CentOS 5 Hardware :: Install Ruined By RAID5 Disk Failure?

Mar 8, 2010

I've tried to type this message twice in detail, but the computer won't submit it. What are the proper steps to take when a SCSI drive fails in a RAID five array running CentOS 5.4?

Yes, I read the manual. On a Dell 6650 system the drive can't be rebuilt because it is not recognized as the correct size. Linux rescue doesn't work... won't find the linux partitions that are still there according to fdisk -l

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Ubuntu Servers :: Convert Mdadm 6 Disk Raid5 To 5 Disk Raid5?

Jun 30, 2011

I know you can fail and then remove a drive from a RAID5 array. This leaves the array in a degraded state.

How can you remove a drive and convert the array to just a regular, clean array?

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CentOS 5 :: Disk Failure And Software Raid 1?

Jun 9, 2011

Following scenario: My server in some data center on a different continent with two disks and software raid 1.

One day I see that a disk failed (for example with /proc/mdstat). Of course I should replace the failed disk asap. Now that I think about it, I am not sure how. What should my email to the data center support guy mention to make sure that guy doesn't replace the wrong disk?

With hardware RAID it is very easy, because the controller usually has some kind of red LED indicator. But what about software raid?

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Debian :: Disk Health Warning - Disk Part Of RAID5 Array

Feb 17, 2016

I received the following error when I got home from work today. If this was a windows environment, my first inclination would be to boot off my dvd and then run a chkdsk on the drive to flag any bad sectors that might exist. But there's a complication for me.

Code: Select allThis message was generated by the smartd daemon running on:
   host name:  LinuxDesktop
   DNS domain: [Empty]

The following warning/error was logged by the smartd daemon:
Device: /dev/sdc [SAT], 1 Currently unreadable (pending) sectors
Device info:
WDC WD5000AAKS-65V0A0, S/N:WD-WCAWF2422464, WWN:5-0014ee-157c5db9a, FW:05.01D05, 500 GB
For details see host's SYSLOG.

You can also use the smartctl utility for further investigation.The original message about this issue was sent at Sun Feb 14 13:43:17 2016 MST.Another message will be sent in 24 hours if the problem persists.

From gnome-disks
Code: Select allDisk is OK, 418 bad sectors (28° C / 82° F)

I did a bit of reading and it seems that most people suggest using badblocks to first get a list of badblocks from the drive and save it to a file. Then use e2fsck to then mark the blocks listed in the badblocks file as bad on the hard drive. My problem here is that this drive is part of a RAID5 array that hosts my OS. I wanted to confirm if this was still the correct process.I boot to my Live Debian disk, stop the raid array if it's active. Then run badblocks + e2fsck commands on the drive in question and then reboot.

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Fedora :: RAID5 Failure During The Boot Process, And Can't Find The Array?

Mar 31, 2011

I am able to retrieve data off a RAID5 array. History: My system disk was partitioned to 10 gigs and over time was filled up to 100% locking me out of the GUI (I am a casual user). Now that I am relegated to the CLI, I need help to see if rebuilding the array and keeping the data intact is possible. I have three sata hard drives in the array and now it appears during the boot process, it fails and can't find the array.

I did the following:
mdadm -D /dev/md0

and here's some of the output:

State: active, FAILED, Not Started

And out of three drives, it states that two have failed. I find this hard to believe as I have had no issues until my system disk was full. A coworker today helped me find some files to delete and now have the system disk down to 97%/8.8 gigs yet I can still not enter the GUI due to the array issue.

Out of the three discs, here are the results (taken also from mdadm -D /dev/md0):

Number Major Minor RAID device STATE
0 8 1 0 active sync /dev/sda1
1 0 0 1 removed
2 0 0 2 removed

Sorry for providing so little, but I am in (Repair Filesystem) mode and only have local access to the machine meaning all outputs will need to be retyped.

I am able to do anything to the box as its only purpose was media storage and serving.

