rbd is a block device interface for Ceph. It does not support any SCSI commands, so this patch adds bus detection and virtual vendor/product pathinfo.
Signed-off-by: Mike Christie <[email protected]> --- libmultipath/checkers.h | 1 + libmultipath/discovery.c | 22 ++++++++++++++++++++++ libmultipath/structs.h | 1 + 3 files changed, 24 insertions(+) diff --git a/libmultipath/checkers.h b/libmultipath/checkers.h index a935b3f..ea59c94 100644 --- a/libmultipath/checkers.h +++ b/libmultipath/checkers.h @@ -84,6 +84,7 @@ enum path_check_state { #define EMC_CLARIION "emc_clariion" #define READSECTOR0 "readsector0" #define CCISS_TUR "cciss_tur" +#define RBD "rbd" #define DEFAULT_CHECKER DIRECTIO diff --git a/libmultipath/discovery.c b/libmultipath/discovery.c index 126a54f..31bb02d 100644 --- a/libmultipath/discovery.c +++ b/libmultipath/discovery.c @@ -1136,6 +1136,23 @@ scsi_sysfs_pathinfo (struct path * pp) } static int +rbd_sysfs_pathinfo (struct path * pp) +{ + sprintf(pp->vendor_id, "Ceph"); + sprintf(pp->product_id, "RBD"); + + condlog(3, "%s: vendor = %s product = %s", pp->dev, pp->vendor_id, + pp->product_id); + /* + * set the hwe configlet pointer + */ + pp->hwe = find_hwe(conf->hwtable, pp->vendor_id, pp->product_id, NULL); + + /* should we fake host / bus / target / lun so print looks nice */ + return 0; +} + +static int ccw_sysfs_pathinfo (struct path * pp) { struct udev_device *parent; @@ -1337,6 +1354,8 @@ sysfs_pathinfo(struct path * pp) pp->bus = SYSFS_BUS_CCW; if (!strncmp(pp->dev,"sd", 2)) pp->bus = SYSFS_BUS_SCSI; + if (!strncmp(pp->dev,"rbd", 3)) + pp->bus = SYSFS_BUS_RBD; if (pp->bus == SYSFS_BUS_UNDEF) return 0; @@ -1349,6 +1368,9 @@ sysfs_pathinfo(struct path * pp) } else if (pp->bus == SYSFS_BUS_CCISS) { if (cciss_sysfs_pathinfo(pp)) return 1; + } else if (pp->bus == SYSFS_BUS_RBD) { + if (rbd_sysfs_pathinfo(pp)) + return 1; } return 0; } diff --git a/libmultipath/structs.h b/libmultipath/structs.h index ab7dc25..84e56dc 100644 --- a/libmultipath/structs.h +++ b/libmultipath/structs.h @@ -52,6 +52,7 @@ enum sysfs_buses { SYSFS_BUS_IDE, SYSFS_BUS_CCW, SYSFS_BUS_CCISS, + SYSFS_BUS_RBD, }; enum pathstates { -- 2.5.5 -- dm-devel mailing list [email protected] https://www.redhat.com/mailman/listinfo/dm-devel
