Multipathing is not working

[chandra]

Dear Sir,

multipath -ll is not showing any thing.

my multipath -v3 out put is is like this.

and vgs is getting this output.

WARNING: Not using device /dev/sdax for PV JeXUNv-aApm-efUH-XdhM-IA3u-NloA-GJMtEp.
WARNING: Not using device /dev/sdaz for PV xfBKBO-bV47-Sa4g-HT3o-1y6T-B4Sk-QqPRBG.
WARNING: Not using device /dev/sdbq for PV eW0anE-P9o0-Zw8J-LeIB-ZoK1-edvz-xH4CAe.
WARNING: Not using device /dev/sdbb for PV N7ZGhY-OrmB-v9K3-B4yT-jEoU-OCh2-LtbeWx.
WARNING: Not using device /dev/sdg for PV tLHyXT-rM23-nXL2-VvQ7-TpwU-rnR4-hIOlVR.
WARNING: Not using device /dev/sdbs for PV DcoCgg-BTn5-tpbt-iHkw-sr7P-EE2o-JHTeJg.
WARNING: Not using device /dev/sdan for PV Jc1qFq-UXlN-pYwn-cTCr-bqSA-SGDH-aOH1R1.
WARNING: Not using device /dev/sdbd for PV WbPoRj-RtHa-Vpry-XQHm-Y07b-wvrQ-mmPWse.
WARNING: Not using device /dev/sdi for PV qQYw3o-ixY2-4Zn7-AH5E-MTZ5-VYV8-n25VdR.
WARNING: Not using device /dev/sdy for PV DbCaSB-AMp2-TFk0-0s9A-YFXM-C6Dd-zNZPRf.
WARNING: Not using device /dev/sdao for PV vsRcg2-ezIU-UGoC-vWqV-TKd9-NgeP-mHaY6v.
WARNING: Not using device /dev/sdj for PV JF6Gfh-BCPf-ZAtl-8p9B-A7uE-UJU6-PF8RnK.

 

[chandra]

dpkg -s multipath-tools | grep Version
Version: 0.7.9-3

 

[alexskysilk]

check your multipath.conf. on buster, you have to specify which drives you want or enable discovery; this is the opposite behavior from stretch.

 

[chandra]

check your multipath.conf. on buster, you have to specify which drives you want or enable discovery; this is the opposite behavior from stretch.

HI,

How to enable discovery please guideme.

My iscsi status is

service open-iscsi status
● open-iscsi.service - Login to default iSCSI targets
Loaded: loaded (/lib/systemd/system/open-iscsi.service; enabled; vendor preset: enabled)
Active: active (exited) since Thu 2020-06-25 20:38:56 IST; 11h ago
Docs: man:iscsiadm(8)
man:iscsid(8)
Process: 2378 ExecStartPre=/bin/systemctl --quiet is-active iscsid.service (code=exited, status=0/SUCCESS)
Process: 2381 ExecStart=/sbin/iscsiadm -m node --loginall=automatic (code=exited, status=0/SUCCESS)
Process: 3120 ExecStart=/lib/open-iscsi/activate-storage.sh (code=exited, status=0/SUCCESS)
Main PID: 3120 (code=exited, status=0/SUCCESS)

Jun 25 20:38:56 p09 systemd[1]: Starting Login to default iSCSI targets...
Jun 25 20:38:57 p09 iscsiadm[2381]: Logging in to [iface: default, target: iqn.2002-03.com.compellent:5000d31000cf091f, portal: 10.0.12.2,3260] (multiple)
Jun 25 20:38:57 p09 iscsiadm[2381]: Logging in to [iface: default, target: iqn.2002-03.com.compellent:5000d31000cf0920, portal: 10.0.12.5,3260] (multiple)
Jun 25 20:38:57 p09 iscsiadm[2381]: Logging in to [iface: default, target: iqn.2002-03.com.compellent:5000d31000cf091e, portal: 10.0.12.5,3260] (multiple)
Jun 25 20:38:57 p09 iscsiadm[2381]: Logging in to [iface: default, target: iqn.2002-03.com.compellent:5000d31000cf091d, portal: 10.0.12.2,3260] (multiple)
Jun 25 20:38:57 p09 iscsiadm[2381]: Login to [iface: default, target: iqn.2002-03.com.compellent:5000d31000cf091f, portal: 10.0.12.2,3260] successful.
Jun 25 20:38:57 p09 iscsiadm[2381]: Login to [iface: default, target: iqn.2002-03.com.compellent:5000d31000cf0920, portal: 10.0.12.5,3260] successful.
Jun 25 20:38:57 p09 iscsiadm[2381]: Login to [iface: default, target: iqn.2002-03.com.compellent:5000d31000cf091e, portal: 10.0.12.5,3260] successful.
Jun 25 20:38:57 p09 iscsiadm[2381]: Login to [iface: default, target: iqn.2002-03.com.compellent:5000d31000cf091d, portal: 10.0.12.2,3260] successful.
Jun 25 20:38:56 p09 systemd[1]: Started Login to default iSCSI targets.

And multipath.conf is

defaults {
polling_interval 2
path_selector "round-robin 0"
path_grouping_policy multibus
uid_attribute ID_SERIAL
rr_min_io 100
failback immediate
no_path_retry queue
user_friendly_names yes
}
blacklist {
devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
devnode "^(td|hd)[a-z]"
devnode "^dcssblk[0-9]*"
devnode "^cciss!c[0-9]d[0-9]*"
device {
vendor "DGC"
product "LUNZ"
}
device {
vendor "EMC"
product "LUNZ"
}
device {
vendor "IBM"
product "Universal Xport"
}
device {
vendor "IBM"
product "S/390.*"
}
device {
vendor "DELL"
product "Universal Xport"
}
device {
vendor "SGI"
product "Universal Xport"
}
device {
vendor "STK"
product "Universal Xport"
}
device {
vendor "SUN"
product "Universal Xport"
}
device {
vendor "(NETAPP|LSI|ENGENIO)"
product "Universal Xport"
}
}
blacklist_exceptions {
wwid "3600144f028f88a0000005037a95d0001"
}
multipaths {
multipath {
wwid "3600144f028f88a0000005037a95d0001"
alias test
}
}

 

[alexskysilk]

You need to add your devices; all the device strings you have listed are for hardware you dont have. you can use combinations of vendor, product, or wwns.) you can get these from blkid.

 

[LnxBil]

Please see here.