Ceph » ceph-volume

When requesting json output from ceph volume errors (and maybe other messages) are printed to stdout. this results in tools parsing this output to see invalid json.

This was observed with the inventory subcommand, but I assume other subcommands show the same behaviour.

Example output:

 % ceph-volume inventory --format json 2>/dev/null 
--> Falling back to /tmp/ for logging. Can't use /var/log/ceph/ceph-volume.log
--> [Errno 13] Permission denied: '/var/log/ceph/ceph-volume.log'
 stderr: blkid: error: /dev/mapper/cryptswap: Permission denied
 stderr: blkid: error: /dev/mapper/cryptroot: Permission denied
 stderr: blkid: error: /dev/sda: Permission denied
 stderr: blkid: error: /dev/sda2: Permission denied
 stderr: blkid: error: /dev/sda3: Permission denied
 stderr: blkid: error: /dev/sda1: Permission denied
[{"path": "/dev/mapper/cryptroot", "sys_api": {"removable": "0", "ro": "0", "vendor": "", "model": "", "rev": "", "sas_address": "", "sas_device_handle": "", "sectors": 0, "size": 494403919360.0, "support_discard": "", "partitions": {}, "rotational": "0", "nr_requests": "128", "scheduler_mode": "", "sectorsize": "512", "human_readable_size": "460.45 GB", "path": "/dev/mapper/cryptroot", "locked": 1}, "available": false, "rejected_reasons": ["locked"], "lvs": []}, {"path": "/dev/mapper/cryptswap", "sys_api": {"removable": "0", "ro": "0", "vendor": "", "model": "", "rev": "", "sas_address": "", "sas_device_handle": "", "sectors": 0, "size": 17177058816.0, "support_discard": "", "partitions": {}, "rotational": "0", "nr_requests": "128", "scheduler_mode": "", "sectorsize": "512", "human_readable_size": "16.00 GB", "path": "/dev/mapper/cryptswap", "locked": 1}, "available": false, "rejected_reasons": ["locked"], "lvs": []}, {"path": "/dev/sda", "sys_api": {"removable": "0", "ro": "0", "vendor": "ATA", "model": "SK hynix SC311 S", "rev": "0P10", "sas_address": "", "sas_device_handle": "", "sectors": 0, "size": 512110190592.0, "support_discard": "", "partitions": {"sda2": {"start": "1024000", "sectors": "965636751", "sectorsize": 512, "size": "460.45 GB", "holders": ["dm-0"]}, "sda3": {"start": "966662144", "sectors": "33553039", "sectorsize": 512, "size": "16.00 GB", "holders": ["dm-1"]}, "sda1": {"start": "2048", "sectors": "1021952", "sectorsize": 512, "size": "499.00 MB", "holders": []}}, "rotational": "0", "nr_requests": "64", "scheduler_mode": "mq-deadline", "sectorsize": "512", "human_readable_size": "476.94 GB", "path": "/dev/sda", "locked": 1}, "available": false, "rejected_reasons": ["locked"], "lvs": []}]