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authorBoaz Harrosh <bharrosh@panasas.com>2012-01-25 21:42:58 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-03-12 10:32:57 -0700
commitd4d6cc13fa9c22283fdb6c5261ff988d00e018b8 (patch)
tree2ea1c81a6aa42042cdecd1432e46641b89c959fe /drivers/scsi
parent56c54856551b8a8199fda32aa7c416c719e5f0b9 (diff)
osd_uld: Bump MAX_OSD_DEVICES from 64 to 1,048,576
commit 41f8ad76362e7aefe3a03949c43e23102dae6e0b upstream. It used to be that minors where 8 bit. But now they are actually 20 bit. So the fix is simplicity itself. I've tested with 300 devices and all user-mode utils work just fine. I have also mechanically added 10,000 to the ida (so devices are /dev/osd10000, /dev/osd10001 ...) and was able to mkfs an exofs filesystem and access osds from user-mode. All the open-osd user-mode code uses the same library to access devices through their symbolic names in /dev/osdX so I'd say it's pretty safe. (Well tested) This patch is very important because some of the systems that will be deploying the 3.2 pnfs-objects code are larger than 64 OSDs and will stop to work properly when reaching that number. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/osd/osd_uld.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/scsi/osd/osd_uld.c b/drivers/scsi/osd/osd_uld.c
index b31a8e3841d7..d4ed9eb52657 100644
--- a/drivers/scsi/osd/osd_uld.c
+++ b/drivers/scsi/osd/osd_uld.c
@@ -69,10 +69,10 @@
#ifndef SCSI_OSD_MAJOR
# define SCSI_OSD_MAJOR 260
#endif
-#define SCSI_OSD_MAX_MINOR 64
+#define SCSI_OSD_MAX_MINOR MINORMASK
static const char osd_name[] = "osd";
-static const char *osd_version_string = "open-osd 0.2.0";
+static const char *osd_version_string = "open-osd 0.2.1";
MODULE_AUTHOR("Boaz Harrosh <bharrosh@panasas.com>");
MODULE_DESCRIPTION("open-osd Upper-Layer-Driver osd.ko");