I install centos 5.4 on my intel S5000vsa motherboard, and with embeded RAID1. I successfully config RAID1 in BIOS, and then I set to install centos use linux dd mode. And also successfully loaded raid drivers. In centos partition step, one disk appears. However, when centos installed and entered the system, strange result in fdisk -l.
fdisk -l
/dev/sda
...
/dev/sdb
...
Is it normal?
Iīm pretty new to linux and debian and I have a problem with my disk setup. I have a rocketRAID hardware card installed for RAID setup. In addition I have a separate HDD for linux and use the RAID-setup for server purposes. Now, when I boot the system, grub boots /dev/sda1. This does not work and I have to change to /dev/sdb1 for it to find the system files. (although sometimes it works, but in these cases the system does not find the RAID-disks. Thatīs for another time thou).
The strange thing about this, to me in any case, is that "fdisk" reports correctly, with sda and sdb but "df" reports all disks as sda and none as sdb. It also misses a partition of the RAID-disks which fdisk reports. hereīs a screengrab from "fdisk -l" and "df -h"
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My system decided to crash on me, hard. It was humming along happily for about 2 months and now doesn't boot. If I boot from hard-disk, I get grub. Launching the first kernel choice hangs. I thought maybe the install was corrupt, so I booted from usb install disk. The usb hdd didn't boot; something about an error trying to access /dev/sda . Unplugging the internal disk and plugging in the usb install disk does result in the system booting. Plugging in the internal disk in a running system usb-booted system does not result in the system detecting the disk.
How do I know if the disk is physically broken? This seems unlikely since it does manage to launch grub consistently. Or is this still possible? How can I try to mount whatever is left? The usb install disk doesn't even list the /dev/sd*. Any pointers on how to reformat the drive if it's not being mounted?
within the last 24 hours I have lost a reiser formatted disk. It is not visible not with df or fdisk.Which tools do you normally use in a situation like that.
Disk /dev/sda: 40.0 Gb, 40020664320 byte
255 heads, 63 sectors/track, 4865 cylinders
Units = cylindre of 16065 * 512 = 8225280 bytes
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I have used fdisk to create two new partition.
Before this partition, I had 6 partition of which /dev/sda6 was the boot partition. I deleted /dev/sda5 partition and hence the earleir /dev/sda6 became /dev/sda5. Now I created two new partitions /dev/sda6 and /dev/sda7.
Due to this change in device label of /dev/sda6 I am not able to boot my computer.
Is there any method to change the disk label of /dev/sda5 to /dev/sda6 ?????
Ubuntu 10.04 - Firefox 3.6.8 I have all the packages installed that I need because every other video I try plays fine. The one that won't work for me is on a friends site - I'm pretty sure it's embeded ( whatever that means ). When I try to play it, I get audio, but no video. If I click where it says Vimeo on the lower right side it plays from there. I do know that it plays "as is" in Windows. Just wondering what's going on. Here it is to take a look at - [URL]
View 7 Replies View RelatedWith Ubuntu 10.10 server installed on an
- AMD Athlon II X2 235E CPU AM3
- 2GB DDR3
Installed on a software raid 1 of 16 GB usb sticks that can sustain 24MB/s read and 13MB/s write rates
running
- ssh
- zfs-fuse installed from apt
- samba
With the zfs using the sata II controller, with a 2TB, 1.5TB and 500GB in a raidz1 (I know, it's uneven, I'll be changing them all to 2TB once I get the data off those drives).
However I'm experiencing a REALLY REALLY exceptionally slow zfs performance of only 600KB/s transfer rate even when using the command:
To test. CPU usage is only at 25% (with dedup=on) however I notice that the usb sticks are regularly transferring data during this write to the zfs pool. Also when doing a zpool scrub it completes 9.6GB of scrubbing in well under 2 minutes. Admittedly it shouldn't actually be doing much as no data was changed by me while the 3rd drive was unavailable.
I'm thinking that there is some data being temporarily saved to the main system drive (usb sticks) and then transferred to the pool, and this is causing a bottle neck. Note both 16gb usb sticks are plugged in to the same usb 2 host controller, but the combined write bandwidth of those sticks is not enough to saturate a usb2 bus.
How to track down this bottle neck?
I face "read error " while booting. sometimes it start normally. someone told me to check hard disk for errors. i used gsmartcontrol for this. but from its result i am unable to decide is this hard disk failure or just minor errors. can somebody tell me do i require to change my hd or it just something else to cause such error.
View 5 Replies View Relatedi had installed fedora 14 into my new hardisk(1500gb) as new server the problem is how can i use the fdisk to partition the hardisk into two partition.
