The problem with pushing this policy to the user is that software applications have no means to determine that a device is currently in-use. For instance, the net result of pulling a device on a mounted filesystem is an eventual kernel panic. There needs to be a means to reasonably *predict* the behavior of the operating system and keep away from doing harm to oneself. Yes, this is an old discussion, usually turned away as something that can not be solved because of race conditions. There are users out there that would appreciate a race condition that reduces the possibility of a kernel panic. Sincerely -- Mark Salyzyn -----Original Message----- From: linux-scsi-owner@xxxxxxxxxxxxxxx [mailto:linux-scsi-owner@xxxxxxxxxxxxxxx] On Behalf Of James Bottomley Sent: Thursday, August 11, 2005 10:51 AM To: Harald Seipp Cc: SCSI Mailing List Subject: Re: remove-single-device removes mounted HDDs (kernel 2.6) On Thu, 2005-08-11 at 16:32 +0200, Harald Seipp wrote: > Ok - but shouldn't the behavior that devices that have mounted partitions > can be removed be considered as a bug? Not really. We remove as much as we can and leave it up to the hotplug scripts to detach the mount point (any further I/O's will error). If there's a reattachment udev should identify the device (even if it's on a different node) and do the right thing. Essentially in 2.6 resolution of this problem is pushed up to the user as a policy decision. James - : 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 - : 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
