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Merge pull request #324 from cyphar/libdm-debug-flag-docs 

docs: add documentation for dm.libdm_log_level
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Sebastiaan van Stijn 2017-07-14 00:58:38 -07:00 committed by GitHub
parent e3746d388e c7710819a5
commit de4c546b7e
2 changed files with 53 additions and 0 deletions
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28
docs/reference/commandline/dockerd.md
View File

@ -700,6 +700,34 @@ ENOSPC and will shutdown filesystem.
$ sudo dockerd --storage-opt dm.xfs_nospace_max_retries=0
```
##### `dm.libdm_log_level`
Specifies the maxmimum `libdm` log level that will be forwarded to the
`dockerd` log (as specified by `--log-level`). This option is primarily
intended for debugging problems involving `libdm`. Using values other than the
defaults may cause false-positive warnings to be logged.
Values specified must fall within the range of valid `libdm` log levels. At the
time of writing, the following is the list of `libdm` log levels as well as
their corresponding levels when output by `dockerd`.
| `libdm` Level | Value | `--log-level` |
| ------------- | -----:| ------------- |
| `_LOG_FATAL` | 2 | error |
| `_LOG_ERR` | 3 | error |
| `_LOG_WARN` | 4 | warn |
| `_LOG_NOTICE` | 5 | info |
| `_LOG_INFO` | 6 | info |
| `_LOG_DEBUG` | 7 | debug |
###### Example
```bash
$ sudo dockerd \
--log-level debug \
--storage-opt dm.libdm_log_level=7
```
#### ZFS options
##### `zfs.fsname`

25
man/dockerd.8.md
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@ -703,6 +703,31 @@ Example use:
$ sudo dockerd --storage-opt dm.xfs_nospace_max_retries=0
##### dm.libdm_log_level
Specifies the maxmimum libdm log level that will be forwarded to the dockerd
log (as specified by --log-level). This option is primarily intended for
debugging problems involving libdm. Using values other than the defaults may
cause false-positive warnings to be logged.
Values specified must fall within the range of valid libdm log levels. At the
time of writing, the following is the list of libdm log levels as well as their
corresponding levels when output by dockerd.
| libdm Level | Value | --log-level |
| ----------- | -----:| ----------- |
| _LOG_FATAL | 2 | error |
| _LOG_ERR | 3 | error |
| _LOG_WARN | 4 | warn |
| _LOG_NOTICE | 5 | info |
| _LOG_INFO | 6 | info |
| _LOG_DEBUG | 7 | debug |
Example use:
$ sudo dockerd \
--log-level debug \
--storage-opt dm.libdm_log_level=7
## ZFS options