Date: Fri, 1 Oct 1999 10:10:23 -0700 (PDT) From: jin@george.lbl.gov To: hackers@freebsd.org Subject: SCSI disk naming problem Message-ID: <199910011710.KAA18313@george.lbl.gov>
next in thread | raw e-mail | index | archive | help
Current FreeBSD SCSi disk naming mechanism is problem for using more than one disks in the chain during the disk failure. The problem is that the name is not fixed with is SCSI ID. e.g., if one disk is presented in the chain, regardless its SCSI ID, it is always named "da0"; if two disks are installed, the one with lower ID is named da0 and the other will be named as da1. When the lower ID one is crashed, then the other disk will be named as da0 (from da1) after reboot, and it is not mountable due to the name changing. If a system has a UW SCSI controller with 15 disks in the chain, when the first disk (ID = 0) crashed, all rest 14 disks will be useless until either fstab modified or another disk is added with SCSI ID = 0. Why not we use a fixed name corresponding the SCSI ID. That is, disk with ID 0 will be always named as da0, and disk with ID 1 will be always named da1, etc.? Is there problem with fixed disk naming mechanism? -Jin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199910011710.KAA18313>