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Old 08-04-2007, 09:51 AM   #1
owendelong
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Registered: Mar 2005
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Myricom 10GE install breaks mdadm autodetection


System: iX Systems SuperMicro-based 2U server 3Ghz Dual Core Intel Processor, 4GB RAM
Distro: Fedora Core 7

Before:
3 SATA disks.
160GB sda contains OS, swap non-raid
2*750GB sdb, sdc each configured as a single type fd partition

Raid 0 array created across sdb1, sdc1 and was working, with autodetection fine.

After:
Installed myricom 10GE card
System boots fine.
mdadm -A /dev/md0 /dev/sdb1 /dev/sdc1 will start the array with no errors.
mdadm -A /dev/md0 --scan fails claiming "no devices for md0"

If I start the array by hand, it is readable and the FS is in tact.

I have added lines to mdadm.conf to specify the physical devices, but, that hasn't
helped.

I have not yet tried removing the Myricom card to see if that resolves the issue, as I
would prefer to get this all working together.

Unfortunately, I can't hand-assemble the raid volume in maintenance mode and then
get the system to come the rest of the way up because when I exit maintenance mode,
it reboots.

Given that I'm able to read the array if I specify the device, I expect it must be possible
to fix the autodetection, but, I have no idea how to do so.

Any tips/pointers greatly appreciated.

Thanks,

Owen
 
  


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fedora, mdadm, raid, sata


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