Device-mapper Ioctl Error Adding Target To Table Multipath
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Device-mapper Table Multipath Error Getting Device
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Device-mapper Table 253 Multipath Error Getting Device
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Re: [dm-devel] Fwd: multipath errors Date: Fri, 27 Sep 2013 15:11:04 -0500 On Mon, Sep 23, 2013 at 11:09:18AM +0300, Amitai Alkalay wrote: > Hi, > Sorry for bumping, multipath error getting device linux but I will appreciate any help on this matter.. > Thanks, > device-mapper: table: 253:4: multipath: error getting device Amitai > > ---------- Forwarded message ---------- > From: Amitai Alkalay <[1]amitai alkalay work gmail com> > Date: device-mapper: table: 253:5: multipath: error getting device Tue, Sep 10, 2013 at 2:29 PM > Subject: multipath errors > To: [2]dm-devel redhat com > > hi, > I sometimes see cases where io failed after some path https://access.redhat.com/discussions/1307143 failover, although > there are other valid paths. > I seem to get a lot of the following errors during a path removal > (failover): > > Aug 1 08:59:37 lg641 multipathd: 3514f0c532d80000a: failed in domap for removal of path sdcy > Aug 1 08:59:37 lg641 multipathd: uevent trigger error > Aug 1 08:59:37 lg641 multipathd: sdt: remove path (uevent) > https://www.redhat.com/archives/dm-devel/2013-September/msg00168.html Aug 1 08:59:37 lg641 kernel: device-mapper: table: 253:5: multipath: error getting device > Aug 1 08:59:37 lg641 kernel: device-mapper: ioctl: error adding target to table > Aug 1 08:59:37 lg641 multipathd: 3514f0c532d800001: load table [0 21474836480 multipath 0 0 1 1 queue-length 0 12 1 66:240 1 66:80 1 70:192 1 71:96 1 67:176 1 67:112 1 71:224 1 128:128 1 8: > 16 1 69:16 1 69:32 1 8:32 1] > Aug 1 08:59:37 lg641 multipathd: sdt: path removed from map 3514f0c532d800001f > > All the other paths are there, and still multipath decided to fail the io > with no apparent reason.� > > I would appreciate any comment about: > > 1. How can this happen. It shouldn't. The kernel should check through all of the paths before failing. Sometimes some actions on storage arrays temporarily bring all paths down, but even in that case, you should see messages in the logs of multipath trying all the paths before it fails. > 2. How can I increase the log level to understand multipath decisions. in
Issues Roadmap View Issue Details[Jump to Notes] [Issue History] [Print] IDProjectCategoryView StatusDate SubmittedLast Update0003290CentOS-5device-mapper-multipathpublic2008-12-08 16:112008-12-11 12:15ReporterfinistPrioritynormalSeveritymajorReproducibilityalwaysStatusfeedbackResolutionopenProduct Version5.2Target VersionFixed in VersionSummary0003290: multipath does not work https://bugs.centos.org/view.php?id=3290 (device-mapper: table: 253:0: multipath: error getting device)Descriptioni've faced a strange issue with multipathing: the goal is to install CentOS5.2 and use multipath root device. 1) CentOS 4.x work fine 2) CentOS 5.2 installs fine (with installation command "linux mpath"), but the resulting systems seems not using multipath: [root@localhost ~]# l /dev/mapper/ total 0 1217 drwxr-xr-x 2 root 60 error getting Dec 8 17:41 ./ 1214 drwxr-xr-x 10 root 14320 Dec 8 17:44 ../ 4795 crw------- 1 root 10, 63 Dec 8 17:41 control [root@localhost ~]# multipath -v2 [root@localhost ~]# multipath -v2 -d create: mpath0 (3600508b400011c130003000000fc0000) COMPAQ,HSV111 (C)COMPAQ [size=100G][features=0][hwhandler=1 hp-sw] \_ round-robin 0 [prio=4][undef] \_ 0:0:0:1 sda 8:0 [undef][ready] \_ 0:0:1:1 sdb 8:16 [undef][ready] \_ 1:0:0:1 sdc 8:32 [undef][ready] error getting device \_ 1:0:1:1 sdd 8:48 [undef][ready] [root@localhost ~]# cat /etc/multipath.conf defaults { user_friendly_names yes } blacklist { devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*" devnode "^(hd|xvd)[a-z]*" wwid "*" } # Make sure our multipath devices are enabled. blacklist_exceptions { wwid "3600508b400011c130003000000fc0000" } multipaths { multipath { wwid "3600508b400011c130003000000fc0000" alias mpath0 } } devices { device { vendor "HP|COMPAQ*" product "HSV1*" hardware_handler "1 hp-sw" path_grouping_policy group_by_prio } } The error happens on "reload" ioctl: [root@localhost ~]# multipath -v9 ... mpath0: pgfailover = -1 (internal default) mpath0: pgpolicy = failover (internal default) mpath0: selector = round-robin 0 (internal default) mpath0: features = 0 (internal default) mpath0: hwhandler = 1 hp-sw (controller setting) mpath0: rr_weight = 1 (internal default) mpath0: minio = 1000 (config file default) mpath0: no_path_retry = NONE (internal default) pg_timeout = NONE (internal default) mpath0: set ACT_CREATE (map does not exist) libdevmapper: ioctl/libdm-iface.c(1623): device-mapper: reload ioctl failed: Invalid argument mpath0: domap (0) failure for create/reload map mpath0: remove multipath map ... dmesg after that shows several pairs of following messages: device-mapper: table: 253:0: multipath: error getting device de