Re: udev VS oracleasm disk aliasing - preferences?
Date: Fri, 6 Jul 2012 11:02:58 -0400
Message-ID: <CAMVw97+z+T1WGhVzervBVmZBT8KJXpB4HyUnaiufX+6Pg4ysGA_at_mail.gmail.com>
My answer might be a bit strange but I always favored udev because it allowed not to use asmlib.
asmlib was developed in the old days mostly to overcome OS limitations. OS have improved a great deal since then and amslib lost most of its value. There is still stuff being done like minimizing a number of open file descriptors and IO coalescing (maybe something else but I don't keep a close eye on what's going on with asmlib anymore) but its just not big enough for most shops to care. Oracle certainly didn't care themselves when they built ODA -- it uses native linux multipathing (dm-mapper-multipath) for naming/load balancing/failover and no asmlib. Though I won't exclude that some exciting value-add features might be coming in the future versions ;-)
In my view udev is a lot more flexible and universal since it comes standard with any modern Linux. If I want all my iscsi devices to be under /dev/iscsi then I can easily do it with udev.
On Fri, Jul 6, 2012 at 10:45 AM, Taylor, Chris David
<ChrisDavid.Taylor_at_ingrambarge.com> wrote:
> Anyone know of any particular system or application reason to favor udev over oracleasm or vice versa?
>
> Chris Taylor
>
> "Quality is never an accident; it is always the result of intelligent effort."
> -- John Ruskin (English Writer 1819-1900)
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> Any views and/or opinions expressed herein are my own and do not necessarily reflect the views of Ingram Industries, its affiliates, its subsidiaries or its employees.
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-- Alex Fatkulin, http://afatkulin.blogspot.com Enkitec, http://www.enkitec.com -- http://www.freelists.org/webpage/oracle-lReceived on Fri Jul 06 2012 - 10:02:58 CDT