View 10 Replies View RelatedI recently expanded the RAID on an iSCSI device which is shared out to a linux server. Fdisk correctly sees the new size but it won't let me add a third partition. It complains about overlapping partitions whenever I try to add it.If I 'remove' the partition, the overlapping error goes away. The interesting thing here is that when attempting to use the default sizes to setup the partition the printed screen shows completely different results (which I can understand is why its complaining about overlapping)
I'm not sure why its not accepting the cylinder sizes I want. Anyone have any ideas as to what's wrong here?
I have set up a server box running Ubuntu 10.04 Server 64-bit with Squeezeboxserver, ftp, apache and all the things that I need.I am running it on a Asus P5Q pro with 9 harddrives attached.I have set up 6 1tb disks that run a raid6 array but I am wondering what would happen if the motherboard would fail me.Is it possible to just replace the motherboard with a newer one and would then the raid6 array still be intact?
I used to run a raid10 with the 6 disks on a Windows 7 machine with a software raid card but the card broke and I replaced it with a new one but the array could would not work so I had to forget all my data and this is what brought me to using a Ubuntu server as OS and running the raid array on the motherboard sata instead.Also, is it possible to make an exact copy of the boot drive/partition and easily replace that is the boot hard drive would go faulty? I have heard about the dd command and I feel it would be nice to know that I'm not totally screwed if the boot drive fails.
I have a dumb question but the google can't seem to answer it. When (if?) my host locks up (RHEL 5.4) I generally don't get anything in /var/crash . kdump is configured correctly and works (if tested using ` echo "c" > /proc/sysrq-trigger` as per Red Hat's KBase article) but in the real world, when the system locks up nothing ever ends up there.
So, on to the dump ( ) question - I have to crash it using Ctrl + SysRq in order to get anything out of this, right. If the box is comatose and doesn't respond at all to the point of being power cycled, it's all gone isn't it? Volatile memory being what it is and all; or is there some sort of magic / voodoo in place that makes it survive the reboot. And no, my Dell PowerEdge 1950 doesn't have battery backed RAM, so i'm quite sure that unless i can kill it through sysrq ...
When I check socket on my box (Centos 5.5) I notice a strange behavior:
fuser 80/tcp
fuser -4 80/tcp
fuser -6 80/tcp
don't give me any result. But apache is running!
tcp 0 0 :::80 :::* LISTEN 25960/httpd
I created a new disk on our scsi san. I then ran the following command: echo "- - -" > /sys/class/scsi_host/host1/scan. did that command for each host. and in dmesg, it shows it found a device /dev/sdg. but when i do a fdisk -l. It never lists /dev/sdg. I just did this other day on another server and it worked fine like that. This is RH 4.8.
View 7 Replies View RelatedI am wanting to create the smallest server I can possible. I have a small server I use as a print server and for file sharing. The hard drive is about 80GB. Since I only run cups and samba, I see no reason to take up an addition few GBs with major distros just to run the OS. I know it is possible to get a small distro around 50MB or so. I would even be happy with an OS running around 200MB. what would be the best way to go about doing this? LFS is just too complicated and time consuming for the end result. Would something like Gentoo be better? Anything else that I may not know about?
View 11 Replies View RelatedHow to device-mapper multipathing in conjunction with fdisk. I am more of a solaris expert and now trying to grasp linux (red hat). I have a server that I plan to cluster (future assignment) which is attached to a Netapp SAN via emulex LPe11002 HBA. I have 8 paths to the LUN I created and I can see the multipath device (/dev/mapper/mpath1). Below is my multipath.conf file:
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Question 1: When I look at fdisk -l, I can see all 8 paths to the same LUN. Although I partition /dev/mapper/mpath1, I can still see that 7 of the 8 still say "Disk /dev/sdX doesn't contain a valid partition table". I would think that all 8 would have this removed. I execute '/usr/sbin/lpfc/lun_scan all' and it doesn't work. I am looking to clean this up...what should I do? It seems weird to have to do it to all 8 paths!
Question 2: Why does my alias, 'db' not show up under /dev/mappers?
Question 3: Is there a way for fdisk -l to display one lun rather than displaying all 8 paths to the lun?
What is the standard procedure (commands) people execute when adding a new lun to a server with multipathing so it is nice and clean?
It's been a while since I configured a raid and have been making some changes to my main workstation/server.
fdisk does not like md devices on my machine... always says it has an invalid partition table. While this is said to be normal all over the net, I don't feel warm and fuzzy about that fact. What is best practice these days, to create a non-partitionable md device or a partitionable mdp device?
If I create a partitionable md device, I would imagine it would look good in fdisk. However, I am concerned about growing the array afterward. I would then have to grow the array, redefine the partition, and then grow the file system. The PITA factor goes up. Has anyone worked with both? Pro/Cons? My array was created with:
mdadm --create --verbose /dev/md0 --level=5 --force --raid-devices=3 /dev/sda1 /dev/sdb1 /dev/sdc1
FYI: I have backups. I understand RAID 1 may be a better choice of raid level.
