Tag: SUSE

How to Fix Unable to resolve UUID Error in Linux

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Modern distributions of Linux operating systems use UUID (Universally Unique Identifier) to uniquely identify hard drive or other data storage devices, in place of the conventional block names like /dev/sdb and /dev/hda1. It is due to the fact that UUID is never modified, even if the hard drive is switched. It is stable as compared to traditional methods, and prevents system failure and need of Linux Data Recovery solutions.

UUID is a 128-bit string that is used for making the Linux hard disk management simple. If you look at /etc/fstab file in your Linux computer, you find the entry in the following format, in place of the familiar hard drive designation:

UUID=62fa5eac-3df4-448d-a576-916dd5b432f2

In comparison to the traditional hard drive identification techniques, UUID is quite easy and reliable. For instance, in the traditional Linux systems, when you try to insert a new hard drive in a system that already has two hard drives, the drive is inserted between existing drives. At this point, ‘mount’ command attempts to mount the newly inserted drives as home.

In such situation, you need to log on as a single user for resolving the problem. However, when you log on, it gives you some error message and in the worst case scenario, you may encounter kernel panic. You can fix this issue using UUID.

UUID creates a unique entry for each hard disk volume in the Linux file system tree. Using UUID offers easy management of your Linux hard disks and creates less complication while adding or removing the disk.

Although, UUID is quite useful and it provides various advanced features, but it also has some faults. Sometimes, you may encounter the below error message when you attempt to access a UUID based Linux hard drive:

-Fsck 1.40.8 (13-Mar-200 fsck.ext3: Unable to resolve ‘UUID=d8533154-cef1-4cce-a823-9f3f74aab65b’-

After the above error message, you can not access the particular hard drive. All the data stored on your hard drive become inaccessible and you come across critical data loss. At this point, Linux Recovery Software come for your rescue.

The applications perform absolute Data recovery linux in most of the logical data loss situations, using advanced scanning algorithms. These tools enable you to perform Linux Recovery on your own as they have self-descriptive and simple graphical user interface. With read-only and non-destructive behavior, the applications are completely safe to use.

Stellar Phoenix Linux Data Recovery is the most comprehensive application for perfect recovery of all lost data. The software is compatible with all Linux distributions including SUSE, Debian, Red Hat, and Fedora. It recovers lost data from Ext4, Ext3, Ext2, FAT32, FAT16, and FAT12 file system volumes.

SUSE Linux Enterprise ties up with Unisys

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To support the requirements of mission-critical solutions with the flexibility of virtualized environments and the security, scalability and predictable performance of Unix solutions, SUSE and Unisys Corporation(NYSE:UIS) have announced their partnership to offer enterprise customers worldwide the benefits of Forward! by Unisys. The new platform, when combined with SUSE Linux Enterprise Server and SUSE Linux Enterprise High Availability Extension, will provide an extremely flexible and cost-effective environment for running critical business applications and workloads for Unix migration, Cloud and Big Data.

Nils Brauckmann, President and GM of SUSE, said, The next phase of our strategic alliance with Unisys will bring even greater benefits to organizations needing a cost-effective Linux platform for mission-critical workloads in the cloud, managed services or anything previously run in a Unix environment.

Dominick Cavuoto, President, Unisys Technology, Consulting and Integration Solutions stated, -SUSE shares Unisys’ vision for the evolution of mission-critical computing, and we are pleased to have them as a key partner in the breakthrough Forward! Initiative. Our alliance with SUSE will be key for supporting SAP and other strategic enterprise applications for clients on the Forward! platform.- said Dominick Cavuoto, President, Unisys Technology, Consulting and Integration Solutions.

This architecture, based on Linux and the Intel x86 platform, is expected to bring unique enterprise-level security, availability, scalability and predictable performance to address key IT challenges facing enterprises today.

Interrupted Process of GParted Cause Superblock Corruption and Data Loss in Linux

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In Linux operating system, GPT (GParted) is a useful tool that facilitates you to create, resize, move, delete, copy and check the hard drive partitions/volumes. It also copy file system on newly created partitions. It is helpful to create space to install new operating system, copying data stored on hard drive, mirroring one volume with another and recognizing disk usage. In some cases, using this tool may become problematic. It might damaged Linux superblock and lead to critical situations of system inaccessibility and possibly data loss. At this point, you are required to opt for Linux Data Recovery to get your precious and business-critical data back.

