Hi Martin: I test this in 0.8.4 without your patch series . I have review the code with your patch series and I think this problem will be solved. But I have another question. ev_remove_path ->__setup_multipath ->update_multipath_strings ->update_multipath_table ->update_pathvec_from_dm ->store_path When multipathd del path xxx(such as sde) and multipath -v2 are executed simultaneously, will the path(sde) deleted be stored to pathvec again? In my opinion, sde is't delete in pathvec and in disassembel_map sde will be stored to mpp->pg. When update_pathvec_from_dm, sde will be stored again. On 2020/8/19 0:36, Martin Wilck wrote: > On Tue, 2020-08-18 at 21:08 +0800, lixiaokeng wrote: >> Add reclear_pp_from_mpp in ev_remove_path to make sure that pp is >> cleared in mpp. >> >> When multipathd del path xxx, multipathd -v2, multipathd add path xxx >> and multipath -U >> dm-x are executed simultaneously, multipath -U dm-x will case >> coredump. >> >> The reason is that there are two paths with same dev_t in dm_table. >> The process >> is as follows: > > Thanks for the report. > > With which code have you tested this? I have reason to believe that > it would behave differently with my last patch series (in particular, > part V "removed path handling") applied. I'm not sure if my series > would fix the issue, but it would probably need a different fix. > > Regards, > Martin > > > > . > -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
