86 lines
2.4 KiB
Plaintext
86 lines
2.4 KiB
Plaintext
From: Hannes Reinecke <hare@suse.de>
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Subject: DM-MPIO fails to tresspass LUNs on CLARiiON arrays
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Reference: bnc#484529
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Patch-mainline: Not yet
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On Clariion arrays we fail to send the trespass command correctly.
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We're trying to send the trespass command to via an disabled path,
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causing the device handler to loop trying to send the command on
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an invalid path.
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Signed-off-by: Hannes Reinecke <hare@suse.de>
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---
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drivers/md/dm-mpath.c | 12 +++++++++---
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drivers/md/dm-table.c | 12 ++++++++----
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2 files changed, 17 insertions(+), 7 deletions(-)
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--- a/drivers/md/dm-mpath.c
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+++ b/drivers/md/dm-mpath.c
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@@ -1230,8 +1230,9 @@ static void pg_init_done(void *data, int
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errors = 0;
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break;
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}
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- DMERR("Could not failover the device: Handler scsi_dh_%s "
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- "Error %d.", m->hw_handler_name, errors);
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+ DMERR("Count not failover device %s: Handler scsi_dh_%s "
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+ "was not loaded.", pgpath->path.pdev,
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+ m->hw_handler_name);
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/*
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* Fail path for now, so we do not ping pong
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*/
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@@ -1244,6 +1245,10 @@ static void pg_init_done(void *data, int
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*/
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bypass_pg(m, pg, 1);
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break;
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+ case SCSI_DH_DEV_OFFLINED:
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+ DMWARN("Device %s offlined.", pgpath->path.pdev);
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+ errors = 0;
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+ break;
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case SCSI_DH_RETRY:
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/* Wait before retrying. */
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delay_retry = 1;
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@@ -1264,7 +1269,8 @@ static void pg_init_done(void *data, int
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spin_lock_irqsave(&m->lock, flags);
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if (errors) {
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if (pgpath == m->current_pgpath) {
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- DMERR("Could not failover device. Error %d.", errors);
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+ DMERR("Could not failover device %s, error %d.",
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+ pgpath->path.pdev, errors);
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m->current_pgpath = NULL;
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m->current_pg = NULL;
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}
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--- a/drivers/md/dm-table.c
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+++ b/drivers/md/dm-table.c
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@@ -414,14 +414,18 @@ static int upgrade_mode(struct dm_dev_in
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dd_new = dd_old = *dd;
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- dd_new.dm_dev.mode |= new_mode;
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+ dd_new.dm_dev.mode = new_mode;
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dd_new.dm_dev.bdev = NULL;
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r = open_dev(&dd_new, dd->dm_dev.bdev->bd_dev, md);
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- if (r)
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+ if (r == -EROFS) {
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+ dd_new.dm_dev.mode &= ~FMODE_WRITE;
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+ r = open_dev(&dd_new, dd->dm_dev.bdev->bd_dev, md);
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+ }
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+ if (!r)
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return r;
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- dd->dm_dev.mode |= new_mode;
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+ dd->dm_dev.mode = new_mode;
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close_dev(&dd_old, md);
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return 0;
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@@ -483,7 +487,7 @@ static int __table_get_device(struct dm_
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atomic_set(&dd->count, 0);
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list_add(&dd->list, &t->devices);
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- } else if (dd->dm_dev.mode != (mode | dd->dm_dev.mode)) {
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+ } else if (dd->dm_dev.mode != mode) {
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r = upgrade_mode(dd, mode, t->md);
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if (r)
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return r;
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