DiskSuite metatrans device vs. ufslogging
Hello,
I've a Solaris 8 system (2/02) with solstice Disk Suite running on it. I want journaling on it's filesystems to avoid filesystem crashes.
I'm using solaris ufslogging feature on machines without disk management software, so I would like to use ufslogging on the machines with disk suite to have similar configurations on all the hosts. I also would like not to "waste" slices on metatransdevices for logging (i'm not using soft partitions).
This way, my idea was to use ufslogging with the filesystems created over disksuite's metadevices. Is this configuration OK and recommended? Pros and Cons of both approaches?
Thanks in advance,
jmiturbe
[699 byte] By [
jmiturbe] at [2007-11-25 23:24:23]
# 1
Hi,
What you can do is when you create the partition for the meta-devices, create it a bit bigger (8-10m) and use this for the trans metadevices *as well as* metadevices.
As for the trans metadevice vx ufs logging, I presume it would be OK. It's just another level of logging at another layer. We use this wil Veritas (e.g. Raid 5 with log, and vxfs with logging on top).
# 2
AFAIK, the code for UFS logging in Solaris 7 and above is exactly the same code used for trans metadevices in SDS; so, you won't have any problems using UFS over metas.
As already said, the only difference between UFS and trans is the level where the logging is done. In the first case, UFS operations are logged; in the second, metadevice operations are logged.
[]'s
Paulo Fessel
