Tru64 (was: Re: MicroVAX 4000/VLC)

From: r. 'bear' stricklin <red_at_bears.org>
Date: Mon Feb 25 18:01:56 2002

On Tue, 26 Feb 2002, Jochen Kunz wrote:

> 2) a file sytem that is that fast, flexible and reliable as AdvFS[1]

er..

> [1] AdvFS is jornaled. A mounted FS can grow, shrink, be moved to an
> other disk, spreed across multiple disks to get more capacity...
> Snapshots / Clones can be taken... Remark: This are features of the FS,
> not an underlying LVM.

AdvFS ALSO has serious race conditions at least as recently as 4.0G.

This was our (the SA's) number-one huge support headache at Amazon.com for
_months_. (I think my NDA is expired by now, and anyway they're bragging
publically about being an HP shop these days). I cannot count how many
times we had to suck it up and restore filesystems from backup, because
the AdvFS had helpfully corrupted itself. At one point we were restoring
three or four filesystems a week...

Compaq was no help.

Over the course of six months and thousands of man-hours wasted due to
roached filesystems, their story went from "There are no bugs in AdvFS,"
to "We admit the existence of race conditions in the AdvFS code," to "We
fixed it in 4.0f," to "We fixed it in 4.0g," to "we still can't find the
last race conditions, we probably won't have it fixed until 5.0."

No thanks.

Not on topic, anyway, since this was mid- to late-1999.

ok
r.
Received on Mon Feb 25 2002 - 18:01:56 GMT