I have run into a problem with eSATA that so far I have been unable to find a solution to it on any of the Ubuntu or Intel forums. My set up is as below:
OS: Ubuntu 10.04.01 LTS Server (base install)
Motherboard: DP55KG
BIOS: ver. KGIBX10J.86A..5893.2010.1116.0001
Marvell Controller: 88SE6145, BIOS 1.2.0.31
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My understanding is that Ubuntu is suppose to detect the eSATA drive without any extra drivers, my experience is it does not - I am missing something or is anyone else having/had this problem and been able to get eSATA to work?
page [URL] but I don't believe this applies to Ubuntu.
I'm building my first server to use as a Counter Strike: Source game server that I'm hoping will host 24-48 players. I plan on using Ubuntu Server 10.04 64bit. I also plan on using it as my own personal file server. I'm looking at building it with the Intel Xeon E3110 3.0GHz, 1333MHz, Wolfdale, dual-core processor (LGA 775) as it's cheap and from what I've read, should fit my needs.
Initially I want to build the server with a single SSD drive just to get the system up and running and then later I wanna add another SSD to mirror the original with RAID 1. Then I want to add 4 large capacity SATA drives in a RAID 10 for storage (after I've gotten everything else set up).
Can anyone recommend a motherboard that will fit this setup? I'd really like a motherboard that has built in VGA graphics so I don't have to buy a graphics card just for the install (as I plan on using SSH after I get it up and running). I don't plan on using ECC memory as I need the memory to be fast (for the game server). Because this is my first build, I'm very new to installing/setting up RAID. Do any motherboards exist that have a built-in hardware RAID that will work with Ubuntu and let me do raid 1 and raid 10? Or will I have to get a SATA RAID card? Will hardware based RAID allow me to build a raid 1 array with a SSD drive that's already in use (my system drive) without having to reformat/re-partition?
I have an IBM xSeries server with a 120gb IDE hd. I would like to use it for mail and web server at work. Obviously, I need a bigger HD. The only thing is I can't find a big (1TB) IDE HD all I can find are SATAs and this server's motherboard does not support SATA drives.
View 3 Replies View RelatedCan SATA 3 (SATA III) Hard disk be run on motherboard which only supports SATA II, except sacrificing the speed (throughput)?
View 2 Replies View RelatedI recently set up a Samba Server on a new Gigabyte (Desktop) Motherboard with support for SATA 3.0. I used a new 1T SATA 3.0 (6Gb) Hard Drive. The system is performing poorly, seems to have problems both opening and closing files (*.dbf).
Also will hold a file as open periodically (may be a Samba Issue).
Does the O/S have to support this standard, or is it a function of the Hardware...?
I recently noticed that I'm having bizarre results with my internet connection, specifically pertaining to APT. When I "sudo apt-get update" This is the result I get with ANY SERVER SELECTED. I tried the fastest server, one closer to me, a random one and the main server, they all yield the same result
Code:
Hit http://packages.medibuntu.org karmic Release.gpg
Ign http://packages.medibuntu.org karmic/free Translation-en_US
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I am having problem with the root disk / fill up. So now that i have the disk information provided from SAN team Id 0:3, how would i do to add this device to / to increase space on Redhat Enterprise server 4?
View 1 Replies View RelatedCopy of IBM Server hard disk data to Another USB External Hard disk?
View 2 Replies View RelatedI have some servers running rhel5,they are in mirror disk 2 disk there is no any hardware RAID only software RAID and they in remote place.
Assume RHEL5 hda(Disk1) & hdb(Disk2) currently in mirror, i have to install some patches in it. Before that i have to break the mirror and boot from hdb if it is successful. then i have to apply the patches to hda.
After that i have to boot from hda and check whether the latest patches updated and working fine. finally i have put them in mirror. the same scenario for solaris.
I want to setup a Linux File Server for a small windows network (around 50 users). I do know that I am gona need Smb service/pkg for that. I haven't used Samba for a while now and as per the best of my knowledge, entire communication (including usernames and passwords) between a samba server & windows client machines will be plain text. Is there any way to secure all this communication??
Secondly, if i remember correctly, MS windows wont let me mount more than one samba shares as network disk when all my shares can be accessed by different smb users with different passwords?? is there a solution to this problem? OR may be if there is any other package available for this purpose so that i wont have to use samba?
pls suggest me how to mirroring two hard disk drive in rhel9 server.i can do raid on those hard drive but user requer mirroring.so pls help how could i do this, mirror two hard drive.
View 2 Replies View RelatedI got this type of messages:k journald starting. commit interval 5 seconds.EXT3.fs:mounted file system with ordered data modefreeing unused kernel memory : 212 k freed.Warning:unable to open an initial consoleAfter this Server is not hang state but stay at same Anybody can help me how to resloved this type of issue.
View 1 Replies View RelatedI am in need of the instructions of how to create a boot disk for my RED HAT Linux Enterprise Server. I have a floppy drive also it this helps.
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