I have two SATA disks, 80G and 1T. Using "df" command we can see the all partitions:
/dev/sda3 6.7G 2.5G 3.9G 40% /
tmpfs 1.7G 0 1.7G 0% /lib/init/rw
udev 1.7G 220K 1.7G 1% /dev
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I have servers which contain SATA disks and SAS disks. I was testing the speed of writing on these servers and I recognized that SAS 10.000 disks much more slowly than the SATA 7200. What do you think about this slowness? What are the reasons of this slowness?
I am giving the below rates (values) which I took from my test (from my comparisons between SAS 10.000 and SATA 7200);
dd if=/dev/zero of=bigfile.txt bs=1024 count=1000000 when this comment was run in SAS disk server, I took this output(10.000 rpm)
(a new server,2 CPU 8 core and 8 gb ram)
1000000+0 records in
1000000+0 records out
1024000000 bytes (1.0 GB) copied, 12.9662 s, 79.0 MB/s (I have not used this server yet) (hw raid1)
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Can 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 have installed ubuntu version 9 and i cant seem to find where hard disk partitions are,what do i do?also what do i do to install the webcam and to change from gnome to Kde enviroment!!i also installed virtualbox but i seem not to find the icon
View 3 Replies View RelatedI've had installed my new Ubuntu onto my 500 GB Seagate.Before I done any of that, my old Ubuntu I installed was installed into my laptop hard drive. It stopped working cause it couldn'tfind /ubuntu/disks/root.disk something like that.I'm right now using Ubuntu, and I was wondering if anyone knew how to mount my sdb5...
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Device Boot Start End Blocks Id System
/dev/sdb1 1 60242 483890176 83 Linux
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I'm using Ubuntu 9.10 and previously had a separate partition with another distro on it. I decided to delete the other distro's home and swap partitions and install XP in place of it. I've been following these instructions: [URL] and [URL] I have gotten to the point where I am booting to the XP CD and want to install it, but I get the message, "Setup did not find any hard disks installed on your computer" when I should be getting to the screen that asks me to select a partition to install XP on. This is what my HDD looks like in GParted:
I want to install XP in the unallocated partition, but I have a feeling I screwed up somewhere along the way and probably don't fully understand the whole thing. Even if I try to format the unallocated partition to NTFS I can't make it a primary partition (I assume because it's within sda2). The very last thing I want to do is delete my Ubuntu partition and start from scratch, but if that's my last option let me know.
i installed latest ubuntu server 9.10 on my mini itx board which i have 1 4gb IDE disk and 4x2TB sata disks attached no i want those disks to automount on startup is there a way without modifiying fstab? the thing is, i want to expand the storage over time (next hard disks in a few months) and maybe a second mainboard in a year so i need a simple way to mount everything without being to mainboard specific like doing fstab entries
View 2 Replies View RelatedI try to install ubuntu 10.04.1 on my pc but i fails at the very beginning because of HDD problem. I get messages such as :
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used to run ARC linux and Windows 7 on my computer and i am now trying to install Ubuntu 10.10 X86_64When i used the live disc of Ubuntu 10.04 and load the installer it finds my four harddrive they way it should... sda,sdb,sdc,and sdd...When i however try the same with ubuntu 10.10 it displays my usb cardreaders drives first and then my hardrives as sde sdf sdg and sdh.I tried installing ubuntu with the reader unplugged and then reconnecting it after installation...But when i then boot with the reader attached it says it cannot mount drives sda,sdb,sdc and sdd becuase they are not ready.I think it is again detecting the usb cardreader before the sata controller ...Is there a way for me to alter the boot detection order so it will find my harddrives first and then the usb cardreaders ports ?
View 1 Replies View RelatedHow to configure the master and slave on 5 Sata disks? Is there that or it is automatic.I install Debian, ok, master boot ok, on the first sataAnd at reboot, just after install, the boot hangs and no grub appears.
View 3 Replies View RelatedI've just removed fedora 10 and installed CentOS 5.4 both x86_56 on my Lenovo ThinkCentre 9091-CTO workstation, and observed serious performance degradation while intensive I/O operations and huge load without significant CPU consumption in user mode with about 50% in I/o wait.For example if I do the "tar xjvf some_large_tar.bz" file and run vmstat i get the output below. This is the only cpu and io intensive process running. The load gets up to 6 on C2D CPU and the machine has unacceptable responsivness.
