Re: mpt2sas logged messages

[Greg KH <greg@kroah.com>]

On Tue, Aug 18, 2009 at 09:18:30AM -0400, Ric Wheeler wrote:
> 
> We have a new toy to test very large & slow storage with built up from 5 
> SAS expansion shelves (Promise Vtrak J-Class) with 60 S-ATA drives and 
> 16 SAS drives (the S-ATA drives each have a Promise Vtrak S-ATA MUX 
> adapter daughter card in the disk sled).
> 
> The basic idea is to build a cheap & slow test bed for file & storage 
> system scalability. Collectively, we have about 120TB (raw) of capacity 
> to play with in one server.
> 
> As we work through various issues, a couple of oddities popped out.
> 
> The first is that udev grumbles during boot about "file name too long" 
> like the following:
> 
> Aug 17 06:49:58 megadeth udevd-event[20447]: unable to create db file 
> '/dev/.udev/db/\x2fdevices\x2fpci0000:00\x2f0000:00:04.0\x2f0000:17:00.0\x2f0000:18:0a.0\x2f0000:1f:00.0\x2fhost11\x2fport-11:0\x2fexpander-11:0\x2fport-11:0:0\x2fexpander-11:1\x2fport-11:1:0\x2fexpander-11:2\x2fport-11:2:17\x2fexpander-11:3\x2fport-11:3:1\x2fend_device-11:3:1\x2fbsg\x2fend_device-11:3:1': 
> File name too long

Odd, what is the sysfs tree for this device?  You have expanders
attached to ports attached to expanders?  How deep can you go?

thanks,

greg k-h