i have harddrive on which raid 5 is configure and no file system is configured.so i want to access the data on auto raid component harddisk.could any one telme how to access auto raid component hard drive.when im connectingto my laptop its not opening.when i check in disk analyzer its showing auto raid component harddrive.please helpme to access data inside the raid drive.
View 2 RepliesI experienced a full hard drive yesterday due to a massive error_log. We took care of the errors, but later found out we were missing files, including a MySQL database table. Having a shopping cart and ecommerce stuff on the site, we found that some of those files were missing, too.Does RHEL 5 have some sort of feature for automatically deleting files when the partition is full? If it does, I want to turn it off.
View 4 Replies View RelatedMy servers (10.10) motherboard has failed so to access my data I've taken the hard drive out and tried to connect to it via my ubuntu desktop (10.10). I've tried it in a hard drive caddy and installed in my pc, but could only see a 255Mb Filesystem with a few folders and files on it. how to mount the portion of the disk that I can't see? Ie. the part with all of the data on it.
View 7 Replies View RelatedI had a RAID1 array with two disks. I wanted to remove one of the disk and replace it by a new one. I first expanded the array from 2 to 3 components and let RAID rebuild completely. When this was done I used Gnome disk utility (palimpsest) to remove the component on the disk I want to get rid of. It looks like palimpsest did mess up somewhere because the array is no displaying as degraded. How can I get rid of the "removed" entry (was /dev/sdc1) in the RAID array (and hopefully have it come in Running state)?
#/sbin/mdadm --detail
Raid Level : raid1
Array Size : 732570841 (698.63 GiB 750.15 GB)
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Ubuntu does not see any hardware RAIDs on this server - Intel confirms that they do not support Debian distros with this onboard SATA controller.
Tried going with CentOS and OpenSUSE ... CentOS would install, but wouldn't boot. OpenSUSE would work but after multiple installs, Samba wouldn't start.
That left us with Ubuntu Server.
While Ubuntu Server can't see a hardware raid, it can see each of the hard drives individually. From there, I created a software RAID during Ubuntu setup and was able to install.
Initially had some issues with mdadm "losing" the hot-spare ... was able to fix that by adding sd[abc][12] to /etc/mdadm/mdadm.conf ...
It worked fine until I plugged a WD MyBook usb hard drive into the machine.
I lose the hot spare (configured on /dev/sdc) because it mounts the USB hard drive there.
I need to be able to make it mount the USB hard drive AFTER mdadm configures /dev/sdc as the 3rd Hitachi hard drive
What needs to be done to make this work?
Could any RAID gurus kindly assist me on the following RAID-5 issue?I have an mdadm-created RAID5 array consisting of 4 discs. One of the discs was dropping out, so I decided to replace it. Somehow, this went terribly wrong and I succeeded in marking two of the drives as faulty, and the re-adding them as spare.
Now the array is (logically) no longer able to start:
mdadm: Not enough devices to start the array.Degraded and can't create RAID ,auto stop RAID [md1]
I was able to examine the disks though:
Code:
root@127.0.0.1:/etc# mdadm --examine /dev/sdb2
/dev/sdb2:
Magic : a92b4efc
Version : 00.90.00
code....
Code:
mdadm --create --assume-clean --level=5 --raid-devices=4 /dev/sda2 /dev/sdb2 /dev/sdc2 /dev/sdd2
As I don't want to ruin the maybe small chance I have left to rescue my data, I would like to hear the input of this wise community.
How long does hardware Raid card (raid 1, 2 drives)take to mirror a 1 TB drive (500gb used)?Is there a general rule of thumb for this?4 hours? 12 hours? 24 hours?
View 1 Replies View RelatedSomeone explain this to me. I often thought in the back of my head, how do I check if my drive is bad in Linux? I always excused it thinking well I guess besides gaming that's another reason to keep a windows partition around. I boot up yesterday and Gnome was acting weird. Then, it happened. "We have detected bad sectors in your hard drive." I thought, no, you're stupid, this hard drive is less than a year old (however it was a replacement for another one that died). So I reboot.
Boot back up - Different error message. But instead of getting it a few minutes after log in, I got it right away. "We have detected potential hard drive failure." Okay, Linux. Want to play this game? Booted to Vista, downloaded Seatools to test my Seagate drive. It failed... Swapped SATA cables... it failed... So I ask - how does Linux have this auto detect capability like that? As much as I love Ubuntu, I was like there's no way it could just magically tell like that without running the Seagate program. But alas, Ubuntu was dead on target.
After keeping my old (laptop) computer going for 8 years, I've finally taken the splash and ordered myself a new PC, well the compoents any way to build myself a desktop this time.