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Software :: RAID5 Fail To Start Array After Power Failure

Apr 23, 2010

I am having a RAID5 with a spare(total 4 disk).then the steps which lead me to a problem:

1. i was doing I/O on the array.
2. i pulled out a drive manually. So the spare drive took care of the failed one and started rebuilding. then
3. in the, mean time i pulled out the power plug of my NAS box.
4. After power up i saw my array was not active(by -D command option of mdadm). then
5. i executed: mdadm --assemble --scan /dev/md0 it gave me

I checked into the linux source and found that bd_claim is a function inside fs/block_dev.c and it failing due to which lock_rdev function (calling bd_claim in md.c) is failing and we are not able to start the array.I don't know why my RAID is not live after power on.
Plese help atleast can i save my data?

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Ubuntu Installation :: Disk Boot Failure After Fresh Install

Oct 16, 2010

After buying a new PC, I decided to "reorganize" my former PC as follows:Initially it has been a dual (SATA) disk dual boot PC- one disk for each OS, while XP was fully installed on a single NTFS partition. Using Gparted I shrunk the XP partition, and created some Linux partitions. I've verified that the XP partition (sda1) is bootable. Afterwards, I removed the other (former Linux) disk from the computer. While doing so, I had to temporarily disconnect cables from both drives. Finally, I fresh installed Mint 9 (Ubuntu 10.04 derivative), on my pre-prepared Linux partitions. Installation completed flawlessly, and during the install, I've noticed that GRUB2 has been installed on sda. Rebooted and got "Disk boot failure" error.

I've checked the BIOS and noticed that the (single) drive was not recognized.
I manually tested from the BIOS and located the drive as IDE3. Saving the new configuration (F10) and rebooting- the HD gain is not identified (the CMOS battery is fine- keeps time).

Booting a live CD I can see and access all above partitions.

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Fedora Installation :: Disk Boot Failure After Fresh Install From Live CD.12?

Feb 15, 2010

I've run the install to hard drive program three times over and each time I get "disk boot failure". I believe I've got Grub to install to the mbr but I am not sure.

System:
Barton 3200+ with 1GB of DDR1
Asus A7V333
High Point hard disk controller

other items

All the hard drives are hooked to the High Point controller. It recognizes all of them that have power hooked up and read/writes to them. Two have 98SE installs, the third is where I'm trying to install Fedora 12 to get away from some problems I'm having with 98SE.

The BIOS is set up to boot from the "SCSI device" which means it's booting from the High Point controller. The High Point lets me set a boot mark, which, when set to the Fedora drive, yields the disk boot failure no matter what I do to it.

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Debian :: Chromium Browser Install Ruined System - Way To Reverse?

Sep 1, 2011

I've been using Debian for a month or so now and was really happy with it. I wanted to use Chromium browser and followed the instructions on the Debian wiki [URL].... but the install deleted a load of settings, network manager etc. Is there a way I can find a log of what happened? Is there a way to reverse that or shall I just reinstall?

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Ubuntu :: Can't Add A New Disk To A RAID5 Array

Jun 10, 2011

I am trying to build a new array after adjusting TLER on my disks, which permanently changed some of the drives sizes. I am not sure if the following inconsistencies are related to the newly mismatched drive sizes.

Using:

Code:
mdadm --create --auto=md --verbose --chunk=64 --level=5 --raid-devices=4 /dev/md1 /dev/sdd /dev/sde /dev/sdf /dev/sdg
Nets me (build-time was two full days):

[Code]....

On a side note, since I'm recreating my array from scratch, I was wondering if anyone here knows of any optimized settings I could use. I've got 3Tb of data to transfer, so lots of test material.

These are Western Digital First Generation 2TB Green Drives (WD20EADS-00R6B0) with WDidle3 fix applied & TLER=ON. These are pre Advanced Format (aka not 4K).

Code:
mkfs.ext4 -E stripe-width=48,stride=16 /dev/md1

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Ubuntu :: Extend Raid5 Array With One Disk

Mar 6, 2011

I wanted to extend my raid array with one disk, but I made a major error. I forgot partition the new disk to utilize the full 640GB. I used the following commands to extend the array:

Code:
mdadm --add /dev/md0 /dev/sdf
mdadm --grow --raid-devices=6 /dev/md0
xfs_growfs /dev/md0

After noticing that something was wrong I used these commands to remove the new disk:

[Code]....

