Hi all, Today I installed 16 fresh Western Digital WD5000BEVT (2,5") drives in one of our test servers. I created a software raid5 with a hotspare on these 16 disks. I noticed that the detection of the disks during boottime was very very slow. Creating the md superblocks went very very slow. After that all seemed fine (speed of the raid5 init was normal). I noticed many of these messages in the syslog (also attached): Mar 31 14:34:17 test ata_id[3752]: main: HDIO_GET_IDENTITY failed for '/dev/.tmp-8-112' Mar 31 14:34:17 test ata_id[3765]: main: HDIO_GET_IDENTITY failed for '/dev/.tmp-8-128' This seems to correspond to the slow detection of the disks. Is this an ATA problem, or a problem in the mvsas driver? I use the mvsas driver from 2.6.32 with the latest patch from Srinivas. Kind regards, Caspar Smit [Jack] It's normal behavior of SATA disk, SATA disk need more time than SAS disk to spin up to response command. Best Regards ************************************************************************ Jack Wang 王金浦 Software Engineer -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
