0
votes
0answers
62 views

Can't mount bin/iso image from AWS import/export service

A client sent a 2 TB drive to AWSs import/export service; AWS put it in an S3 bucket in two chunks. I catted the two chunks together as an iso file, and tried to mount it, using the directions listed ...
0
votes
1answer
45 views

MySQL Replication across two mounts on AWS Amazon Linux

Recently we took advantage of the SSD instance stores available on AWS. While these are great, they obviously get deleted when the instance dies. Obviously the performance of non Provision IOPS is ...
0
votes
0answers
80 views

confused by iostat reporting striped mdadm more tps than aggregate volumes

I've got an mdadm striped device (/dev/md0) from /dev/sdm{1..4}. Here is an output of iostat 30 and then mdadm --detail on the mdadm device # iostat 30 Linux 2.6.32-309-ec2 (ip-xx-xx-xx-xx) ...
0
votes
1answer
60 views

Bootstrap not mounting EBS volume

I'm running the following when Bootstrapping an Ubuntu 12.04 EC2 instance: mkfs.ext4 /dev/xvdf mkdir /vol01 echo "/dev/xvdf /vol01 auto noatime 0 0" | tee –a /etc/fstab mount /vol01 It formats the ...
3
votes
2answers
90 views

Should I always partition a virtual drive?

This might seem like an odd question at first, but I was experimenting with an Amazon EC2 instance and forgot to partition an EBS drive under Linux. I discovered I could directly format it with a ...
1
vote
2answers
1k views

Amazon Ec2 Linux still shows old Volume size even after increasing

Initially i had EBS boot as AMI image with 10GB EBS volume. Then i created new 20Gb EBS volume and then attached that to old instance and booted Then i see that i still have 10GB mounted as ...
0
votes
2answers
187 views

Which EBS drive attached to my Amazon EC2 instance contains root volume?

I have an Amazon EC2 instance that has two EBS drives associated with it: an 8 GB drive at /dev/sda1, and a 20 GB drive at /dev/sdf. I didn't set this up so I'm not sure why this instance needs two ...
3
votes
1answer
1k views

Find current IOPS usage of EBS volume from my application on AWS EC2

I am relatively new to AWS and disk performance. I am trying to figure out how much provisioned IOPS does my application need to perform well. Currently My PHP and MySQL application is hosted on EC2 ...
2
votes
1answer
799 views

Increase size of mount point

I created an EBS volume (100GB) from a snapshot (10GB), but when I attach the volume to an instance and mount it as /vol, then I check with df -h, I see that /vol has size of 10GB although it's a ...
0
votes
2answers
803 views

How to move Mdadm RAID drive (EBS based) to different AWS Instance

We have a media-rich web application that is hosted on AWS. We have several Web Servers and we have an NFS server. On the NFS server (Linux server) we have several EBS volumes that are mounted and ...
2
votes
3answers
198 views

quickly empty a Linux partition

I want to empty out all the data on a partition. What is the quickest way to do this? It is an Amazon EBS volume if that matters.
1
vote
1answer
2k views

“Disk /dev/xvda1 doesn't contain a valid partition table”

Iam newbie to EC2 and Ubuntu 11 (EC2 Free tier Ubuntu). I have made following commands. sudo mkfs -t ext4 /dev/xvdf6 sudo mkdir /db sudo vim /etc/fstab /dev/xvdf6 /db ext4 noatime,noexec,nodiratime ...
2
votes
1answer
118 views

Recovering the remainder of an ext3 volume spread over multiple lvm physical volumes

I have an LVM logical volume spread over eight separate physical volumes on Amazon AWS. The logical volume is formatted using ext3. One of my physical volumes has failed. Is there any way to recover ...
16
votes
1answer
7k views

How do I access the attached volume in Amazon EC2

I just attached another ebs volume to running instance. But how do I access the volume? I can't find the /dev/sda directory anywhere. Where should I look?
1
vote
1answer
438 views

How many EBS drives I can mount on a single EC2 instance using Amazon Web Services ( AWS )?

How many individually functioning EBS drives ( non-raided ) can I connect to a single Amazon EC2 server running Linux CentOS? I can't find a value in the EC2 or EBS manuals. Are there any other ...
7
votes
1answer
1k views

XFS: no space left on device, (but I have 850GB available!)

I'm using a combination of mdadm, lvm2, and XFS on Amazon EC2. So far, I've had success running a RAID 5 volume built from a number of EBS volumes. The EBS volumes are attached and used with mdadm to ...
0
votes
1answer
326 views

increasing amazon root volume size

I have a default amazon ec2 instance with 8GB root volume size. I am running out of space. I have: Detach the current EBS volume in AWS Management Console (Web). Create snapshot of this volume. ...
0
votes
1answer
922 views

What can go wrong with dmsetup suspend / resume?

I have a backup procedure for ec2 instances with lvm spanned volumes that does the following: 1) ssh to the box as root using an ssh forced command to dmsetup suspend the spanned volume. 2) take an ...
6
votes
5answers
3k views

Automated snapshots of EBS-backed EC2 instance running Ubuntu

I'm running an EBS-backed instance which acts as a software development team's build server (running Jenkins and host of other services). The server is running Linux (latest Ubuntu from the official ...
1
vote
1answer
242 views

How to change switch to a different root partition

I am using AWS EC2 instance with Ubuntu 10.04 installed on it. I start with the instace which has its root partition at /dev/sda1. Later I want to attch a new EBS volume at /dev/sdb1 and want to get ...
2
votes
1answer
177 views

pdflush hanging on Amazon EBS drives when using multi-GB files - any workaround?

When I run gunzip on a 1.7GB file (which generates an 8GB file) on an EBS volume, pdflush freezes after gunzip runs and the CPU hangs indefinitely at 100% IO Wait. Here's the output from 'ps aux | ...
2
votes
3answers
996 views

EC2 EBS AMI Instance stopping/restarting doesn't start services

I've recently been moving our instances to EBS instances (CentOS) and still have a bit of confusion on what's happening when I "stop" and instance. I have some of my services with runlevels 345 on but ...
3
votes
2answers
7k views

is CPU actually occupied during iowait (%wa in top) on Linux / EC2?

On an 8-way Amazon EC2 instance (running Linux 2.6.21) with 8 EBS volumes and a lot of disk traffic, we see high %wa in top (30-40%), and high load average (8-9). My understanding is that processes ...