I've just got a couple of questions.
I've got a 60GB SDD and a 1TB HDD. On the SDD I was planning on partitions for Ubuntu Swap Window partition, to run a Virtulisation, not dual boot.
Performance wise, is it best to install / on the SDD and /home on the HDD or /home on the SDD as well and just move music and videos ect to the HDD.
Just to complicate things, when ordering the HDD there was an offer to get a second 1TB HDD for an extra 11, so now I have 2. I was planning to set these up as RAID 1, which I believe I can do via the alternative install.
What would be the best way to then backup / . I guess it must be possible to schedule an image of/ to be copied across to HDD is it?
I did hear that RAID was a bit iffy in ubuntu, but looking about on the net things seem to be better 9.10 → Also the boot disk isn't RAID.
Are there any RAID or SSD issues I should be aware of?
I am on Ubuntu 10.10.I installed it on a 500 gig hard drive.In the future i want to software RAID(I did it in the past using the alternate version of ubuntu from the installation process), is it possible to add the new hard drive later and RAID later or i need to reformat?I am talking about software RAID.
View 2 Replies View RelatedSubject: grub no auto update new hard drive.doc Date: 07/26/2010 03:48:45 PM grub no auto update new hard drive.When installed 11.2 on Western Digital VelociRaptor 150 GB hard drive and now installed 300 GB VelociRaptor drive. Your grub does not update correctly to identity the op systems after the new drive is imaged; youre kidding right? I request that you provide the instruction for correcting this; you must have and auto update for grub.
[Code]...
Easiest way to auto mount an ext4 partition on my hard drive?
View 3 Replies View RelatedJust installed Slackware 13 this morning. It's been a long time since I last tried Linux, but Slack works (a lot easier than Slack 8 did back when I last used it!) quite well. I'm using the XFCE desktop and it's smooth as silk except for one odd problem-I cannot get any of my USB drives to mount. I just plugged in my Lexar 4GB USB flash drive and received an error message. Here's from /var/log/messages from when I initally plugged in the drive (I have a 500GB WD MyBook USB external drive that is always plugged in):
Any ideas or suggestions of what to look at? I'm not familiar with HAL in Linux although I've seen plenty of discussion about it and have an idea of what it's supposed to (or break! ).
In my system i have 3 250 GB Hard drives in a RAID 5 configuration. unfortunately, i cannot see this volume in "Computer", so i am unable to access any of the files on the volume. wierd thing is that when i enter disk utility, it finds the drives, and recognises them as a RAID volume. any ideas on how i can access the files on this drive
View 3 Replies View RelatedInstalled 2nd hard drive, both drives non raid. Computer recognizes it but unable to boot. Is this a grub problem?
View 9 Replies View RelatedEvery time I reboot my server, one of my hard drives drops out of the RAID5 array. I'm pretty sure that there's nothing wrong with the drive itself. I bought all three drives at the same time, and they are identical in make/model/capacity. While the server is running, it's smooth sailing. However, whenever I shut down or reboot, I get an email message that the array is degraded. It's always /dev/sda1 that drops out of the array. I can always rebuild the array by adding the partition back in, but it's a bit of a pain. Any suggestions on how to troubleshoot this?
View 13 Replies View RelatedI would like to setup a CentOS file server with LVM and Raid1. Having 6 x 500GB drives, 4 x 1GB Ram and a Quad Core Cpu, I am considering to configure 3 hdd as LVM then raid 1 to the remaining 3 hdd's.
View 7 Replies View RelatedI have installed RAID 1 with mdadm and it seems to work looking att /proc/mdstat..I wanted to test the system, so I removed the power cable for one of the disks. When I startup I get this message:
Primary hard drive 0 not found...And cannot start. I'm not sure if there is something in BIOS or in the RAID config? Any ideas?
Is there a way to auto run a script when a usb hard drive is plugged in without creating a udev rule or something similar. The idea is that no matter which computer I plug the drive into it runs the script automatically (I want to EXPORT some directories when the drive is plugged in)?
