On Tue, 25 Oct 2005, Palle Girgensohn wrote:
A customer has a machine with four disks in RAID 10 using the ida(8)
controller on FreeBSD-4.11.
ftp://ftp.jurai.net/users/winter/idacontrol.tar would solve a few of your
problems on 5.x or better but getting it to work on 4.x requires patching
and recompiling.
Now one disk is broken. I have some questions:
1. How can I detect that a disk in a raid cluster is broken? It seems
natural to me that the raid driver would log info about a broken disk,
but I have not seen this happen with any raid controller driver.
Most array drivers have a userland utility that allows inspection of array
status. The utility for ida(4) isn't in the base system yet.
2. The system is extremely slow and hardly usable right now. The
customer are still waiting for a replacement disk. Is there any way to
get the system to just ignore the broken disk instead of trying to use
it and fail. I get thousands of "ida0: soft error" in messages log. If
the system would realize that it had problems with the disk, and ignore
them, perhaps it wouldn't become unsable,
Well, you could rate-limit the error messages, or comment out the message
entirely.
3. Will the array rebuild automatically once they insert the new disk?
Depends on the BIOS setting.
--
Lord, wheresoever this rifle goest, guide my hands upon it.
Let a shot never be fired in anger or error.
Bless it to your righteous service.
In your mercy, Thine is the kingdom Amen.
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