[dm-devel] Question on DM reload ioctl failure

[Chandra Seetharaman]

Hi Yanqing,

I tested RC4 and did not come across this. Can you tell me what you were
trying, I will try to reproduce.

regards,

chandra
On Wed, 2009-02-18 at 11:39 -0600, Yanqing_Liu at Dell.com wrote:
> In testing with rdac device handler on SLES11 RC4, there is an issue of
> reload ioctl failure when trying to reload device map for rdac device.
> Because of this, no multipathing device is created. The multipath tool
> package version is the built-in version (0.4.8-37.1).
> 
> The error message is as follows:
> 
> Feb 18 09:52:33 | mpathc: verified path sdf dev_t 8:80
> Feb 18 09:52:33 | mpathc: pgfailback = -2 (controller setting)
> Feb 18 09:52:33 | mpathc: pgpolicy = group_by_prio (controller setting)
> Feb 18 09:52:33 | mpathc: selector = round-robin 0 (internal default)
> Feb 18 09:52:33 | mpathc: features = 0 (internal default)
> Feb 18 09:52:33 | mpathc: hwhandler = 1 rdac (controller setting)
> Feb 18 09:52:33 | mpathc: rr_weight = 1 (internal default)
> Feb 18 09:52:33 | mpathc: minio = 1000 (config file default)
> Feb 18 09:52:33 | mpathc: no_path_retry = NONE (internal default)
> Feb 18 09:52:33 | mpathc: pg_timeout = NONE (internal default)
> Feb 18 09:52:33 | mpathc: assembled map [0 1 rdac 1 1 round-robin 0 2 1
> 8:32 1000 8:80 1000]
> 
> Feb 18 09:52:33 | mpathc: set ACT_CREATE (map does not exist)
> Feb 18 09:52:33 | libdevmapper: ioctl/libdm-iface.c(1674): dm info
> mpathc  NF   [16384]
> Feb 18 09:52:33 | mpathc: addmap [0 20971520 multipath 0 1 rdac 1 1
> round-robin 0 2 1 8:32 1000 8:80 1000]
> 
> Feb 18 09:52:33 | libdevmapper: ioctl/libdm-iface.c(1674): dm create
> mpathc mpath-360019b9000d456c0000029b74979b0da OF   [16384]
> Feb 18 09:52:33 | libdevmapper: libdm-common.c(599): mpathc: Stacking
> NODE_ADD (253,0) 0:6 0640
> Feb 18 09:52:33 | libdevmapper: ioctl/libdm-iface.c(1674): dm reload
> mpathc  OF   [16384]
> Feb 18 09:52:33 | libdevmapper: ioctl/libdm-iface.c(1691):
> device-mapper: reload ioctl failed: Invalid argument
> Feb 18 09:52:33 | libdevmapper: ioctl/libdm-iface.c(1674): dm remove
> mpathc  NF   [16384]
> 
> Any suggestion?
> 
> Thanks,
> Yanqing
> 
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