How can I repair this situation? Before starting this adventure I made a back-up of everything that was stored in the raid array.

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Hardware :: Fedora 11 RAID 1 - Disk Failure - Boot From The Single Working Disk?

Oct 16, 2009

my Fedora 11 system is not starting anylonger. It stops with the message:

Code:

VFS: Can't find ext4 filesystem on dev dm-0

The system told me since a while, that a lot of the sectors of one disk of the (software) RAID compound are failed already. So tried to disconnect each of the disks and start them separately. Unfortunaltly this is not working (for one its is not working at all, the other wents the same far as with both), when I tried to recover the system with the Fedora DVD, it said no distribution found. I am quite new and do not know so much about linux system, so i do not know what further information you could need. Maybe it can be important, that both disks are encryped (the system wents so far, that I can type in the password).

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Ubuntu Servers :: 10.04 Server Hangs When RAID5 Disk Is Removed

Jul 20, 2010

I've got a new Ubuntu 10.04 server install with a new 3 disk RAID 5. The boot disk is separate, not part of the RAID. I was trying to practice what I would do if a disk died to recover the RAID, so I unplugged one of the three disks. The machine now just hangs on startup. It shows fsck at the top of the screen but doesn't got anywhere from there. If you press a key it shows the Ubuntu splash screen. If I plug the disk back in, everything boots up normally. So, my question is, how do I get the machine to boot with one of the RAID members missing? I know I can recover it using the Live CD, but it would be nice to be able to get back into the machine without the CD.

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Ubuntu Servers :: OS Drive /dev/sda Changed Labels With Raid5 Disk /dev/sdc?

Jun 25, 2011

My original config:

**Partition/Drive info**

/dev/sda Boot----------> 298.09 GB Hitachi HDT72503
20GB /
16GB /swap
50GB /var

[code]....

1. For some odd reason I tried connecting to a samba share as I had it setup and I could not.

2. Looked at webmin and it said my whole /dev/md0 RAID5 was being used..about 7.8TBs. decided to check my RAID5 setup and drives and noticed

**NEW Partition/Drive info**

/dev/sda Raid Array 1 1.82 TB SAMSUNG HD204UI
/dev/sdb Raid Array 1 1.82 TB SAMSUNG HD204UI
/dev/sdc1 /

[code]....

I didn't connect any new drives or anything. I had checked my "mdadm.conf" and "fstab" and everything looked the same?

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CentOS 5 :: CentOS 5.4 Does Not Boot Properly After RAID5 Recovery?

Mar 23, 2010

I had a sata drive go down on my software raid array a couple days ago..After replacing the defective drive, I rebuilt it using fdisk to set partitions and mdadm to add the drive back into the raid array.After getting md2 to mount to /mnt I copied the /mnt/etc/fstab and /mnt/etc/mdadm.conf to the /etc directory and rebooted..When I boot, my /dev/md2 partition is not mounting to / It is not loading all of the services at boot time it should.. the size of /dev/md2 on / is even wrong.. it should be about 1.3TBwhen I manually mount /dev/md2 to /mnt I can access all of my data, through /mnt/var/www/vhosts and so on.. I am at a loss, why is the machine booting to this craziness?All of my data, that I know of can be accessed when md2 is mounted to /mnt[root@ESS000272 etc]# cat mdadm.conf

# mdadm.conf written out by anaconda
DEVICE partitions
MAILADDR root

[code]....

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Ubuntu Servers :: Faster Write To Disk And Backup Of Data , Putting Together A Raid5?

May 13, 2011

Here is my brief hardware and software detail in my production environment : AMD Phenom X4 3.4gHZ (Over clock to 4gHZ, 8G of Memory, 1TB 7200rpm Harddrive, Running Ubuntu server 10.10.My web production environment were pieced together 3 weeks ago.Here is my dilemma. started out with less that 40 users and now hitting 4,000 unique users per day.Now I am thinking I need faster write to disk and backup of data so I am thinking about putting together a Raid5.

