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2015-12-12 05:34:59 -0500 asked a question XFS filesystem error on openstack

Hi All,

We are having DELL Proliant 7xx machine. Where we have created a 4TB partition and re-directed all the ephemeral disks on it. Swift also lands over the same partition.

Things were running fine untill one day XFS crashed with some error as below :

Oct 29 15:32:02 host02 kernel: attempt to access beyond end of device

Oct 29 15:32:02 host02 kernel: sdb3: rw=32, want=6000000002, limit=5999218688

**Oct 29 15:32:02 host02 kernel: XFS (sdb3): metadata I/O error: block 0x165a0bc01 ("xfs_trans_read_buf_map") error 5 numblks 1

Oct 29 15:32:02 host02 kernel: XFS (sdb3): xfs_do_force_shutdown(0x1) called from line 383 of file fs/xfs/xfs_trans_buf.c. Return address = 0xffffffffa02ff9c1

Oct 29 15:32:02 host02 kernel: XFS (sdb3): I/O Error Detected. Shutting down filesystem**

Oct 29 15:32:02 host02 kernel: XFS (sdb3): Please umount the filesystem and rectify the problem(s)

Oct 29 15:32:02 host02 object-replicator: Error syncing partition: [Errno 5] Input/output error: '/srv/node/sdb3/objects/496/tmpEGTvyp.tmp'

Has anyone else came across XFS filesystem error like this ? Any suggestions for Swift and ephemeral disks ?

Regards, Abhay Dandekar

2014-11-21 10:09:13 -0500 commented question systemctl status neutron-server.service is not started

also post following files :



/etc/neutron/plugin.ini ~Abhay

2014-11-21 10:09:13 -0500 answered a question Unable to install openstack in ububtu12.04

Hi Abhilash,

Welcome aboard.

You will find 10 places on net where you will get the installation details. Assuming you are a fresh-grad, I would really suggest you to define your requirement first and then go ahead with installation of components specific to your needs.

Otherwise, there are a lot of components and getting lost at start is a fairly easy job.

Best of luck,


2014-05-13 06:28:44 -0500 answered a question neutron-server not able to start -

Can you pass on some more info about your setup. for e.g your neutron config file.

~Abhay Dandekar

2014-04-24 23:51:46 -0500 received badge  Editor (source)
2014-04-24 23:50:49 -0500 answered a question i installed openstack using devstack then i discovered that the swift service (object store) is missed how i can add it ?

Before going ahead with SWIFT, make sure your keystone is ready. If not, I'd suggest to go ahead with tempauth for time being, and later complete the picture with KeySTONE.

  1. If you already have a stack user, skip this step.

    ssh root@<ipv4 address="">

    adduser --gecos "" stack

    adduser stack sudo

    grep -q "^#includedir.*/etc/sudoers.d" /etc/sudoers || echo "#includedir /etc/sudoers.d" >> /etc/sudoers

    ( umask 226 && echo "stack ALL=(ALL) NOPASSWD:ALL" > /etc/sudoers.d/50_stack_sh )


Creating a stack user like this avoids the permission issues that I came across while installing mine.

  1. Now login as the stack user and setup Swift:

    ssh stack@<your address="">

    sudo apt-get -y update

    sudo apt-get -y install git

    git clone (

    cd devstack

    vim localrc # copy in the contents of this one


    screen -r stack

When running you might see an error message that reads “ERROR: at least one rpc backend must be enabled”. Don’t worry about it, Swift/Keystone doesn’t need an rpc (AMQP) backend. Also, you might not even face this issue because you are having the devstack already installed. You can also ignore any ImportErrors.

When DevStack is done you can point your OpenStack clients and jclouds dev env all at <ipv4 address=""> When you’re done with your development/testing you can delete the server to save money and just start fresh next time.

Execute a few REST PUT and GET commands to test your installation. One typical REST command is to get the list of containers. Just google it across, you will find 10 different ways to go ahead.


Abhay Dandekar

2014-01-22 22:02:08 -0500 answered a question Horizon Keystone and Swift only ?


Did you get a chance to look at this link : (

It seems what you need. Besides, horizon is just a dashboard, one should be able to configure it to only use what they need.


Abhay Dandekar