0
votes
0answers
12 views

SMART output - what's the significance and meaning of “verify” errors from smartctl -a for a HDD

Does anyone know the meaning of "verify" errors listed in the output of smartctl -a (or more precisely smartctl -l error), as well as their significance, if any, in trying to evaluate the health of a ...
1
vote
1answer
18 views

how to add a raw device on RHL

I am using a server to which someone added a harddisk. I am struggling to get this to work. I am a regular Linux user (but haven't done this stuff before). I have googled up and tried to follow the ...
1
vote
0answers
49 views

How to set the spin down timeout on WD Green HDDs [migrated]

My internal WD20EARS disk does not spin down autoamtically. I tried hdparm -S 1 (5 seconds), but nothing happens. I disabled the IntelliPower headparking with wdidle3 from the Ultimate Boot CD. hdparm ...
0
votes
1answer
65 views

Degraded RAID1 on debian 7.5

I am in a bit of a problem with my root server and a degrading RAID. Unfortunately, I'm no expert when it comes to RAID. System informations: Debian 7.5, SSD software RAID1, problem occur since a ...
1
vote
4answers
161 views

Rescue a Raid 1 from a dedicated server

I have a dedicated server (Hetzner EX4). One day, I rebooted the server and it wouldn't start. customer service told me that one of the hard drive was faulty, and activated the rescue system (Linux). ...
-1
votes
2answers
763 views

how to fix hard drive errors? [closed]

Suddenly, My hard disk is not working. While booting, It gives failed command: READ DMA and status: { DRDY } error. So, I booted the system with live CD and tried to mount the hard disk. It gives the ...
-2
votes
2answers
236 views

Why does a failed ZFS disk still seem to work fine?

Two disks just failed in my zpool with read/write errors, so I took them out and inserted them in another host, created a zpool just with them, and filled the file system with dd if=/dev/zero ...
0
votes
1answer
364 views

How to diagnose failed drive on server with raid storage controller?

I have problem with one of my Dell PowerEdge R210. Machine is with Centos 6, today system logs started to inform that the hard drive is failing. Jan 6 03:20:12 centos6 kernel: LSI Debug log info ...
4
votes
1answer
61 views

Why does fdisk have a discrepancy in translating units between cylinder and sectors?

We were re-partitioning a virtual disk to increase the size of an LVM's physical volume. This is how we initially performed this: $ fdisk /dev/sdb # delete partition fdisk> d ? 1 # create new ...
2
votes
2answers
94 views

Simulate database I/O behaviour [closed]

I'm investigating some performance issue and I need a tool that can mock the same I/O behavior that a typical RDBMS is usually creating. I don't want to install a full blown RDBMS and mess around with ...
0
votes
2answers
121 views

Expandable Linux filesystem w/ redundancy & support for different drive sizes?

I did a bit of research already and didn't come across any filesystems so far that have the following features: Expandability, Redundancy, and the ability to utilize the full capacity of different ...
-1
votes
1answer
387 views

Linux “/dev/SDA” goes read only file system on SDB device failure [closed]

i have a very peculiar issue that is running in my system. Using debian linux : My system boots up very normally with a primary and secondary hard disk. suddenly my secondary hard disk fails with ...
0
votes
1answer
87 views

HDD operations slow server down, hangs completely

When running a tar cvzf command or copying large folders on the production server, the CPU load goes up to 8.5 (running on 8 cores) and the whole system hangs, neither apache is responding to any ...
0
votes
1answer
117 views

mhddfs not support single file to split multiple hard drives.. if file size exceed limit of single storage device

I'm using mhddfs to combine multiple drives that are mounted over network using NFS. e.g. There are three machines Server Name Dir Space Server 1 /home 10 GB Space Server 2 /home 10 GB ...
0
votes
2answers
97 views

A faulty Caviar Blue hard drive?

We have a small "homemade" server running fully updated Debian Wheezy (amd64). One hard drive installed: WDC WD6400AAKS. The motherboard is ASUS M4N68T V2. The usual load: CPU: an average of 20% ...
-1
votes
1answer
133 views

Display Power on hours of hard disk from shell

Is there a program which can display the power on hours of a hard disk from a *nix shell? I'm rewriting a server benchmark program, and this would be a useful value to compare.
0
votes
2answers
176 views

Create logical volumes from partitions in linux

I have a server running RHEL with below hard disks configuration. [root@localhost indika]# fdisk -l Disk /dev/sda: 150.3 GB, 150323855360 bytes 255 heads, 63 sectors/track, 18275 cylinders Units = ...
0
votes
0answers
323 views

file system rootfs, which is mounted at /, reached warn status because it is 90% full

