[opensuse] Fault tolerance in Linux Disk I/O
Ken you may be the only one who can shed any light on my question as it is difficult and needs an answer from a long standing UNIX/Linux user. That being said anyone else who knows the answer or can contribute please jump in Linux coming from a Unix Server now being a desktop solution I was wondering what fault tolerance there is in respect to verifying reads and writes to the HDD or NFS Server. Some server O/S employ HOTFIX to ensure a file is written correctly to the hard Disk and Transitional Tracking. Are any of these left over in a Linux Workstation. This goes with my question about verification of files. I was faithfully backing up my /home directory and sub-directories and list my entire system which was my fault and a long story. When it came to recover the backup achieve the achieve header had been corrupted. I used KDAR to do the backup and it has no verify options and KDAR could not read the achieve file. My question to you is are there in inbuilt file integrity listed above to ensure every write and read are performed actually and checked by any O/S fault tolerance systems Regards to all Scott
On Thu, 2006-11-02 at 14:14 +1000, Intrusion Detection Account 000 wrote:
Ken you may be the only one who can shed any light on my question as it is difficult and needs an answer from a long standing UNIX/Linux user. That being said anyone else who knows the answer or can contribute please jump in
Linux coming from a Unix Server now being a desktop solution I was wondering what fault tolerance there is in respect to verifying reads and writes to the HDD or NFS Server.
Some server O/S employ HOTFIX to ensure a file is written correctly to the hard Disk and Transitional Tracking.
Are any of these left over in a Linux Workstation. This goes with my question about verification of files.
I was faithfully backing up my /home directory and sub-directories and list my entire system which was my fault and a long story. When it came to recover the backup achieve the achieve header had been corrupted. I used KDAR to do the backup and it has no verify options and KDAR could not read the achieve file.
My question to you is are there in inbuilt file integrity listed above to ensure every write and read are performed actually and checked by any O/S fault tolerance systems
I tried to use kdar and had nothing but problems with it. I think the problems you experienced are with the application kdar and not with the linux system it self. If _reliable_ backups are a must I suggest using a commercial backup program like Microlite BackupEdge. It employs good verification to ensure a reliable backup has been preformed. You can download a 60 day eval for free to test. -- Ken Schneider UNIX since 1989, linux since 1994, SuSE since 1998 --------------------------------------------------------------------- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
Dear Kenneth, Thank you vey much for the help abd assistance in recommending Microlite BackupEdge. I found another sophisticated application 'cpio' however due to its lack of GUI and complex switchers and syntak - this is of likke help right now If you have the time, perhaps in a private email are you able to shed some light on the above win a private email. It was a difficult ask and only probable a few would understand fault tolerance. At other times I have buck copies my working PC to an NFS Drive and similar things have happened as not even Konqueror seems not to have a verify option and things sometimes happen. I really am not after a file compare option to test files copies/written so. I need to further my understanding of the O/S I am now committed to and devotes countess hours of reading new material to learn. Just if you have time. It helps me along the road with a new O/S and stops me feeling quite so inadequate in a new environment. You probable have guessed I have been around for a long time by now in IT now arrox 25 years. I am happy if the explanation is a bunch of URL's and you write to me personally rather than clog the list of a high level descurrion Kind Regards Scott On Wed, 2006-11-01 at 23:28 -0500, Kenneth Schneider wrote:
On Thu, 2006-11-02 at 14:14 +1000, Intrusion Detection Account 000 wrote:
Ken you may be the only one who can shed any light on my question as it is difficult and needs an answer from a long standing UNIX/Linux user. That being said anyone else who knows the answer or can contribute please jump in
Linux coming from a Unix Server now being a desktop solution I was wondering what fault tolerance there is in respect to verifying reads and writes to the HDD or NFS Server.
Some server O/S employ HOTFIX to ensure a file is written correctly to the hard Disk and Transitional Tracking.
Are any of these left over in a Linux Workstation. This goes with my question about verification of files.
I was faithfully backing up my /home directory and sub-directories and list my entire system which was my fault and a long story. When it came to recover the backup achieve the achieve header had been corrupted. I used KDAR to do the backup and it has no verify options and KDAR could not read the achieve file.
My question to you is are there in inbuilt file integrity listed above to ensure every write and read are performed actually and checked by any O/S fault tolerance systems
I tried to use kdar and had nothing but problems with it. I think the problems you experienced are with the application kdar and not with the linux system it self. If _reliable_ backups are a must I suggest using a commercial backup program like Microlite BackupEdge. It employs good verification to ensure a reliable backup has been preformed. You can download a 60 day eval for free to test.
On Fri, 2006-11-03 at 00:46 +1000, Intrusion Detection Account 000 wrote:
Dear Kenneth,
Thank you very much for the help abd assistance in recommending Microlite BackupEdge.
I found another sophisticated application 'cpio' however due to its lack of GUI and complex switchers and syntax - this is of likke help right now
I have very little knowledge when it comes to using cpio. If I knew more about programming I might attempt writing a gui for it, but a programmer I am not. This is a hint to others on the list that may have the ability and time, there are many such programs without a gui that keep people from migrating to linux.
If you have the time, perhaps in a private email are you able to shed some light on the above win a private email.
It was a difficult ask and only probable a few would understand fault tolerance.
At other times I have buck copies my working PC to an NFS Drive and similar things have happened as not even Konqueror seems not to have a verify option and things sometimes happen.
One of the things I really liked about using BackupEdge was the ability to do a total restore in case a harddrive went bad. BackupEdge provides a way to boot from the backup media and restore everything. And with it doing backup verification you could be much assured ( not guaranteed ) that you had a reliable backup to work with. Another program you might look into using is tar ( a version that is supposed to work with ACL's is star ). You could create a tar file that can be burned to DVD and used for restores. Another is mondo/mindi for backups/restores. Search in google for more info on mondoarchive. Also lets keep this on the list as others may benefit from this thread and others might correct me if I give faulty info. Also please refrain from top-posting and add you comments to the appropriate place like I just did. -- Ken Schneider UNIX since 1989, linux since 1994, SuSE since 1998 --------------------------------------------------------------------- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
Kenneth Schneider a écrit :
Also lets keep this on the list as others may benefit from this thread and others might correct me if I give faulty info.
this thread seems to turn to discuss a backup strategy. This is a hot problem, with no simple solution, but concerning most of us. so The wiki should be a good point to build your reflexion on the subject, as they don't seems to be a wiki page on the subject, feel free to build one :-) (even incomplete) thanks jdd -- http://www.dodin.net http://dodin.org/mediawiki/index.php/GPS_Lowrance_GO --------------------------------------------------------------------- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
participants (3)
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Intrusion Detection Account 000 -
jdd -
Kenneth Schneider