View 3 Replies View Relatedhow to set up a boot partition on the first hard drive separate from two RAID 5 configurations on a Supermicro server with 1-750GB hard drive for the boot partition, and 15-1TB hard drives for data. The 15 hard drives are split into two RAID 5 configurations (7 -TB drives and 8 1-TB drives). I will be installing CentOS 5.2, and the 15 Terabytes of data will store data, and the 750GB hard drive(on port 0) will only have the 100MB boot file. I am using 3ware BIOS Manager to configure the first array of 7 hard drives, and the second array of 8 hard drives (1 drive with boot information will not be included in the array).
to recap, picture this: I want to load CentOS on this server. /dev/sda1 (on the bottom left drive) needs to house the boot partition set for 100MB. The remaining 7 drives (the left half, not counting the boot drive) need to be set up as a RAID 5 array. The eight drives on the right (right half) also need to be setup as a RAID 5 array. After I configure this in BIOS, I run the CentOS setup disk in graphical mode. I get to the portion after the Language and keyboard setup where it says "Installation requires partitioning of your hard drive. By default, a partitoning layout is chosen which is reasonable for most users. You can either choose to use this or create your own. Select the drive(s) to use for this installation". The drives listed are:
"sda 5721980 MB AMCC 9650-SE-8LP DISK"
"sdb 1020 MB AMCC 9650-SE-8LP DISK"
"sdc 714218 MB AMCC 9650-SE-8LP DISK"
"sdd" 6675643 MB AMCC 9650-SE-8LP DISK"
When I choose "Remove Linux partitions on the selected drives and create default layout." or any other option, I get different errors. I notice when configuring via text mode I get better options to install. I can't install the boot drive separate from the two RAID configurations?
I have set up a software raid 5 and a software raid 1 on the same 3 disks.
But my problem is, every couple of days the software raid starts automatically resyncing. This resync is always succesful.
I do not know why this happens, any ideas to troubleshoot this further? I can not see an error in /var/log/messages
Dropbox will not start properly because my Lucid installation is on a SS HD (/dev/sdc) but my data, including my Dropbox folder is on an internal NTFS-formatted HD (/dev/sda), and I also have another internal HD for backups (/dev/sdb).
For some reason I can get the backups HD to auto-mount on startup, but not the data HD. My fstab file looks like this:
I burned the live version of OpenSUSE 11.3 (Gnome, 32bit) to a CD to test the compatibility of an HP Pavilion p6510f. Although Xubuntu 10.4 booted up fine, OpenSUSE did not. A message about RAID would appear (too briefly to read) and then the computer would reboot.I checked in the BIOS and found that the SATA drive has 3 modes: IDE, RAID and AHCI. The hard drive was set to RAID.
When I changed the hard drive mode to IDE, I was able to run the OpenSUSE live CD; but the change ruined my Windows installation. Windows doesn't boot under IDE or RAID mode. (I have reset the mode to RAID and am restoring the Windows installation.) Is there an option/argument that I can pass to the kernel so that OpenSUSE will work under RAID mode? (Since Xubuntu 10.4 was able to do it, I'm assuming OpenSUSE should be able to.)
I want to load ubuntu on my home pc. I have two hard drives but not have enough dvd's to back everything up on #2 hard drive. If I load ubuntu on drive 1 can I get in two drive two?
View 2 Replies View RelatedI recently installed a server with Software RAID. I tested by powering it down, unplugging one drive and powering it up. Magically, it worked!I found out later that I have to manually add individual devices like md1 to sda2 md2 to sda4. I got all of them added and rebuilt but my question is: Is there a way to make it so that if I "removed" a drive and put it back, the system will senses the new drive and rebuilds based on some internal table?
View 1 Replies View RelatedWhen I replace a drive in a RAID 1 and then resync it, why does the file access date (all the files) on the drive from which I am syncing not change? Shouldn't the file access date always change when I copy a file? Are there ways to overgo this?
View 3 Replies View RelatedI need to access each drive of a RAID array in order to update the firmware - I am completely new to linux. I think there are probably some potential challanges along the way to get this "working" For example, it seems to me that the array may present itself to application code as a single device. I need to drill down into the RAID and talk to each physical device in turn via some sort of pass-through mechanism. I'm currently pretty lost - can anyone point me in the "right" direction
View 2 Replies View RelatedI have been trying to install centos on my hp servers and when i get to partitions my hard drives the OS does not detect any harddrives. I have 4 scsi drives and i believe a intergrated smart array controller.
View 1 Replies View RelatedI have a WD 350 GB hard drive that crapped out in a Windows machine. I have a USB-to-SATA/IDE adapter and right after I pulled the drive out of the Windoze machine, I was able to access the drive and look at data to recover. However, I didn't get to download the data. Now I hooked it all up again and I get nothing. I can't see the drive anymore.
My question is simply this: Is there a way I can poll the USB port and see if I can see the drive from a command line? The File Explorer isn't even seeing the drive anymore either. I'm not savvy enough with Linux to know if there is another way to see if I can rescue the data on the drive.
My secondary disk drive is only 80GB but it's 80GB that I might as well use. How do I access it?I would like to do the same for this older, small harddisk but don't know what to do with vgscan --mknodes, vgchange -ay or lvscan.(BTW, hdb1 is where my main system boots from so I don't want to mess with that partition. Don't ask....it's ugly)
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