Stream

Join this community to post or comment
Pinned by moderator

Petros Koutoupis
owner

Discussion  - 
 
Now that we are growing strong as a community, I figured that it was time to update the introductory post.

WELCOME to the Linux Data Storage community my fellow Linux (and open source) aficionados!

We have built up this community to encourage both novice and experts alike, in the field of data storage and how it relates to open source technologies. While this community is geared primarily toward Linux, you are still invited to post related non-Linux open source topics.

If your interests are filesystems, data backup / recovery, portable & LAN based storage, there is a section for you....and plenty more. There is also a section for more advanced topics ranging from RAID, Logical Volume Management, etc.

Our only guidelines to posting topics and or comments are as follow:

* Please post topics under their appropriate category.
* No spamming allowed.
* Please be respectful of others when posting topics / comments.
* Racially offensive, abusive, obscene, profane or otherwise socially unacceptable language, literal or implied, and pejorative name-calling (expressed or implied) are prohibited at all times.
8

Petros Koutoupis
owner

LAN & SAN Storage  - 
 
An interesting read....
9
3
Petr Moses's profile photoArmando Atanacio's profile photo
Add a comment...

Petros Koutoupis
owner

Discussion  - 
 
 
GNOME Disk Utility 3.17.2

The GNOME Project released version 3.17.2 of Disks, better known as GNOME Disk Utility.

http://www.itrunsonlinux.com/desktopos/gnome-disk-utility-3-17-2/
1 comment on original post
1
Add a comment...

Scott Westlake

Software Defined Storage  - 
 
Summary:Red Hat Gluster Storage with OpenStack Manila technology preview gives enterprises software-defined file storage for OpenStack clouds.
4
 
I want to move data from 5 LUNs on to other bigger 5 LUNs on same server. The 5 LUNs are setup as a different VG on each LUN using LVM.

What's the best method? dd or cp?

As I think, I see dd is safer option for preservation of ownership, timestamp and mode (rights), and being able to recurse the operation.

However, if I create replicas using dd, will I be able to mount both filesystems at same time, or they will cause conflicts under LVM with same IDs?

Also, at this point, I am not concerned about the performance. It is ok if it takes another hour extra to copy.
1
Gordan Bobic's profile photoAnders Jackson's profile photo
8 comments
 
Why move with dd, cp or rsync?

Add the new physical device to the vg and move all data from the old pd to the new pd. Remove the old pd.
Finnished.

Or did i missed something?

If you actually want to copy, rsync should do the work.
Add a comment...
 
Hi Group

How about resizing a partition on a live server?
In fact, I need to extend a PV but it's located on a partition of /dev/sda, currently /dev/sda5.

I have to delete the partition (from parted or cfdisk or fdisk, extend it on the free space (vmdk already extended) and resize it to allow the pvresize to take place.
The systems already sees the additional space (echo 1 > /sys/bus/scsi/devices/2\:0\:0\:0/rescan)

But.... it doesn't seems that safe on a running machine (Some 200 users are connected now ...). Would a vmware snapshot help restore the before state in case of failure?

If not, I'll change the mount point on another volume and rsync that

Thanks for any advice, experience


(also posted on +Debian  help section.)
Thanks group
1
Petros Koutoupis's profile photoJulien Lambot's profile photo
6 comments
 
+Petros Koutoupis thanks for your comment.
The thing was to keep same partition (sytem, data, DB,...) on specific datastores. I've made added another pv and moved and extended the lv onto it.
Add a comment...

Petros Koutoupis
owner

Data Backup & Recovery  - 
 
Teknixx originally shared to Linux Software:
 
Here some of my favorites Linux Backup Tools

#linux   #sysadmin   #backup  
Linux backup tools, A good plan b (backup) is essential in order to have the ability to recover from human errors, RAID or disk failure, File system...
View original post
8
6
Ricardo Saraiva's profile photoNeg-Ocios COM (negociosyocios)'s profile photo
Add a comment...

Petros Koutoupis
owner

File Systems  - 
2
satish y's profile photoPetros Koutoupis's profile photo
2 comments
 
+satish y Of course. One scenario that comes to mind is a file server. How often do individual make the mistake of storing multiple copies of the same file or picture? I am guilty of that myself.
Add a comment...

Petros Koutoupis
owner

Security & Encryption  - 
2
satish y's profile photoPetros Koutoupis's profile photo
2 comments
 
+satish y All types of encryption should reduce performance on all workloads. That is, the type it takes to encrypt/decrypt the data blocks in question.
Add a comment...

Petros Koutoupis
owner

Portable Storage  - 
 
Just a bit of humor here....
 
