stable and don't go down easily, but every single server will eventually go down some day, either from hardware/software failure or from hacking.
But as sysadmins, our job is to keep servers running healthy as long as possible.
So I'm conducting another short survey (I might start more survey threads, and thank everyone for kindly replying my previous post):
1. Have you encountered server failures? What's the most common cause for server failure?
2. What is your most important trick in avoiding your server go down?
3. What security rules do you follow to protect your servers?
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Apr 20, 2011
I run alot of Linux running in memory. Mainly by PXE booting a kernel and the entire OS as the "initrd" file.
I have a RHEL6 image running as a VirtualBox guest and the entire OS (minimal) is contained withing 1GB of disk. I wan't to boot the entire /dev/sda1 "/" (its the only partition on the drive, no swap) as the initrd file and run everything from memory. But grub won't let me. So before I try and re-invent the wheel I thought to post here first.
Details. RHEL 6 as guest in VIrtual BOX. configured with 3Gb memory. HD is single partition and known as /dev/sda1.
at the grub console. I issue
root (hd0,0)
kernel /boot/vmlinuz-2.6.32-19.el6.x86_64 root=/dev/ram0
initrd (hd0,0)
But the grub windows just freezes. Apparently it doesn't like the fact that I've referenced the entire partition (hd0,0) as the initrd. Any thoughts? Or any better boot loader like SYSLINUX?
BTW, I am not worried about the /etc/fstab mentioning /dev/sda1 at this point, I have a fix for that already. I would like to see grub load up the partition as an initrd.
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Nov 30, 2010
I need to find the memory usage of a shared library loaded in Linux environment.
I need this information for deciding on whether to make the library part in to application or a seperate application itself.
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Jul 29, 2011
I am using RHEL6 on a server with 3 interfaces.
eth0 is connecting via a Cisco switch to the outer world and eth1 and eth2 to internal networks.
eth1 and eth2 are working without problems all the time, however I have the following incident with eth0: although it is RUNNING, and after it works for some time (like some hours), it then becomes incapable of sending/receiving traffic. Here are more details, after the interface exits the RUNNING state:
[root@mgt ~]# ifconfig eth0
eth0 Link encap:Ethernet HWaddr E4:1F:13:6C:87:74
inet addr:9.162.91.26 Bcast:9.162.91.255 Mask:255.255.255.0
inet6 addr: fe80::e61f:13ff:fe6c:8774/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
[Code]....
I am wondering whether there this is because there is not traffic for some time and so the interface goes to idle. Is there any parameter I can tweak in RHEL6 to force the interface to remain RUNNING even in the absence of traffic (although I would be expecting that some 802.1 packets would be periodically flowing from the switch to the interface)?
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Nov 2, 2010
Are there any tools to view/edit user space memory of running processes on Linux?
It would be a great learning tool.
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Jan 26, 2011
Is there a way to make the background to an editor e.g. gedit transparent without affecting text's transparency? Is there any other program that supports this?
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Jan 9, 2010
nominate a disastrous distro from past or present that was simply AWFUL and what exactly was so bad about it?
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Mar 14, 2011
Is there any easy way (i.e. command or file to view) to find out what distribution I am running? I know that my /etc/apt/sources.list has entries for stable, testing and unstable but I hear that (as of the 30th) "stable" has become Sarge. So if I performed an apt-get update then an apt-get dist-upgrade yesterday should I assume that I am now running Sarge?
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Jan 5, 2010
My laptop pc is corrupted and it wont start up Windows and my cd rom is fried it wont work. The only way to use the pc is to run slax or any distro of Linux by USB. I want to fully install Ubuntu on the laptop but the install file is .exe and wont open up with Linux. I would like to know if there is a way to download and fully install ubuntu on my pc via USB.
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Mar 24, 2011
No matter what distro I have used, when I run a live cd/usb installer... even without installing the OS or accessing the OS hard drive, Windows 7 freezes after logging in. Running this on an Asus G73-JH, I've seen similar problems from other people with Asus notebooks, but they have actually installed the linux OS. Running Windows home premium x64
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Jun 27, 2009
First off I am new to Linux and fairly new to working in Networking and Server config's. I have been using Windows for years and have been learning Windows Server 2003 as I have a Technet account, I can get any MS software. I would like to learn Linux and use this as my Server environment. My project looks like this: I have a Quad core, 8gb machine. I want to install a distro of Linux (server or desktop) and run Virtual Machines on it.
My perferred way would be to use Virtual Box but I could use VMware products if that was better. I would like to run WS2003, WS2008, Linux Distro and anything else that will run in a VM. I can figure out that part pretty easily. I want the Linux host machine to run all these VM's and access and use them on my MAC remotely. I have done some research on ESXi as well, but I don't think my Hardware is going to support that. My exact PC spec's are:
AMD x4 940
8gb DDR2
Gigabyte MA770-UD3
2 Velicoraptor Drives
GTX 260
I will be dual booting this machine on one of the Raptors for gaming as well.
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Apr 20, 2010
I am using malloc and frees a lot in my program. It shows its allocated but when i remove it doesnt show as the memory is removed(I am using the top command to view VIRT memory usage). If this continously grows what would happen to my program (Will it go out of memory?)
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Mar 18, 2011
I have a computer with 16GB of ram. At the moment, top shows all the RAM is taken, (NOT by cache), but the RAM used by the various processes is very far from 16GB.I have seen this problem several times, but I don't understand what is happening.My only remedy so far has been to reboot the machine.
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Mar 15, 2011
How good are USB memory sticks for running operating systems from, and the ones based in micro sd cards?
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Mar 3, 2009
I would like to know if there is a linux command to verify the amount of memory used by a program. The programs I am using were compiled with gfortran.
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Aug 14, 2010
Something is running my memory up and causing my load to crash my forum. I keep noticing this error and have no clue really how to go about fixing it.
Quote:
%CPU PID USER COMMAND
1.2 2978 mysql /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --log-error=/var/lib/mysql/server.forumnameremoved.com.err --pid-file=/var/lib/mysql/server.forumnameremoved.com.pid
Could this be causing my CPU to run high? How would I go about fixing an error like this or is it even doable?
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Jan 2, 2011
Before running SOSreport, the free physical memory is 5389Mb out of 8Gb.
After running SOSreport, the free physical memory is 3229Mb.
Why is this so? how we can free up the physical memory.
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Jun 28, 2013
I have a java program that runs on Debian as a background processor. Yesterday the Java program stopped running. I looked at the memory usage, the system only had 5MB memory left, so my guess is that the java program ran out of memory to use.
However, after we restarted the java program, we could see that the free memory count started to go up. It kept going up from 5MB to over 400MB. The increase of memory happened slowly, when I measured it, I could see that with each minute passing by, there were a bit more memory added into the free memory pool, and meanwhile, the java background process was running.
I wonder why this would ever happen. It's as if our java program first brought the machine done because it consumed all the memories, then after restart, it starts to give back memories.
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