GM All,
Yesterday Minerva had a problem on one of their Unix servers. You could
not write to disk. On the surface this doesn't seem like anything more than
an inconvenience. However, I really got burned.
I have many applications - such as a guestbook - where I read the file,
make modifications, delete the old file and write the new one with the same
name. In this situation, the delete worked but the write didn't.
This could happen if there is no disk space remaining on your providers
machine.
There are at least two way to at least partially protect yourself. Write
the file to a temp name before deleting the original and then rename. Use a
crontab job to make backup copies of vulnerable files. You can have the
crontab job run unattended as often as you like.
Urb
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