diff options
Diffstat (limited to 'sys/cam/ctl/ctl_backend_block.c')
-rw-r--r-- | sys/cam/ctl/ctl_backend_block.c | 83 |
1 files changed, 47 insertions, 36 deletions
diff --git a/sys/cam/ctl/ctl_backend_block.c b/sys/cam/ctl/ctl_backend_block.c index 71ea521..3da6153 100644 --- a/sys/cam/ctl/ctl_backend_block.c +++ b/sys/cam/ctl/ctl_backend_block.c @@ -2,6 +2,7 @@ * Copyright (c) 2003 Silicon Graphics International Corp. * Copyright (c) 2009-2011 Spectra Logic Corporation * Copyright (c) 2012 The FreeBSD Foundation + * Copyright (c) 2014-2015 Alexander Motin <mav@FreeBSD.org> * All rights reserved. * * Portions of this software were developed by Edward Tomasz Napierala @@ -259,8 +260,7 @@ static int ctl_be_block_open_file(struct ctl_be_block_lun *be_lun, static int ctl_be_block_open_dev(struct ctl_be_block_lun *be_lun, struct ctl_lun_req *req); static int ctl_be_block_close(struct ctl_be_block_lun *be_lun); -static int ctl_be_block_open(struct ctl_be_block_softc *softc, - struct ctl_be_block_lun *be_lun, +static int ctl_be_block_open(struct ctl_be_block_lun *be_lun, struct ctl_lun_req *req); static int ctl_be_block_create(struct ctl_be_block_softc *softc, struct ctl_lun_req *req); @@ -1663,7 +1663,7 @@ ctl_be_block_worker(void *context, int pending) DPRINTF("entered\n"); /* * Fetch and process I/Os from all queues. If we detect LUN - * CTL_LUN_FLAG_OFFLINE status here -- it is result of a race, + * CTL_LUN_FLAG_NO_MEDIA status here -- it is result of a race, * so make response maximally opaque to not confuse initiator. */ for (;;) { @@ -1675,7 +1675,7 @@ ctl_be_block_worker(void *context, int pending) ctl_io_hdr, links); mtx_unlock(&be_lun->queue_lock); beio = (struct ctl_be_block_io *)PRIV(io)->ptr; - if (cbe_lun->flags & CTL_LUN_FLAG_OFFLINE) { + if (cbe_lun->flags & CTL_LUN_FLAG_NO_MEDIA) { ctl_set_busy(&io->scsiio); ctl_complete_beio(beio); return; @@ -1689,7 +1689,7 @@ ctl_be_block_worker(void *context, int pending) STAILQ_REMOVE(&be_lun->config_write_queue, &io->io_hdr, ctl_io_hdr, links); mtx_unlock(&be_lun->queue_lock); - if (cbe_lun->flags & CTL_LUN_FLAG_OFFLINE) { + if (cbe_lun->flags & CTL_LUN_FLAG_NO_MEDIA) { ctl_set_busy(&io->scsiio); ctl_config_write_done(io); return; @@ -1703,7 +1703,7 @@ ctl_be_block_worker(void *context, int pending) STAILQ_REMOVE(&be_lun->config_read_queue, &io->io_hdr, ctl_io_hdr, links); mtx_unlock(&be_lun->queue_lock); - if (cbe_lun->flags & CTL_LUN_FLAG_OFFLINE) { + if (cbe_lun->flags & CTL_LUN_FLAG_NO_MEDIA) { ctl_set_busy(&io->scsiio); ctl_config_read_done(io); return; @@ -1717,7 +1717,7 @@ ctl_be_block_worker(void *context, int pending) STAILQ_REMOVE(&be_lun->input_queue, &io->io_hdr, ctl_io_hdr, links); mtx_unlock(&be_lun->queue_lock); - if (cbe_lun->flags & CTL_LUN_FLAG_OFFLINE) { + if (cbe_lun->flags & CTL_LUN_FLAG_NO_MEDIA) { ctl_set_busy(&io->scsiio); ctl_data_submit_done(io); return; @@ -2137,8 +2137,7 @@ ctl_be_block_close(struct ctl_be_block_lun *be_lun) } static int -ctl_be_block_open(struct ctl_be_block_softc *softc, - struct ctl_be_block_lun *be_lun, struct ctl_lun_req *req) +ctl_be_block_open(struct ctl_be_block_lun *be_lun, struct ctl_lun_req *req) { struct ctl_be_lun *cbe_lun = &be_lun->cbe_lun; struct nameidata nd; @@ -2309,7 +2308,7 @@ ctl_be_block_create(struct ctl_be_block_softc *softc, struct ctl_lun_req *req) if ((cbe_lun->flags & CTL_LUN_FLAG_PRIMARY) || control_softc->ha_mode == CTL_HA_MODE_SER_ONLY) { - retval = ctl_be_block_open(softc, be_lun, req); + retval = ctl_be_block_open(be_lun, req); if (retval != 0) { retval = 0; req->status = CTL_LUN_WARNING; @@ -2339,7 +2338,7 @@ ctl_be_block_create(struct ctl_be_block_softc *softc, struct ctl_lun_req *req) } if (be_lun->vn == NULL) - cbe_lun->flags |= CTL_LUN_FLAG_OFFLINE; + cbe_lun->flags |= CTL_LUN_FLAG_NO_MEDIA; /* Tell the user the blocksize we ended up using */ params->lun_size_bytes = be_lun->size_bytes; params->blocksize_bytes = cbe_lun->blocksize; @@ -2526,8 +2525,8 @@ ctl_be_block_rm(struct ctl_be_block_softc *softc, struct ctl_lun_req *req) } if (be_lun->vn != NULL) { - cbe_lun->flags |= CTL_LUN_FLAG_OFFLINE; - ctl_lun_offline(cbe_lun); + cbe_lun->flags |= CTL_LUN_FLAG_NO_MEDIA; + ctl_lun_no_media(cbe_lun); taskqueue_drain_all(be_lun->io_taskqueue); ctl_be_block_close(be_lun); } @@ -2635,22 +2634,27 @@ ctl_be_block_modify(struct ctl_be_block_softc *softc, struct ctl_lun_req *req) if ((cbe_lun->flags & CTL_LUN_FLAG_PRIMARY) || control_softc->ha_mode == CTL_HA_MODE_SER_ONLY) { if (be_lun->vn == NULL) - error = ctl_be_block_open(softc, be_lun, req); + error = ctl_be_block_open(be_lun, req); else if (vn_isdisk(be_lun->vn, &error)) error = ctl_be_block_open_dev(be_lun, req); else if (be_lun->vn->v_type == VREG) error = ctl_be_block_open_file(be_lun, req); else error = EINVAL; - if ((cbe_lun->flags & CTL_LUN_FLAG_OFFLINE) && + if ((cbe_lun->flags & CTL_LUN_FLAG_NO_MEDIA) && be_lun->vn != NULL) { - cbe_lun->flags &= ~CTL_LUN_FLAG_OFFLINE; - ctl_lun_online(cbe_lun); + cbe_lun->flags &= ~CTL_LUN_FLAG_NO_MEDIA; + ctl_lun_has_media(cbe_lun); + } else if ((cbe_lun->flags & CTL_LUN_FLAG_NO_MEDIA) == 0 && + be_lun->vn == NULL) { + cbe_lun->flags |= CTL_LUN_FLAG_NO_MEDIA; + ctl_lun_no_media(cbe_lun); } + cbe_lun->flags &= ~CTL_LUN_FLAG_EJECTED; } else { if (be_lun->vn != NULL) { - cbe_lun->flags |= CTL_LUN_FLAG_OFFLINE; - ctl_lun_offline(cbe_lun); + cbe_lun->flags |= CTL_LUN_FLAG_NO_MEDIA; + ctl_lun_no_media(cbe_lun); taskqueue_drain_all(be_lun->io_taskqueue); error = ctl_be_block_close(be_lun); } else @@ -2761,27 +2765,34 @@ ctl_be_block_config_write(union ctl_io *io) break; case START_STOP_UNIT: { struct scsi_start_stop_unit *cdb; + struct ctl_lun_req req; cdb = (struct scsi_start_stop_unit *)io->scsiio.cdb; - - if (cdb->how & SSS_START) - retval = ctl_start_lun(cbe_lun); - else - retval = ctl_stop_lun(cbe_lun); - - /* - * In general, the above routines should not fail. They - * just set state for the LUN. So we've got something - * pretty wrong here if we can't start or stop the LUN. - */ - if (retval != 0) { - ctl_set_internal_failure(&io->scsiio, - /*sks_valid*/ 1, - /*retry_count*/ 0xf051); - retval = CTL_RETVAL_COMPLETE; + if (cdb->how & SSS_START) { + if ((cdb->how & SSS_LOEJ) && be_lun->vn == NULL) { + retval = ctl_be_block_open(be_lun, &req); + cbe_lun->flags &= ~CTL_LUN_FLAG_EJECTED; + if (retval == 0) { + cbe_lun->flags &= ~CTL_LUN_FLAG_NO_MEDIA; + ctl_lun_has_media(cbe_lun); + } else { + cbe_lun->flags |= CTL_LUN_FLAG_NO_MEDIA; + ctl_lun_no_media(cbe_lun); + } + } + ctl_start_lun(cbe_lun); } else { - ctl_set_success(&io->scsiio); + ctl_stop_lun(cbe_lun); + if (cdb->how & SSS_LOEJ) { + cbe_lun->flags |= CTL_LUN_FLAG_NO_MEDIA; + cbe_lun->flags |= CTL_LUN_FLAG_EJECTED; + ctl_lun_ejected(cbe_lun); + if (be_lun->vn != NULL) + ctl_be_block_close(be_lun); + } } + + ctl_set_success(&io->scsiio); ctl_config_write_done(io); break; } |