Hi Charles,
Thanks for your input .... between everyone who graciously responded
to my question...I am gaining a much better understanding of why it
can happen that you will lose stuff in a power outage, but it doesn't
necessarily mean you will. Guess we have been the lucky ones,
as well as many others who have seen the same thing.
I enjoy learning more and more about Linux everyday. This list is
a great learning tool and I try to check the "multitudinous" daily messages
every day ....most days anyway :)
Thanks again,
Bambi
Charles Curley wrote:
> On Mon, May 29, 2000 at 02:11:13PM +0200, Denis HAVLIK wrote:
> -> :~>I am not sure what you are referring to here.
> -> :~>We had a power outage and I was all worried because
> -> :~>everyone talks about what happens when you don't
> -> :~>cleanly boot out of Linux, but it came back up fine.
> -> :~>It forces a 'scan' of the Linux partitions, but they come
> -> :~>back 'passed'.
> ->
> -> Once in a while it can happen that you have to run fsck manually and
> -> answer "yes" to all its question. It can happen that you loose a file or
> -> two in a proces -> parts of the files end-up in /lost-and-found dir.
> ->
> -> The reason for this is always the same: no journaling system, therefore if
> -> system crashes in the middle of writing a file, we have a problem. Same
> -> problem exists on vfat, I do not know about NTFS.
>
> For the record, NTFS is a journaling file system, and has been since day
> one. W2K has W32 level access to portions of it.
>
> ->
> -> This could lead to problems, If you have been editing /etc/fstab at the
> -> moment of crash, but usually it is just a minor nuisance. During last 6
> -> years, I have managed a small cluster of linux machines at university
> -> of Vienna. These machines were never shut down unless we got power
> -> problems. In this time, our building was hit by a lightning twice, which
> -> caused total electricity loss, and burn-up of some network cards. During
> -> last 2 years, there were intensive renovation works in the building, and
> -> workers have repeteately cut of power cables (network cables too,
> -> including the backbone once). All-in-all, a rather hard working
> -> enviroment, and in all this time I actually saw that few files were lost
> -> only once - did rpm -Va, and reinstalled the package.
> ->
> ->
> -> :~>We sometimes lose power here with electrical storms.
> -> :~>
> -> :~>What situation does it have to be for it not to come back?
> ->
> -> Good question. Maybe he thought "does not automatically come back again,
> -> which is something you will see every time fsck finds a problem which
> -> COULD lead to loss of some data, and refuses to work non-interactively.
> ->
> -> Btw: with onset of new yournaling filesystems (ReiserFS, ext3), this
> -> will soon be a non-issue anyway.
>
> SGI and IBM have also released journaling file systems, and they are being
> adapted to Linux. Hmmm, NT comes with two file systems, one of which is
> journaling. Linux comes with how many, of which four are or will be
> journaling? "No worries."
>
> --
>
> -- C^2
>
> No windows were crashed in the making of this email.
>
> Looking for fine software and/or web pages?
> http://w3.trib.com/~ccurley