I have a dedicated server with OVH. Problem is that i keep receiving warnings that the / is getting full. Yesterday it was 89%, today it is 90% and tomorrow it will probably be 91%. It keeps ...
2
votes
1answer
682 views

High iowait for unknown reason

I'm having a hard time figure out the reason cause high iowait on my server. This is log of iostat -xm 5 5 Linux 2.6.32-358.6.1.el6.x86_64 (prod-1.localdomain) 09/28/2013 _x86_64_ (16 CPU) ...
1
vote
2answers
220 views

df -h disk usage of empty disk shows 188M usage ?!

I have an empty disk mounted as /data The df -h shows me that 188M are used while a du -h shows me 4,0K. root@marc:~# du -h --max-depth=1 /data 4,0K /data root@marc:~# df -h Sys. de fichiers ...
0
votes
1answer
178 views

Badblocks not displaying “Pass completed” after finishing

This is the command I am running to test a HDD with badblocks: badblocks -b 4096 -c 98304 -w -s /dev/sda1 The output is: [root@localhost liveuser]# badblocks -b 4096 -c 98304 -w -s /dev/sda1 ...
2
votes
1answer
160 views

GNU/Linux: SAS-disk detected as /dev/sg7 - not as /dev/sdb

I have just installed a SAS disk into a Debian server. It was detected correctly and everything was fine. Then I moved the SAS disk to a different Debian server, the same hardware model and running ...
-2
votes
1answer
203 views

SATA disks instead of SAS - DELL 2950 [closed]

I have a DELL 2950 with a PERC5/i controller and a SAS backplane and my intention is to switch to SATA on the cheap. I don't even have drive trays. This backplane has SAS ports. I just bought 2 ...
0
votes
2answers
374 views

No space left on device

I have a vServer and I can't upload/copy files. It says "no space left on device" but I have like 130 GB on my hdd. This is what it shows on: df -h / df -h / Filesystem Size Used Avail ...
1
vote
1answer
420 views

Hard disk error

There seems to be something wrong with my hard drive, but I'm not sure what, or how to proceed. The first sign of any problems was this: I tried making a new directory on my server, but when I did ...
-3
votes
1answer
95 views

Sharing drive contents using Samba - What harddrive format? [closed]

What format should my harddrives be if I am putting them in a ubuntu server with the intention of sharing the drives contents using samba to other PC's, Macs and linux PC's? I don't know if I should ...
0
votes
3answers
297 views

What's the best way to have a backup image of system disk?

Under windows system I'm used to create an image of HD with driveImageXML. What's the best approach to have an Image of the hard-drive containing the OS, with Ubuntu Server? I'd like to have a ...
2
votes
2answers
267 views

RAID 10 — how do you know a drive is going or is bad?

I have some servers with a datacenter all the servers have RAID 10 setup. How do I know when one of the drives is going bad or is bad and needs to be replaced? EDIT: These servers are unmnaaged and ...
-1
votes
1answer
60 views

Is this a sign of a bad drive? [closed]

smartctl --attributes --log=selftest /dev/sda smartctl 5.43 2012-06-30 r3573 [x86_64-linux-2.6.32-379.22.1.lve1.2.17.el6.x86_64] (local build) Copyright (C) 2002-12 by Bruce Allen, ...
0
votes
1answer
103 views

Is there anything I can do with a software RAID 1 on linux to workaround temporary 'bad' sectors?

Basically I have two identical hard disks that are in perfect working order, they just don't have the vibration tolerance they need for the environment they are in. (I am making an educated guess that ...
1
vote
4answers
169 views

How to move the MySQL datadir with minimal downtime?

Let's say I have partition sda2 mounted on /var and it's almost full. I have a second disk sdb whose partition sdb1 I want to mount as /var. Now since a running service (mysql) is using /var all the ...
0
votes
2answers
131 views

Will adding RAM improve web server disks read performance?