[root@f00 ~]# vmstat 5 10
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------
r b swpd free buff cache si so bi bo in cs us sy id wa st
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I have Fedora 13 installed in a new computer, and form some weird reason, udev is skipping three of my HDs. Looging the output for udev --triger, the entries for the HDs are skipped
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[root@storage ~]# lspci
00:00.0 Host bridge: ATI Technologies Inc RD780 Northbridge only dual slot PCI-e_GFX and HT1 K8 part
00:02.0 PCI bridge: ATI Technologies Inc RD790 PCI to PCI bridge (external gfx0 port A)
00:06.0 PCI bridge: ATI Technologies Inc RD790 PCI to PCI bridge (PCI express gpp port C)
00:07.0 PCI bridge: ATI Technologies Inc RD790 PCI to PCI bridge (PCI express gpp port D)
00:0a.0 PCI bridge: ATI Technologies Inc RD790 PCI to PCI bridge (PCI express gpp port F) .....
Trying to install SUSE on a perfectly working PC that was running Windows. Blew away all the partitions and formated the drives.When trying to install SUSE, Installer will not detect my two hard disks. Tried with version 10.x, 11.1 and 11.2, without success.My Mobo is a XFX GeForce 8209, and my SATA drives are both Seagates (1x120GB, 1x320GB). I've tried different SATA mode selection (i.e. SATA, AHCI, and RAID) without any success either.I've tried to look for SATA controller drivers for my Mobo, to try to load on Installer startup, but failed there too.
View 1 Replies View RelatedI have a Dell Studio XPS running openSUSE 11.2 with dual mirrored disks (using Dell's SATA controller). Does anyone know how I can set up automatic monitoring of the disks so that I will be informed if either fail? I think smartd might be what I need here. Is that correct? I added:
/dev/sda -a -d sat -m <my email>
/dev/sda -a -d sat -m <my email>
smartd is running, but how do I know that it will report what I need? I also have a client with a Dell PowderEdge SC440 with SAS 5/iR also running openSUSE 11.2. They also require automatic monitoring. There doesn't seem to be a SAS directive for smartd. I notice that the newer release says it does support SAS disk. I upgraded to 5.39. On restart (with DEVICESCAN as the directive) I get the following in /var/log/messages for my SAS RAID disk.
Sep 18 10:47:26 harmony-server smartd[25234]: Device: /dev/sdb, Bad IEC (SMART) mode page, err=4, skip device
I ran:
smartctl -a /dev/sdb
and got the result:
smartctl 5.39.1 2010-01-28 r3054 [x86_64-unknown-linux-gnu] (openSUSE RPM)
Copyright (C) 2002-10 by Bruce Allen, smartmontools
Device: Dell VIRTUAL DISK Version: 1028
Device type: disk
Local Time is: Sat Sep 18 11:32:08 2010 JST
Device does not support SMART
Error Counter logging not supported
Device does not support Self Test logging
Is there some other tool/package that does support DELL virtual disks?
i currently try to mount 4 internal sata disks using hal on a server installation?
i did
apt-get install hal and copied a .fdi script to /usr/share/hal/fdi/policy/10osvendor/30-storage-all.fdi
as far is i understand now i need a hal/dbus client
gnome-volumen-manager seems to be one
apt-get install gnome-volume-manager
now im stuck there is no such executable like gnome-volumen-manager thus, how does it work? how can i start it? how do i know if and why the .fdi script works or fails?
since its a server edition and its purpose should be a very minimized server install i dont want a GUI like gnome fully installed
I upgraded F14 to F15; However, F15 no longer recognizes my 3 sata disks connected through Marvell controller. The controller is an integrated Marvell chipset 88SE6480. The controller has its own manufacturer driver but it was intended for RHEL 5.4 (mv64xx) and installation of this driver fails to generate mv64xx driver.
