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."
--
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