I'm wondering if in case of linux based web server, serving the same static files over and over again, adding RAM will improve read performance? It should probably add to size of page cache, and ...
-2
votes
1answer
60 views

Linux Server HDD Corrupted

Today I put my forum offline just before scheduled Cpanel backup. An hour later when I checked it says DATABASE error occured(or whatever the database error was) I logged into SSH and perform reboot. ...
3
votes
3answers
3k views

Forcing a verbose fsck on reboot (Ubuntu)

I'd like to force a verbose fsck on reboot of my Ubuntu linux server, I can get fsck to run on reboot by creating a file /forcefsck in my root dir ... Additionally, by adding a y into the contents of ...
2
votes
2answers
187 views

Disk Monitoring with cronjobs — report disk issues

Is there a way to monitor disk health and send cronjob reports for errors? I know you can use smartctl -s on -a /dev/hda to pull information but just wondering if there is a way that could be used to ...
1
vote
2answers
88 views

Could resizing a partition break the filesystem? [duplicate]

Possible Duplicate: Kernel Errors Present: EXT4-fs I resized a partition (using Gparted live cd), and it went fine. A day later I've started to get EXT errors. Could these two events be ...
0
votes
1answer
40 views

Is there a hook that I can use to detect if one of my hard drive partitions on my server is full?

I have a server with a partition that contains all the uploaded files from my users... It gets empty after the files received are send to the CDN. Everything works. But I am worried that one day the ...
-1
votes
3answers
317 views

How can I prevent silent corruption on a dying hard drive? [closed]

With a drying drive (that has more and more bad sectors), on an ext4-journaled partition, a cp operation will sometimes complete without error, but the written data will either be wrong, or just won't ...
0
votes
3answers
124 views

mysql crashs. bad hard drive or hardware

ive seen highloads and mysql crash 2 times in 1 week now. could this be the cause any idea? Jan 3 09:49:19 HOST kernel: [2272100.568769] res 51/40:38:78:7f:f1/40:00:35:00:00/e0 Emask ...
-1
votes
1answer
148 views

Mounting local external hard drive on a remote machine [closed]

I have an external hard drive, which stores extremely large files. This is LOCAL and is connected to my laptop/desktop. I run many different programs on a REMOTE Linux server. I need to use some of ...
0
votes
1answer
220 views

Linux RAID10 hit bad disk while re-syncing. Is it hosed?

I have a Linux software RAID10 device on md0. It's made up of 4 1TB disks sd[abcd]. Yesterday Smart emailed me to say a disk was going bad (seek errors going up and reallocated sectors). I rebooted ...
3
votes
1answer
719 views

Rebuilding RAID 10 array with two failed drives

I have dedicated server with 4 HDD in hardware RAID 10 configuration and It worked fine until yesterday, when It started to crash randomly on couple minutes. I’ve contacted my data center and they’ve ...
0
votes
1answer
2k views

end_request: I/O error, dev sda, sector xxxxxxxxx

I have a IBM server. This server contains 3 hard disk with RAID 5. It was working fine earlier. Unfortunately this machine got the following error message. After that I have rebooted the systems. ...
0
votes
2answers
828 views

How long do uploaded files stay in the tmp folder in Linux Ubuntu?

I am building a web application where my users will be able to upload files. After the files are uploaded I need to send the files to two other servers, and after they will be deleted from the server ...
1
vote
1answer
108 views

Can LVM and Traditional Partitions Coexist?

Can you set up a machine in which different drives are formatted as either LVM volumes or as traditional partitions and mix and match the two? For e.g. have the LVM volume mounted as / and /home and ...
3
votes
3answers
139 views

one 16K random read I/O issues 2 scsi I/O (16K and 4K) requests in linux

I noticed weird issue when benchmarking random read I/O for files in linux (2.6.18). The Benchmarking program is my own program and it simply keeps reading 16KB of a file from a random offset. I ...
0
votes
2answers
229 views

Best redundant way to set up multiple drives of different sizes

I have a linux server (running Ubuntu 12.04 Server currently) that I need to set up multiple hard drives of differing sizes in primarily for media/backup purposes. The sizes are: 1x2TB 1x1TB ...
0
votes
2answers
1k views

Resize Debian in VirtualBox [closed]

I have a VM with one HD of size 3GB and I'd like to enlarge its HD to 7GB. So I execute this command on the host (while guest is shutdown): VBoxManage modifyhd debian.vdi --resize 7168 Then I run ...
3
votes
1answer
2k views

Mounting an old LVM hard drive in Fedora 17 gives error message

On Fedora 17, I am trying to mount a hard drive as slave using the following command: mount /dev/sda5 /mnt/fedora8 And I get this error: mount: unknown filesystem type 'LVM2_member' How do I ...
-1
votes
2answers
892 views

Do partitions needed to be unmounted when resizing a partition?

I have this article http://www.centos.org/docs/5/html/5.2/Deployment_Guide/s2-disk-storage-parted-resize-part.html which is not clear to me. And also someone told me that swap space does not need to ...