From: Hannes Reinecke Date: Wed, 30 Sep 2020 08:02:55 +0000 (+0200) Subject: scsi: scsi_dh_alua: Set 'transitioning' state on Unit Attention X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=fb908850ece3bc93a9d276f6dd8505d824b2789c;p=linux.git scsi: scsi_dh_alua: Set 'transitioning' state on Unit Attention We should be setting the 'transitioning' ALUA state once we get a Unit Attention indicating the array is in transitioning. There are arrays which cannot respond to an RTPG while in transitioning, and others have issues correctly reporting the state. So better to set the state during Unit Attention handling and wait for TUR / RTPG to run its course. Link: https://lore.kernel.org/r/20200930080256.90964-4-hare@suse.de Reviewed-by: Ewan D. Milne Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c index 9e8d32d01d911..92b592e9ebcbe 100644 --- a/drivers/scsi/device_handler/scsi_dh_alua.c +++ b/drivers/scsi/device_handler/scsi_dh_alua.c @@ -408,12 +408,20 @@ static char print_alua_state(unsigned char state) static int alua_check_sense(struct scsi_device *sdev, struct scsi_sense_hdr *sense_hdr) { + struct alua_dh_data *h = sdev->handler_data; + struct alua_port_group *pg; + switch (sense_hdr->sense_key) { case NOT_READY: if (sense_hdr->asc == 0x04 && sense_hdr->ascq == 0x0a) { /* * LUN Not Accessible - ALUA state transition */ + rcu_read_lock(); + pg = rcu_dereference(h->pg); + if (pg) + pg->state = SCSI_ACCESS_STATE_TRANSITIONING; + rcu_read_unlock(); alua_check(sdev, false); return NEEDS_RETRY; }