Re: [zfs-discuss] Zpool scrub in cron hangs u3/u4 server, stumps tech support.
On Tue, 17 Feb 2009, Elizabeth Schwartz wrote: Sun support threw up their hands and said to install Solaris 10 u6, which I'm not really happy about doing as a bug fix to a production server running a supported version of Sun OS. Once Upon a Time, Sun used to offer *patches* to paying customers for operating system bugs. I quote the latest ticket note in disgust: I really don't know what to tell you. S10u6 has many enhancements and improvments to zfs, but most can be gained though patchs with the exception of new features. You should investigate the use of Live Upgrade to upgrade your server to Solaris 10U6 with absolute minimal down-time. Patching only goes so far, and the version you are using is quite old. Bob -- Bob Friesenhahn bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Zpool scrub in cron hangs u3/u4 server, stumps tech support.
It's an old version but it's a *supported* version and we have a five-figure support contract. That used to matter. I've never used Live Upgrade; I want to try it out but not on my production file server, and I want to know that this particular bug is fixed first, something more definite than many improvements ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Zpool scrub in cron hangs u3/u4 server, stumps tech support.
On Wed, 18 Feb 2009, Elizabeth Schwartz wrote:
It's an old version but it's a *supported* version and we have a
five-figure support contract. That used to matter.
I can understand your frustration. ZFS in Solaris 10U3 was a bit
rough around the edges. It is definitely improved in later releases.
I've never used Live Upgrade; I want to try it out but not on my
production file server, and I want to know that this particular bug is
fixed first, something more definite than many improvements
As long as you have spare bootable partitions, Live Upgrade is
exceedingly useful. It allows you to create a new boot environment
with the newer Solaris installed, and with all of your local changes
applied. You can double-check to make sure that everything is ready
to go via a mount to the new boot evironment. Switching to the new
boot environment is as simple as 'luactivate' followed by a reboot.
It is likely to work first time, but if it does not, you can reboot to
your previous boot environment for minimal server down time. If you
are using Grub, then each boot environment is listed in the Grub boot
menu.
With proper care, using Live Upgrade is safer (and faster) for
production systems than applying large numbers of patches spanning
many Solaris 10 generations. You can also use multiple boot
environments to apply patches, in order to minimize risk and minimize
down time.
If you are able to install Solaris 10U6 with ZFS boot, then subsequent
Live Upgrades should be far easier since boot evironments are
directories in the root pool ('rpool') rather than in dedicated
partitions.
Bob
--
Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,http://www.GraphicsMagick.org/
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Re: [zfs-discuss] Zpool scrub in cron hangs u3/u4 server, stumps tech support.
Bob is correct to praise LiveUpgrade. It's pretty much risk-free when
used properly, provided you have some spare slices/disks.
At the same time, I'd say that this is probably an appropriate time to
escalate the bug with support - the answers you are getting aren't
satisfactory.
I would also consider creating a user/role with zfs admin privileges
only, and trying to run the scrub command from cron as this user - I
had a similar problem with an old ZFS version which I worked around by
issuing commands as a user other than root.
On Wed, Feb 18, 2009 at 12:44 PM, Bob Friesenhahn
bfrie...@simple.dallas.tx.us wrote:
On Wed, 18 Feb 2009, Elizabeth Schwartz wrote:
It's an old version but it's a *supported* version and we have a
five-figure support contract. That used to matter.
I can understand your frustration. ZFS in Solaris 10U3 was a bit rough
around the edges. It is definitely improved in later releases.
I've never used Live Upgrade; I want to try it out but not on my
production file server, and I want to know that this particular bug is
fixed first, something more definite than many improvements
As long as you have spare bootable partitions, Live Upgrade is exceedingly
useful. It allows you to create a new boot environment with the newer
Solaris installed, and with all of your local changes applied. You can
double-check to make sure that everything is ready to go via a mount to the
new boot evironment. Switching to the new boot environment is as simple as
'luactivate' followed by a reboot. It is likely to work first time, but if
it does not, you can reboot to your previous boot environment for minimal
server down time. If you are using Grub, then each boot environment is
listed in the Grub boot menu.
With proper care, using Live Upgrade is safer (and faster) for production
systems than applying large numbers of patches spanning many Solaris 10
generations. You can also use multiple boot environments to apply patches,
in order to minimize risk and minimize down time.
If you are able to install Solaris 10U6 with ZFS boot, then subsequent Live
Upgrades should be far easier since boot evironments are directories in the
root pool ('rpool') rather than in dedicated partitions.
Bob
--
Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,http://www.GraphicsMagick.org/
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