On 7/26/2016 2:38 PM, Peter wrote:> On 27/07/16 09:11,m.roth at 5-cent.us wrote: >> >This is... odd. Got a 6.8 box, a Dell R320 lspci tells me >> >01:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 2008 >> >[Falcon] (rev 03) >> >so it*should* accept an SAS drive. I've got a Cheetah that's a few years >> >old, and having pulled it out of another server (in the datecenter), I put >> >it in this box to zero it out for reuse... and the box refuses to see the >> >drive.*Nothing* in dmesg,*nothing* in /var/log/messages, and I tried >> >echo "0" etc to get the SCSI buses to rescan. >> > >> >Anyone have any ideas? > That's a hardware RAID controller, so it won't (by default) see single > drives and pass them directly to the OS like a normal disk controller > would. You need to go into the RAID config (you should see an option to > do this at boot) and configure a RAID with a single disk in a RAID0 > configuration.or use the MegaCli from linux to do the same, but the syntax is nasty -- john r pierce, recycling bits in santa cruz
John R Pierce wrote:> On 7/26/2016 2:38 PM, Peter wrote: >> On 27/07/16 09:11,m.roth at 5-cent.us wrote: >>> >This is... odd. Got a 6.8 box, a Dell R320 lspci tells me >>> >01:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS >>> 2008 [Falcon] (rev 03) >>> >so it*should* accept an SAS drive. I've got a Cheetah that's a few >>> years old, and having pulled it out of another server (in thedatecenter), I>>> put it in this box to zero it out for reuse... and the box refuses to see >>> the drive.*Nothing* in dmesg,*nothing* in /var/log/messages, and Itried>>> >echo "0" etc to get the SCSI buses to rescan. >>> > >>> >Anyone have any ideas?>> That's a hardware RAID controller, so it won't (by default) see single >> drives and pass them directly to the OS like a normal disk controller >> would. You need to go into the RAID config (you should see an option to >> do this at boot) and configure a RAID with a single disk in a RAID0 >> configuration. > > or use the MegaCli from linux to do the same, but the syntax is nastyYeah, well, the thing is, for years I've just been shoving ordinary SATA drives into the same server, to use to copy from other machines via rsync, getting a drive ready to replace in another server. I've never had trouble with SATA. This is the first time with an SAS drive. mark
On 7/26/2016 2:56 PM, m.roth at 5-cent.us wrote:> Yeah, well, the thing is, for years I've just been shoving ordinary SATA > drives into the same server, to use to copy from other machines via rsync, > getting a drive ready to replace in another server. I've never had trouble > with SATA. This is the first time with an SAS drive.mixing SAS and SATA on the same backplane can be problematic, depending on the system. all my SAS2008 LSI cards, I've reflashed with the IT firmware, this turns them into straight host bus adapters, with no hardware raid at all, then if I need raid, I use mdraid (or zfs or whatever). -- john r pierce, recycling bits in santa cruz