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man pages section 8: System Administration Commands

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Updated: Thursday, June 13, 2019
 
 

shadowd(8)

Name

shadowd - shadow migration daemon

Synopsis

/usr/lib/fs/shadowd 
svc:/system/filesystem/shadowd:default

Description

shadowd is a daemon that provides background worker threads to migrate data for a shadow migration. A shadow migration gradually moves data from a source file system into a new “shadow” file system. Users can access and change their data within the shadow file system while migration is occurring.

The shadowd service is managed by the service management facility, smf(7). Administrative actions on this service, such as enabling, disabling, or requesting restart, can be performed using svcadm(8). The service's status can be queried using the svcs(1) command.

The svccfg(8) command can be used to manage the following parameter related to shadowd:

config_params/shadow_threads

Number of threads to devote to background migration of data. These threads are global to the entire system, and increasing the number can increase concurrency and the overall speed of migration at the expense of increased resource consumption (network, I/O, and CPU).

Attributes

See attributes(7) for descriptions of the following attributes:

ATTRIBUTE TYPE
ATTRIBUTE VALUE
Availability
system/file-system/shadow-migration
Interface Stability
Unstable

See Also

attributes(7), shadowstat(8), zfs(8)