Sometimes, when the disk resizing, copying or any other GParted process is running, few read/write errors might terminate the phenomenon. Subsequent to this serious incident, your hard drive volumes could not mount and you come across a number of error message. In such circumstances, when you run the fsck utility after rebooting the system to check integrity and consistency of file system and hard drive, conditions could remain same. Situation becomes critical on every attempt to fix this issue. Linux operating system superblock may get damaged and give you that indication through following error message:

“superblock corrupted, run with -b 32768”

Superblock is a metadata structure of Linux operating system that keeps record of all file system characteristics such as size, block size, empty and filled blocks, respective counts, location and size of Inode tables, size of block groups, disk block map and the disk usage information. When it gets damaged, you can not access data from your hard drive and Data Recovery Linux is required.

Linux file system keeps redundant copies of the superblock. You can correct the problem by using any of them. You can search and use an alternative superblock with the help of ‘mkfs -n’ command.

If the above method can not help you to sort out the issue, Linux Recovery is the way to go for successful retrieval of your valuable data. Recovery is potential through advanced third-party applications, known as Linux Recovery Software.

The tools powerful and efficient scanning mechanisms to methodically scan whole hard drive and extract all of the lost, missing or inaccessible data from it. With read-only conduct and rich graphical user interface, the software are pretty safe and easy to use.

Stellar Phoenix Linux Data Recovery is an advanced and robust application for assured recovery in all data loss situations. The software recovers data from Ext4, Ext3, Ext2, FAT32, FAT16 and FAT12 file system partitions. It works well with most major distributions of Linux including Debian, SUSE, Red Hat, Fedora and Mandriva.

Manika Batta a student of Mass Communication doing research on Linux data recovery software. He is also a freelancer for http://www.data-recovery-linux.com/

Linux Data Recovery Using ‘myrescue’ Utility

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In Linux operating system, myrescue is an utility to retrieve still-readable information from damaged hard drive. This Linux Data Recovery tool is similar to the dd_rescue, however it attempts to quickly get out of corrupted area to handle undamaged part first. After extracting data from the undamaged area, the utility then returns to the damaged area and tries to fix it.

The myrescue utility attempts to copy your hard drive block-wise to the file and creates a block bitmap (table) remarking whether the block is successfully copied, not handled yet or it has errors. The block bitmap or table can be employed in the successive runs for concentrating on unresolved blocks.

This Data Recovery Linux utility effectively handles the read errors, through its special skip way. General the hard drive surface blemishes cover more than simply one data block and uninterrupted reading data from the defected areas may damage the hard drive surface, the hard drive mechanisms, and read/write heads.

When it occurs, the possibilities of retrieving the remaining and undamaged data decreased dramatically. Therefore in the skip mode of myrescue, it attempts to escape the damaged area quickly by exponentially incrementing the step size. It marks the skipped blocks as un-handled in block bitmap table and they may be retrieved at later stage.

Ultimately, the utility has an advanced option to multiply attempt for reading data from a data block, before believing it is damaged.

However, you should bear in mind that this utility is not a replacement for third-party data recovery utilities. When you have a second option, do not even try to use myrescue, as the tool may cause more damage to your hard drive.

The myrescue utility is available only for the situation that you’re completely desperate and cannot afford any professional Linux Recovery utility. If your data is highly significant for your business, it is worth to go for professional recovery applications.

The Linux Data Recovery softwares are able to handle all types of data loss situations, ranging from simple deletion to the most severe file system corruption. These applications carry out in-depth scan of entire Linux hard drive and extract all lost, missing and inaccessible data from it. It comes equipped with simple and efficient GUI, to allow you to carry out Do It Yourself recovery.

Stellar Phoenix Linux Data Recovery is the most familiar and powerful program that ensures absolute recovery of all your lost data. The software recovers data from Ext4, Ext3, Ext2, FAT12, FAT16, and FAT 32 file system volumes. It is compatible with all major distributions of Linux operating systems including SUSE, Debian, Red Hat, and Fedora.

