Trouble rebuilding array on 3ware 7000 (twe)
From: Matt Staroscik (matt_at_wrongcrowd.com)
Date: 11/09/04
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Date: Mon, 08 Nov 2004 23:14:42 -0800 To: freebsd-questions@freebsd.org
I need a hand from a disk guru as I am having some problems with a 7000-2
mirror under 4.10.
My 3ware Escalade 7000-2 has a pair of Maxtor 160GBs on it. I run them
mirrored. The other day, a drive bit the dust. As the disk was well and
truly hosed according to the Maxtor utilities, I chucked it and dropped a
replacement into the RAID. The replacement disk was the exact same Maxtor
model. (these were all cold swaps by the way, no hot swap cages here yet.)
At boot I hit alt-3 to get into the 3ware BIOS and I started the array
rebuilding. All seemed well. The 3dm web page indicated a rebuild was in
progress. Disks were chugging.
After a few minutes, the rebuild stopped and the web page showed "error."
The console showed unhelpful twe0 Disk Error and Rebuild Halted messages.
At this point I decided to play it really safe. I dropped a spare drive
into a non-3ware IDE bay and proceeded to save off dumps of all the
filesystems. All was well except for a few read errors on /usr. These were
accompanied by a message about a twe controller failure with error 0x40.
I rebooted into single-user, ran fsck -fy and tried the /usr dump again.
There were less errors, but there were still 2 bad blocks, with the same
error code.
At this point, the system runs but I have a degraded mirror (with its own
errors) that I cannot rebuild, and I am not sure why.
- Is it still the case that a 7000-series 3ware cannot successfully rebuild
under FreeBSD? I found year-old mailing list traffic that mentioned this,
and suggested a Knoppix Linux live CD as a workaround.
- Or, are the errors on the source drive killing the rebuild process?
- How can I fix the errors in /usr? I ran fsck -fy in single user mode,
what else can I try?
Many thanks in advance for your ideas. With half a RAID I am running on
borrowed time. At least a SMART probe of the remaining drive only shows 2
errors!
Best,
Matt S.
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