I preparation for this.I have bought a new motherboard, AMD Phenom X4 3.6, and 2 more 2TB 7200rpm (Currently, I have a 2TB 7200rpm not used much)Been digging around this forum for posts with raid setup but still not sure how to seamlessly moving the some 10Gig of data from my current running prod environment once I have RAID5 installed on this new machine via the LIVE Ubuntu Server CD.

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Ubuntu Servers :: Does Replacing Failed Disk On Raid5 Change Any Data On Other Disks In Raid

Jan 9, 2011

I've got a raid5 array of 4 disks with ubuntu 8.04 runing on it that is currently still working:

/dev/sda
/dev/sdb
/dev/sdc
/dev/sdd

Smartmontools for /dev/sdc tell that there are 9 sectors pending for reallocation:

Code:

197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 9
198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 9
And /dev/sdd has increasing number of reallocated sectors (about 1 every couple of minutes):

Code:

5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 1735
/dev/sdc has failed a coulple of times this week (but I have always sucessfully readded it to raid5) . But the increasing number of reallocated sectores on /dev/sdd concerns me even more.

I'm affraid that during removal of /dev/sdd and adding new /devs/sdd disk, raid might fall appart. That's why I would try to do it in Ubuntu Live CD:If the raid falls appart (/dev/sdc fails) during the readding of new /dev/sdd disk, I might still remove the new /dev/sdd and return the previous one and assemble the raid with:

/dev/sda
/dev/sdb
/dev/sdd (old one that was previously removed)

Does assembling Raid in Ubuntu Live and adding new disk for /dev/sdd write anything on /dev/sda, /dev/sdb and /dev/sdc in the process of adding /dev/sdd into raid5?

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CentOS 5 :: Install CentOS 5.2, And The Installation Ran Out Of Disk Space After Running For About 2 Hours?

Feb 18, 2010

I am trying to install CentOS 5.2, and the installation ran out of disk space after running for about 2 hours.I checked the FAQ, and it said 1.2 GB. The disk is 3 GB. The default install was selected, and I think that it checks for sufficient available disk space before installing. Still, it ran for quite a while before announcing that it was out of disk space.The Installation Guide is not very helpful, since there is a blank page where the disk space requirement is supposed to be. I just picked the default installation. A search of the forums on "not enough disk space" did not return much.

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CentOS 5 :: Cannot Install CentOS On Large Disk (> 8 TB)?

Apr 20, 2010

I have a server with 10 disks 1TB with RAID 5, and I want to install CentOS 5.4 on this disk, but fail

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CentOS 5 :: 5.3 And LSI Megaraid 8204ELP - Won't See Raid5 Array

Jun 26, 2009

I have looked thru the forums and I am not sure if LSI 8204ELP definitely works with Centos 5.3 or 5.2 or 5.1 or not. Can anyone who has had a positive experience with this hardware combination give some feedback etc. mobo is supermicro c2sbx [URL]

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CentOS 5 :: Increase Space On RAID5 Array?

Sep 12, 2009

Ok, as the title indicates I have a RAID5 array with 4 500GB SATA drives. This is the only drive configuration on the system (i.e. the OS also resides in the RAID array). I'm running CentOS 5 and need to know how to go about increacing the space in the RAID array by replacing the drives with 4 1TB drives.

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CentOS 5 :: Upgrading RAID5 Array With Larger Drives?

Feb 17, 2011

I have a CentOS 5 based Linux system with a 3Ware 9550SU RAID card and four 500GB drives set up in a RAID5 array (3 in the array and 1 hot spare).

I want to 'replace' these drives with four 2TB drives without data loss. My server case has a total of 8 drive bays all hot-swap and all attached to the RAID card, this means I have four empty drive bays on the RAID card.

One thought is to put the four new 2TB drives in the empty drive bays, configure them in a new RAID5 array. Then the question is now to I "mirror" the original RAID5 array over to the new one?

This is just a thought though, I am not sure it will work. In short my question to this forum is how do I accomplish this upgrade?.

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Hardware :: Check Hard Disk For Errors. Possible Hard Disk Failure?

Jun 21, 2011

I was using Terminal and browsing a directory in my home folder. My "home" directory is located on "/dev/sdb1". When in Terminal I typed "ls" in one of my directories and the output was garbage. The output didn't show the files in the directory. I think it said something like, "input/output error". Unfortunately, I didn't write the exact error down. Instead I rebooted.The hard disk with the problem is:

Code:
$ sudo hdparm -I /dev/sdb
[sudo] password for brian:

[code]...

