John Polstra a7e69e8b7d Fix a bug that caused some /dev entries to continue to exist after ... the underlying drive had been hot-unplugged from the system. Here is a specific example. Filesystem code had opened /dev/da1s1e. Subsequently, the drive was hot-unplugged. This (correctly) caused all of the associated /dev/da1* entries to be deleted. When the filesystem later realized that the drive was gone it closed the device, reducing the write-access counts to 0 on the geom providers for da1s1e, da1s1, and da1. This caused geom to re-taste the providers, resulting in the devices being created again. When the drive was hot-plugged back in, it resulted in duplicate /dev entries for da1s1e, da1s1, and da1. This fix adds a new disk_gone() function which is called by CAM when a drive goes away. It orphans all of the providers associated with the drive, setting an error condition of ENXIO in each one. In addition, we prevent a re-taste on last close for writing if an error condition has been set in the provider. Sponsored by: Isilon Systems Reviewed by: phk MFC after: 1 week		2005-11-18 02:43:49 +00:00
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scsi	Fix a bug that caused some /dev entries to continue to exist after	2005-11-18 02:43:49 +00:00
cam_ccb.h
cam_debug.h
cam_periph.c	- Providing fine-grained malloc statistic by replacing M_DEVBUF with	2005-07-01 15:21:30 +00:00
cam_periph.h
cam_queue.c	- Providing fine-grained malloc statistic by replacing M_DEVBUF with	2005-07-01 15:21:30 +00:00
cam_queue.h
cam_sim.c	- Providing fine-grained malloc statistic by replacing M_DEVBUF with	2005-07-01 15:21:30 +00:00
cam_sim.h
cam_xpt_periph.h	- Providing fine-grained malloc statistic by replacing M_DEVBUF with	2005-07-01 15:21:30 +00:00
cam_xpt_sim.h
cam_xpt.c	Make the exploring of all luns supported by an HBA more of a	2005-09-16 01:26:17 +00:00
cam_xpt.h
cam.c
cam.h