View 3 Replies View RelatedI just installed debian 6 on PATA 80 Gb and it recognizes disk not as /dev/hda(as it was on previous system) but as /dev/sda. I also have SATA 250 Gb disk, which is partitioned(9 parts) but new system recognizes it as /dev/sdb and there is no /dev/sdb1,...,/dev/sdb9 partitions. After doing
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#partprobe /dev/sdb
#ls /dev/sdb*
/dev/sdb /dev/sdb1 /dev/sdb2/dev/sdb3 /dev/sdb5 /dev/sdb6 /dev/sdb7 /dev/sdb8 /dev/sdb9
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Brand new HP Compaq Presario CQ56, want to dual-boot 7 & Ubuntu. Too many partitions I think:
HD0 - 298.09 GB
System
199 MB NTFS
C:
279.36 GB NTFS
RECOVERY D:
18.43 GB NTFS
HP TOOLS
103 MB FAT32
Want to add Ubuntu + Swap in the 90 or so GB range, fairly new to partitioning. Trying to create recovery disks using system tools is over 16 Gb, for that kind of expense I may as well just order recovery disks OEM if (When) Windows falls apart.
I've a clean installation of Ubuntu 11.04 (AMD64) and i'm having problems with automount ntfs partitions/disks.
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I use slackware 13.1 and I want to create a RAID level 5 with 3 disks. Should I use entire device or a partition? What the advantages and disadvantages of each case? If a use the entire device, should I create any partition on it or leave all space as free?
View 4 Replies View RelatedI have three sata drives installed in my machine. 1 is my boot drive, contains a windows install, and a linux install. All is well here. Drives 2 and 3 are simple fat32 volumes, I store my data on drive 2, and periodically sync it to drive 3. I do this simply for backup reasons. It was only recently that I setup this scheme. Previously I had all 3 drives in a fakeraid setup. Raid 5. I broke the array to set things up as I've described. All is well in windows, all 3 drives work as expected. However, in linux (fedora 12), drive 2 shows no partitions! If I do an fdisk -l, it shows sdb1, but if I attempt to mount it, I'm told that /dev/sdb1 does not exist, and in fact, /dev/sdb1 does NOT exist. sdc1 however, does exist, and is mountable.
A few things I've noticed with seem relevant.
Gnome reports a raid5 drive, which if I try to interact with it, fails.
Gparted shows sdb as a standard drive.
Dmesg shows the following, I've grepped out sdb and sdc for comparison, as they should be identical.
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[root@azure ~]# dmesg | egrep 'sdb|sdc'
sd 2:0:0:0: [sdb] 1250263728 512-byte logical blocks: (640 GB/596 GiB)
sd 2:0:0:0: [sdb] Write Protect is off
sd 2:0:0:0: [sdb] Mode Sense: 00 3a 00 00
sd 2:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA ....
Seems to me that the lines:
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raid5: device sdb operational as raid disk 1
disk 1, o:1, dev:sdb
have something to do with it.
I did play around with mdraid while my array was apart, but I cant seem to find any method of testing sdb to see if something is somehow still configured on that drive. I've re-written the partition table, and even performed a low-level format on the drive, nothing seems to restore its function in linux.
I installed Fedora on a VMWare, hosting OS is Windows 7
How can I access Disks and NTFS Partitions on the Host OS "Windows 7"
From Fedora?
I have got 2 disks available and would like to create 3 main partitions: one for file system (maverick), one for home folder and one for linux swap.
I read many howtos and now I feel more confused!
I would like to obtain the more efficient solution in order of speed (performance): as far as I can understand (not so far) .. it seems that the best choice is:
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disk 1: [beginning] ubuntu | home | others [end]
disk 2: [beginning] swap | others [end]
My situation now is, according to guides I read before:
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disk 1: [beginning] ubuntu | others [end]
disk 2: [beginning] home | others | swap [end]
now .. before moving all my staff ..
I thought to have understood that ubuntu use swap only for hibernation / suspend activities, and therefore it's recommendable to put the system at the beginning of one disk, and the home folder at the beginning of a second disk in order to have quickly two disk reading / writing on the right position without moving too much and spend time.
But now I'm confused because it seems that ubuntu DOES use swap for normal activity (and so it's better to put it) at the beginning of a second disk.