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General :: Convert Full-disk RAID5 Array To Partition-based Array?

Dec 23, 2010

I have a RAID 5 array, md0, with three full-disk (non-partitioned) members, sdb, sdc, and sdd. My computer will hang during the AHCI BIOS if AHCI is enabled instead of IDE, if these drives are plugged in. I believe it may be because I'm using the whole disk, and the AHCI BIOS expects an MBR to be on the drive (I don't know why it would care).

Is there a way to convert the array to use members sdb1, sdc1 and sdd1, partitioned MBR with 0xFD RAID partitions?

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CentOS 5 Hardware :: Disks Switched Place In 2 Different RAID5 Arrays?

Feb 21, 2011

We have CentOS on an HP proliant g5 server and attached to it is an DAS with 3 branches of disks so 5 - 5 - 5 drives.Now what we had so far there is that every branch was on raid 5 and totaling 3 mounted drives each with 4TB (disks are 1Tb each).But a couple days ago something happened while i was replacing older drives with some bad sectors with new one. What I did is to remove old drive, put in new one, initialize and attach to array and rebuild starts.Now somehow 2 drievs ( as i was rebuilding 2 arrays at once) switched place.so disk on 1_1_5 and disk on 1_3_5 switched place. There coul dbe possibility that I made mistake and assigned them to different arrays when initializing but that is really hardly as i replaced one then later another so...

Anyway to the to the point.Is there painless option to remove 1 disk from array and then assign it to other array and then let raid rebuild everything normally?I;ve made backup of everything there so there is no fear of loosing anything...By the way at the same time when that switch happens a partition from 1 raid array completely dis speared and there is only unallocated space on that one right now.

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Server :: Recreate A Raid5 MD0 Into A Raid5 MD3?

Jan 9, 2010

I have no drive failures but just need to recreate a raid5 set as the next free MD disk number. Originally I built a temp OS of debian on a single drive and had 4x2TB drives in a raid5 software array (MD0) this worked fine and allowed me to move all data to it, and remove our old fileserver. I have now pulled out the 4 x 2TB Raid 5 drives and created a new OS on two new 80GB drives, partioned as follows,

MD0 is now 250mb Raid1 as /boot
MD1 is 4GB Raid1 Swap
MD2 is 76GB Raid1 as /

If I turn off and push back in the 4x2TB drives I cannot see a MD3. I presume I would need to create a MD3 from these 4 drives but I dont want to mess things up as its live data. So im here asking for help, or a bit of hand holding to get it done right.

PS - Its a Debian Lenny 5.0.3 Raid1 fresh install replacing a Debian Lenny 5.0.3 on a single disk.

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CentOS 5 :: Disk Setup On New Install?

Jun 29, 2009

I am very new to centos and just setting up my disk. I have a dell 1850 with 2 69GB disks. When I get to this screen ( shown below) the disc configuration shows two discs "SDA2" and "69774MB". What I am wondering is this confuration ok. I assume the SDA2 is my secondary disk? Why is it using the secondardy disc and not the primary SDA1?

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CentOS 5 :: Install On A VMWare Virtual Disk?

May 31, 2011

Is it possible to install CentOS on a VMWare virtual disk?

And if it is, how many MB is necessary for CentOS 5.6?

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OpenSUSE Hardware :: External Disk USB 2.0 Failure?

Sep 14, 2010

Since I installed 11.1 and now 11.3 I haven't been abble to access my LaCie 500gb USB 2.0 external disk. So I asked LaCie support about it and they replied as follows:Windows 2k or SuSe Linux 11.0 can not see device in any USB 2.0 portsIs this a known problem and will it ever be fixed?

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Ubuntu Installation :: Disk Boot Failure 9.10

Mar 18, 2010

Ubuntu/Linux operating systems. It installs just fine but after it reboots I get a "disk boot failure, insert system disk". I have searched around but I can't seem to find anything that works. There is only one hard drive in my computer and no other operating systems on it.

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