The Journey to a Linux Desktop

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As the holidays approach and we wind down to the end of the year, we all tend to look back on our accomplishments. This year, I am reminded that I am approaching the one-year anniversary of my move to a Linux desktop. For those of you who really want to learn Linux, I hope my experiences will help you take the plunge in 2010!

What prompted my move: I needed a more powerful laptop. I had my personal laptop configured as a dual-boot machine ever since Novell bought SUSE. Dual-boot is fine, but in my haste to get things done, I would inevitably drop back to Windows … and that just wasn’t working out well. Time to dig in, work through the issues, and find new, powerful applications that ran on Linux.

The hardware: Last year’s holiday season yielded some great deals. While I could have bought a new system with Linux installed so that driver availability would be guaranteed, I decided to take a gamble and buy a Dell Studio 15 off the shelf at Staples and work through any driver issues I might encounter. This unit has a 64 bit processor, a 320G hard drive, and 4G of RAM.

Driver issues: While SUSE Linux Enterprise Desktop 10 SP 2 ships with a great many drivers (including loads of printer drivers), I had two problematic pieces off hardware: the ATI graphics card and the Broadcom wireless card. After lots of searching, I finally found the best answers for my issues at www.opensuse.org. If you go the Ubuntu route as many people do, the Ubuntu forums will be your best resources.

* For information on how to install Broadcom wireless drivers on SUSE please see: http://en.opensuse.org/SDB:Broadcom_(BCM4306)_WLAN_Installation_under_SUSE.

* For information on dealing with ATI’s graphics cards, please see: http://en.opensuse.org/Ati.

* For a list of models and hardware compatible with SUSE, please see: http://en.opensuse.org/HCL or http://www.suselinuxhcl.org/.

Software replacement: One of the main reasons people avoid moving to Linux is that many pieces of commercially-available software are written only for Windows. There has been more movement to write for the Mac, but Linux support can lag behind. Enter the open source community. I found some great replacements for software I use regularly … and some of it actually works better than the Windows versions I had been using! Here are just a few of the applications I am currently running:

* Office Productivity Suite: If you have not looked at OpenOffice recently, you should definitely take some time to explore! The 3.0 version is greatly improved. I have been able to do most of what I need with OpenOffice, and actually like the Calc program better than Excel. SUSE also comes with Acrobat Reader and Planner (a project management program) already installed.

* Photo Editing: Gimp is included with SLED and does everything I would have used Paint for, and more.

* Diagrams: For the more advanced Visio functions, check out Dia. If you just need to do a flowchart or some other simple diagrams, I recommend using Draw in OpenOffice.

* Multifunction Printer Software: HP has some great tools included with their Officejet All-in-One printer/scanner/copier/fax machines. While I found the printer drivers for my unit (a 7410) included with SLED, I really wanted some of the more advanced functions (for example, scan to PDF) that I had on Windows. Enter the HP Toolbox found at http://hplipopensource.com/hplip-web/index.html. When this program installs, it uses xsane for scanning documents to image files for PDF. I got all of the functions I needed … plus, I no longer get those annoying update messages from Windows!

* Broadband Wireless: OK, I know this is actually hardware, but when I migrated I could not find a version of Verizon’s VZAccess Manager to connect the card. After a bit of digging, I found that I could configure the card as a modem (which it is) and use Kinternet as my dialer. Quick and simple and no need to install more software. A quick search at www.google.com/linux should get you the answers you need for your card. If not, instead of putting in the card name, try searching on “EVDO card.”

As I mentioned at the beginning of this article, I have been working with this laptop since last December and absolutely love it. The only way to truly learn Linux is to work with it every day. If you are bored over your Christmas break and want to play, give Linux a try. I will never go back!

Copyright 2009, Uptime NetManagement, Inc.

Donna Moyer is Principal/Senior Network Consultant of Uptime NetManagement, Inc. (http://www.uptimenmi.com/). Uptime is a Novell Gold Solutions partner providing technology solutions, customized training, and consulting services. If you are interested in finding out exactly what Novell can do for your business, or are seeking to maximize the benefits from your current Novell systems, call us today at 610-621-1244!