mc admin heal

Description

The mc admin heal command scans for objects that are damaged or corrupted and heals those objects.

mc admin heal is resource intensive and typically not required as a manual process, even after drive failures or corruption events.

As a part of normal operations, MinIO:

• automatically heals objects damaged by silent bit rot corruption, drive failure, or other issues on each POST or GET operation.
• performs periodic background object healing using the scanner.
• aggressively heals objects after drive replacement.

Refer to Object Healing for more details on how MinIO heals objects.

Syntax

mc admin heal has the following syntax:

mc admin heal [FLAGS] TARGET             \
                      [--all-drives, -a] \
                      [--force]          \
                      [--verbose, -v]

mc admin heal supports the following arguments:

TARGET

mc-cmd

Required

The full path to the bucket or bucket prefix on which the command should perform object healing. Specify the alias of a configured MinIO deployment as the prefix for the path. For example:

mc admin heal play/mybucket/myprefix

If the TARGET bucket or bucket prefix has an active healing scan, the command returns the status of that scan.

--all-drives, -a

mc-cmd

Optional

Select all drives and show verbose information.

--force

mc-cmd

Optional

Disables warning prompts.

--verbose, -v

mc-cmd

Optional

Show information about offline and faulty healing drives.

Healing Colors

Some versions of MinIO used a color key as a way to differentiate objects with different healing statuses.

The color meaning has been updated.

• Green indicates the bucket is healthy.
• Yellow indicates the bucket requires healing on one or more drives.
• Red indicates one or more drives are unhealthy.
• Grey indicates an indeterminate healing state.