<div dir="ltr">Here is the current config on my ubuntu 12.04.4 LTS on HP ProLiant DL360p Gen8<div><br></div><div>It has two disks configured as single disk lun (raid 0) and provisioned to the OS and built two linux software raid1</div><div><br></div><div><div>md0 : active raid1 sda1[0] sdb1[1]</div><div> 499392 blocks super 1.2 [2/2] [UU]</div><div> </div><div>md1 : active raid1 sda2[0] sdb2[1]</div><div> 292304448 blocks super 1.2 [2/2] [UU]</div><div><br></div><div>This server has total of 6 disk slots and a cdrom, so 2 disks are 300GB each 4 disk slots are empty.</div><div><br></div><div>I brought two 1TB disks and installed in the server, but I can provision them to the OS through this raid controller.</div><div><br></div><div>Here is the current layout according to the raid controller</div><div><br></div><div><div># hpacucli controller all show config</div><div><br></div><div>Smart Array P420i in Slot 0 (Embedded) </div><div><br></div><div>Note: Predictive Spare Activation Mode is enabled, physical drives that are in predictive failure state will not be available for use as data or spare drives.</div><div><br></div><div> (sn: 5001238012340EC50)</div><div><br></div><div> array A (SAS, Unused Space: 0 MB)</div><div><br></div><div><br></div><div> logicaldrive 1 (279.4 GB, RAID 0, OK)</div><div><br></div><div> physicaldrive 1I:1:1 (port 1I:box 1:bay 1, SAS, 300 GB, OK)</div><div><br></div><div> array B (SAS, Unused Space: 0 MB)</div><div><br></div><div><br></div><div> logicaldrive 2 (279.4 GB, RAID 0, OK)</div><div><br></div><div> physicaldrive 1I:1:2 (port 1I:box 1:bay 2, SAS, 300 GB, OK)</div><div><br></div><div> unassigned</div><div><br></div><div> physicaldrive 2I:1:5 (port 2I:box 1:bay 5, SAS, 1 TB, OK)</div><div> physicaldrive 2I:1:6 (port 2I:box 1:bay 6, SAS, 1 TB, OK)</div><div><br></div></div><div>And when I try to provision any of those two new disks it fails with 'Max array count reached' like below</div><div><br></div><div><div># hpacucli controller slot=0 create type=ld drives=2I:1:5 raid=0</div><div><br></div><div>Error: This operation is not supported with the current configuration. Use the </div><div> "show" command on devices to show additional details about the</div><div> configuration.</div><div>Reason: Max array count reached</div></div><div><br></div><div><div># hpacucli controller slot=0 create type=ld drives=2I:1:6 raid=0</div><div><br></div><div>Error: This operation is not supported with the current configuration. Use the </div><div> "show" command on devices to show additional details about the</div><div> configuration.</div><div>Reason: Max array count reached</div></div><div><br></div><div>Is the raid controller that bad that it can only provision two raid0s max?</div><div><br></div><div>I will go with raid1 on the raid controller if this "smart" array raid controller is only build two raids</div><div><br></div><div>Since I am using ext4 and it has delayed allocation already (write behind) and I have plenty of </div><div>memory and cpu resource I want to stick with software raid.</div><div><br></div><div>Thanks for any suggestion on a fix.</div><div><br></div><div><br></div>-- <br><div>Asif Iqbal<br>PGP Key: 0xE62693C5 KeyServer: <a href="http://pgp.mit.edu" target="_blank">pgp.mit.edu</a><br>A: Because it messes up the order in which people normally read text.<br>Q: Why is top-posting such a bad thing?<br><br></div> </div></div>