... | ... | @@ -680,6 +680,28 @@ machine, see [resizing under LVM](#resizing-under-lvm), [resizing without LVM, n |
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partitions](#resizing-without-lvm-no-partitions), or [Resizing without LVM, with partitions](#resizing-without-lvm-with-partitions),
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depending on the situation.
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### Removing an iSCSI LUN
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Use this procedure before to a virtual disk from one of the iSCSI SANs.
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First, remove the multipath config and reload:
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gnt-cluster command rm /etc/multipath/conf.d/test-01.conf
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gnt-cluster command "multipath -r ; multipath -w <disk-wwid> ; multipath -r"
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Then, remove the iSCSI device nodes. Running `iscsiadm --rescan` does not remove
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LUNs which have been deleted from the SAN.
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Be very careful with this command, it will delete device nodes without prejudice
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and cause data corruption if they are still in use!
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gnt-cluster command "find /dev/disk/by-path/ -name \*<san-wwid>-lun-<lun> -exec readlink {} \; | cut -d/ -f3 | while read -d $'\n' n; do echo 1 > /sys/block/\$n/device/delete; done"
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Finally, the disk group can be deleted from the SAN (all the virtual disks it
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contains will be deleted):
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SMcli -n chi-san-03 -p $SAN_PASSWORD -S -quick -c "delete diskGroup [<disk-group-number>];"
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### Adding disks
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A disk can be added to an instance with the `modify` command as
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