How to troubleshoot device-mapper: table: 253:7: multipath: error getting device?
version:redhat 6.4
problem:
[root@j1 ~]#dmesg [Hardware Error]: Machine check events logged [Hardware Error]: Machine check events logged [Hardware Error]: Machine check events logged [Hardware Error]: Machine check events logged ISO 9660 Extensions: Microsoft Joliet Level 3 ISO 9660 Extensions: RRIP_1991A device-mapper: table: 253:7: multipath: error getting device device-mapper: ioctl: error adding target to table device-mapper: table: 253:7: multipath: error getting device device-mapper: ioctl: error adding target to table device-mapper: table: 253:7: multipath: error getting device device-mapper: ioctl: error adding target to table device-mapper: table: 253:7: multipath: error getting device device-mapper: ioctl: error adding target to table
[root@j1 ~]# dmsetup info -C Name Maj Min Stat Open Targ Event UUID vg00-LogVol01 253 5 L--w 1 1 0 LVM-eJV2Rjx11AacJLzet6tcb2z2O9PTUku64U1mtUXXTcl72B6Iu6W5V6Hin7uTNOkw vg00-LogVol00 253 0 L--w 1 1 0 LVM-eJV2Rjx11AacJLzet6tcb2z2O9PTUku6EJrCeqVbJoyKw44HELUYjF9N2dVlHc4Q mpathd 253 4 L--w 33 1 1 mpath-36001438009b064580000400000710000 mpathc 253 3 L--w 9 1 1 mpath-36001438009b064580000400000650000 mpathb 253 2 L--w 63 1 1 mpath-36001438009b0645800004000006b0000 vg00-LogVol03 253 1 L--w 1 1 0 LVM-eJV2Rjx11AacJLzet6tcb2z2O9PTUku6HogLq442U3F5A2Kj4PDAOm56R1Krex2j vg00-LogVol02 253 6 L--w 1 1 0 LVM-eJV2Rjx11AacJLzet6tcb2z2O9PTUku6wQS2Nd3n04mFad51Lx1Y8VBdqIxHq0KV
[root@j1 ~]# vgs VG #PV #LV #SN Attr VSize VFree vg00 1 4 0 wz--n- 558.68g 369.23g [root@j1 ~]# pvs PV VG Fmt Attr PSize PFree /dev/sda2 vg00 lvm2 a-- 558.68g 369.23g [root@j1 ~]# lvs LV VG Attr LSize Pool Origin Data% Move Log Cpy%Sync Convert LogVol00 vg00 -wi-ao--- 97.66g LogVol01 vg00 -wi-ao--- 9.77g LogVol02 vg00 -wi-ao--- 19.53g LogVol03 vg00 -wi-ao--- 62.50g [root@j1 ~]# lsmod |grep dm_multipath dm_multipath 17756 4 dm_round_robin dm_mod 82839 22 dm_multipath,dm_mirror,dm_log
root@j1 ~]# grep -v ^$ /etc/multipath.conf defaults { udev_dir /dev polling_interval 10 path_selector "round-robin 0" path_grouping_policy failover getuid_callout "/lib/udev/scsi_id --whitelisted --device=/dev/%n" prio alua path_checker tur rr_min_io 100 rr_min_io_rq 1 rr_weight uniform failback immediate no_path_retry 12 user_friendly_names yes } blacklist { devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]" devnode "^hd[a-z][[0-9]]" devnode "^cciss!c[0-9]d[0-9]" devnode "^sda[0-9]" } devices { device { vendor "HP" product "OPEN-." path_grouping_policy multibus getuid_callout "/lib/udev/scsi_id --whitelisted --device=/dev/%n" path_selector "round-robin 0" path_checker tur features "0" hardware_handler "0" prio const failback immediate rr_weight uniform no_path_retry queue rr_min_io 1000 rr_min_io_rq 1 } }
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