I always saw my swap next to zero during my activities .. is ubuntu using swap like windows with pagefile.sys?
Is there a way to auto mount partitions or SATA HDDs on startup, using 10.10?
I have no problems reading the drives.
I'm trying to install Ubuntu 10.10 in a desktop computer with three disks. SDA with NTFS in SDA1, where I have Windows XP, SDB where I had Ubuntu 10.04, and SDC where I have an NTFS partition. I want to install Ubuntu 10.10 in SDB without loosing the data in SDA and SDC. When I try to install it, when I choose specify manual partition, I only find this: Where is SDB abd SDC? What do I choose in Device for Boot Loader Installation?
View 2 Replies View RelatedThis is the third 9.10 install to do this on two different laptops, so wondering what's up...
In both cases, the goal was to leave a large chunk of unpartitioned disk after the Ubuntu partitions, for a second OS install or a filesystem Ubuntu cannot create like NTFS.
When I install with manual partitions, the system can't boot and asks for me to insert a system disk and press any key. When I reinstall telling Ubuntu to "use the entire disk" it then works.
First laptop, first try:
Remainder of the 500GB disk is free space.
Fails to boot, "insert system disk".
First laptop, second try without the /boot partition:
Remainder of the 500GB disk is free space.
Fails to boot, "insert system disk".
"use entire disk" works perfectly.
Second laptop, first try:
Same thing, non-system disk or disk error, insert system disk.
Second try "use entire disk" is currently in progress but I expect the same to happen.
By fiat I must distribute my homedirs across multiple physical disks/partitions. Unfortunately this is not open to discussion so obvious solutions like a lvm home partition are not available to me. The issue: Users created with homedirs on the main home partition (the one created as home during the f13 install) behave as expected, but if I create them on a different partition (home9 for the sake of this example) the users are not able to login (dropped back to login screen), nor run x-apps if su -'d to in a konsole.
If I 'su - <user-on-home9>' in a konsole, I get delivered to the /home9/<user-on-home9> as expected, but x-apps fail with the error: 'cannot open display: :0'. This can be temporarily fixed with the command 'xhost +SI:localhost:<user-on-home9>', but I would rather fix it permanently at the source.
This appears to be an selinux problem from the following.The contexts of the the two rootdirs are the same
% ls -Zd /home /home9
drwxr-xr-x. root root system_u:object_r:home_root_t:s0 /home
drwxr-xr-x. root root system_u:object_r:home_root_t:s0 /home9
but when I create the users (using useradd or the gui) their respective contexts differ:
% ls -Zd /home/user5 /home9/user6
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So, my questions for you selinux experts are 1) is it possible to have homedirs spread across multiple partitions with selinux, and if so, how, 2) Why, even when I manually set the dir/file contexts to match a properly functioning user5 from /home, do users from /home9 still not work (as far as login and x-apps).
I'm trying to install Fedora 13 on my HP dv6 laptop and when I try to use the Use Free Space installation type, I receive a Partitioning Error: Could not allocate requested partitions - not enough free space on disks. Before I started the install, I used the Disk Management utility in Windows 7 to shrink the volume of the C: drive down to 242 GB and leaving 210 GB Unallocated. Here is what the screen looks like when I select Create Custom Layout (also receive the not enough free space error):
Device (sda) Size Type
sda1 199 ntfs
sda2 248,018 ntfs
Free 215,175
sda3 13,443 ntfs
sda4 103 vfat
I have Dell Laptop 1545 which already installed windows 7 home premium which is also having two partitions one is reserved by the oem and another is for recovery partition and another 200gb i am using for windows 7 now i have left only 80gb hard disk. So I started to install the Fedora 12 in my laptop every thing is going fine but
at the time of creating the partitions iam unable to allocate the partitions the left 80gb i tried to select and tried for custom partition but to my surprise it is giving the following message "Could not allocate requested partitions: not enough free space on disks"
Have a problem here with 1Tb SATA disk. Disk is visible during boot (dmesg below), all modules are loaded after (make menuconfig + select <M> + make modules + make modules install + modprobe)
fdisk -l can not see any /dev/sd...
modules are not in use
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dmesg:
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