>>>>> "Jakub" == Jakub Otwinowski <kuba@xxxxxxxxxxxxxxxxxxxxxxx> writes:
Jakub> long story: I installed the system with the xfs redhat 7.1
Jakub> installer. It took very long, almost 2 hours.
This is usually the case when the 3ware controller is busy resyncing
the disks.
You can't really tell, because they don't ignite the drive LED during
resync, but the disks are indeed churning. And you can't tell how far
along the the resync process it is either. Most annoying.
It takes 3 hours+ here to resync a RAID1 with two 60GB disks, and the
machine is completely unusable during this period. Despite the fact
that I have given host I/O priority over resync.
In your case with 8 80GB disks in a RAID5, that is likely to take a
significant amount of time to sync. Hours and hours. Perhaps even
days if you're doing I/O on the box simultaneously.
I initially used a 3ware in a development box, but the firmware forces
a resync every time you haven't shut down the machine cleanly. So
after a hang my box would be stalled for hours. I ended up ripping
out the 3ware and put it on the shelf where it belongs.
And given the recent reports about bad voodoo with Escalade 6800 and
RAID5, I wonder why people still bother with these cards...
--
Martin K. Petersen, Principal Linux Consultant, Linuxcare, Inc.
mkp@xxxxxxxxxxxxx, http://www.linuxcare.com/
SGI XFS for Linux Developer, http://oss.sgi.com/projects/xfs/
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