Hi Gordon, On Saturday 08 October 2005 16:23, Gordon Henderson wrote: > On Sat, 8 Oct 2005, Andrew Walrond wrote: > > On Saturday 08 October 2005 15:26, Molle Bestefich wrote: > > > IDE hotswap has never worked (OOTB at least) in Linux, and based on my > > Ideally you want hardware that will power the drive down nicely before you > take it out (and power it up nicely after you plug it back in again) to > avoid any glitches on the SCSI bus, etc... Sounds hairy! Are you aware of any linux scsi drivers which support this powering up/down, via /proc or some userspace tools perhaps? > > One thing to watch out for - if you reboot after taking the drive out the > scsi drive letters will be logically renumbered, so if you take out sda, > then reboot, what was sdb will now become sda, and so on, so if you then > subsequently hot plug a drive in, it will still have the same scsi host, > channel, id, lun numbers, but it'll be the last device in the array (eg. > it will be sdf if it was a 6-disk array) Reboot again and the original > numbering/lettering would be restored. > > Good job the RAID code doesn't really care about this... Indeed. Linux raid is very fine. If we can just fixup this hotplug weakness, it would be peerless. > > Good luck! > Thanks, and good to hear from you ;) Andrew - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
