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authorBoaz Harrosh <bharrosh@panasas.com>2012-01-25 23:42:58 +0400
committerJames Bottomley <JBottomley@Parallels.com>2012-02-25 18:25:09 +0400
commit41f8ad76362e7aefe3a03949c43e23102dae6e0b (patch)
treef4f6077c0b33e5751f3d5491ca71a214389fcf5b /block/partitions/sgi.c
parentb52b80023f262ce8a0ffdcb490acb23e8678377a (diff)
downloadlinux-41f8ad76362e7aefe3a03949c43e23102dae6e0b.tar.xz
[SCSI] osd_uld: Bump MAX_OSD_DEVICES from 64 to 1,048,576
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. CC: Stable <stable@vger.kernel.org> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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