Couldn't decide - should this go under "Curiosities" or "Portable Devices"?
Large in physical size, not in storage capacity. Computer enthusiast Christopher Parish modified a vintage “DEC RL02” drive—as big as a decent PC case—from the 70s so it can connect to modern PCs via USB. Technically this might be the largest and the heaviest USB storage device in the world.
6 comments on original post
1
Add a comment...

Petros Koutoupis
owner

Discussion  - 
 
Yes...I know this is not related to data storage but it is a neat reference site.
 
Generate your fancy .bashrc PS1 prompt easily with a drag and drop interface http://bashrcgenerator.com/?twitterID=nixCraft   #unix #linux #osx  
2 comments on original post
6
2
Julien Lambot's profile photoDACBARBOS Media's profile photo
 
Excellent !
Add a comment...

About this community

Open Source Topics on Volume Management, RAID, File System, Data Backups, High Availability, Storage Area Networks (SAN), Network Attached Storage (NAS), Virtualization, Cloud Computing, Clustering, and many more; as it relates to Linux, *BSD, Solaris, Windows, and more.
Chicago, IL

Scott Westlake

Discussion  - 
 
How do you copy the entire contents of a folder to an already existing folder?

All contents of /etc/skel/ (including dot folders) must be copied to a user's home directory.  Assuming the command current location is at the user's home directory and the bash shell is used, which then would be the correct choice?
347 votes  -  votes visible to Public
cp -R /etc/skel/{.*,*} .
8%
cp -R /etc/skel .
46%
cp /etc/skel/* /etc/skel/.* .
9%
cp -R /etc/skel/{.*,*} ./
6%
none
32%
3
4
Sam Martinez's profile photomiguel rodriguez's profile photoAlexander Nikitin's profile photoPaul Johnston's profile photo
7 comments
 
cp -a /etc/skel/* ./
 
 
Major release!

RapidDisk / RapidCache 3.0 now available. The changelog can be found here: http://rapiddisk.org/index.php?title=Main_Page#Changelog

This release includes the following updates:

* Added NVDIMM support.
* Added RESTful API support.
* Updated administration binary and cleaned up a lot of its code.
* Removed pyRxAdm graphical wrapper.
* Fixed bug when erroring during RapidCache module insertion.
* Cleaned up RapidCache module code (removed procfs entry).

You can pull it from the git repo: http://rapiddisk.org/index.php?title=Main_Page#Downloads_and_Installation or download it from the SourceForge project page: http://sourceforge.net/projects/rxdsk/
View original post
3
Add a comment...

Emmanuel Florac

Cloud Computing  - 
 
How do Toshiba hard drives perform compared to other popular hard drives from Seagate, Western Digital and Hitachi? Backblaze puts them to the test.
3
Add a comment...

45 Drives

Discussion  - 
 
Familiar with +LinusTechTips ? For Big Data storage... "It's all about high-speed accessibility" -  His #Storinator  is currently being used to store his entire video data archive of 100TB. Would love to get a discussion on this!
2
1
Johannes Thumshirn's profile photo
Add a comment...

Petros Koutoupis
owner

File Systems  - 
2
Add a comment...

RapidDisk (rxdsk)

Advanced Storage Management (RAID, LVM & more)  - 
 
 
RapidDisk / RapidCache 2.13 now available. Not a huge update here:

* Bug fix with rxadm binary and mapping RapidCache to pre-existing partitions.
* Added more information to RapidDisk proc_fs file.
* Addressed compile warnings for GCC 5.1

Also, this code has been tested on the 4.0 kernel.

Thanks go to Steven Rudolph for finding the bug and testing the fix. 

You can pull it from the git repo: http://www.rapiddisk.org/?page_id=7

Or download it from the SourceForge project page: http://sourceforge.net/projects/rxdsk/

#linux   #kernel   #development   #opensource   #ubuntu   #centos   #redhat  
Software. If what you are looking for is not listed here, please visit our Documentation Wiki. RapidDisk / RapidCache. Download and installation. You can clone the latest (and stable) 2.x source tree from the git repository: $ git clone http://git.rapiddisk.org/rxdsk-2.x.git ...
View original post
1
satish y's profile photoRapidDisk (rxdsk)'s profile photo
2 comments
 
+satish y No dedup.
Add a comment...

Petros Koutoupis
owner

Cloud Computing  - 
 
An interesting piece....
 
Post PC, post Office, post Windows era hits Microsoft hard as revenues on Azure and Office 365 rises.
1 comment on original post
3
Michael Bellerue's profile photo
 
Yup, it's all our fault that Microsoft forced a tablet interface on the already dwindling desktop and laptop markets. Make a stupid move? Just blame the consumers for knowing what they like. Well played, Microsoft. Well played.

Also, why do people continue to choose Azure IaaS when there are far better alternatives out there?
Add a comment...