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for provisioning ubuntu trusty on baremetal, cloud-init fails to grow root
partition, below is the error.
physical server is HP bl460c blade , booting from SAN and using multipath ,
====================================
- cc_growpart.py[DEBUG]: No 'growpart' entry in cfg. Using default:
{'ignore_growroot_disabled': False, 'mode': 'auto', 'devices': ['/']}
- util.py[DEBUG]: Running command ['growpart', '--help'] with allowed return
codes [0] (shell=False, capture=True)
- util.py[DEBUG]: Reading from /proc/1005/mountinfo (quiet=False)
- util.py[DEBUG]: Read 1121 bytes from /proc/1005/mountinfo
- util.py[DEBUG]: resize_devices took 0.003 seconds
- cc_growpart.py[DEBUG]: '/' SKIPPED:
device_part_info(/dev/disk/by-label/cloudimg-rootfs) failed:
/dev/disk/by-label/cloudimg-rootfs not a partition
====================================
upon checking seems like cc_growpart.py script is relying on
"/sys/class/block/device-name/partition" file to check number of
partitions.
but for dm multipath devices , there is no such "partition" attribute
exists, hence script error out saying "not a partition".
I do not have any solution for now, but trying to find how to map multipath
device like /dev/dm-1 to it's real scsi disk /dev/sda1 .. if that's figured
out then we can put some logic to say if base name is dm-x then find mapped
sdx and use that device to find a partition etc.
is this just me or someone else also has this issue with cloud-init
failing on multipath disks.
** Affects: cloud-init
Importance: Medium
Status: Triaged
** Affects: cloud-init (Ubuntu)
Importance: Undecided
Status: New
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cloud-init fails to grow disk on physical servers with multipath.
https://bugs.launchpad.net/bugs/1556260
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