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Solstice DiskSuite 4.2.1 User's Guide

Mirror and Submirror Status (DiskSuite Tool)

A Mirror object has two Status fields: one for the mirror device itself, and individual Status fields for each submirror. The Status field for a mirror, as explained in Table 3-3, gives a high-level status.

Table 3-3 Mirror Status Keywords

Keyword 

Meaning 

OK 

The mirror has no errors and is functioning correctly. 

Attention 

A submirror has a problem, but there is no immediate danger of losing data. There are still two copies of the data (the mirror is three-way mirror and only one submirror failed), or a hot spare has kicked in. 

Urgent 

The mirror contains only a single good submirror, providing only one copy of the data. The mirror is only one failure away from losing data. 

Critical 

All submirrors have errors and data has potentially been corrupted. 

Table 3-4 shows the Status fields of submirrors, and possible actions to take.

Table 3-4 Submirror Status Keywords

Keyword 

Meaning 

Action 

OK 

The submirror has no errors and is functioning correctly. 

None. 

Resyncing 

The submirror is actively being resynced.  

None. An error has occurred and been corrected, the submirror has just been brought back online, or a new submirror has been added. 

Component Resyncing 

A slice in the submirror is actively being resynced. 

None. Either a hot spare slice or another slice has replaced an errored slice in the submirror. 

Attaching 

The submirror is being attached. 

None. 

Attached (resyncing) 

The entire submirror is being resynced after the attach occurred. 

None. 

Online (scheduled) 

The submirror will be brought online the next time you click Commit. 

Click the Commit button to enable the submirror. 

Offline (scheduled) 

The submirror will be brought offline the next time you click Commit. 

Click the Commit button to offline the submirror. 

Offlined 

The submirror is offline. 

When appropriate, bring the submirror back online, for example, after performing maintenance. See "How to Place a Submirror Offline and Online (DiskSuite Tool)".

Maintenance 

The submirror has an error. 

Repair the submirror. You can fix submirrors in the "Errored" state in any order. See "How to Enable a Slice in a Submirror (DiskSuite Tool)", or "How to Replace a Slice in a Submirror (DiskSuite Tool)".

Last Erred 

The submirror has errors, and data for the mirror has potentially been corrupted. 

Fix submirrors in the "Maintenance" state first, then fix the submirror in the "Last Erred" state. See "How to Enable a Slice in a Submirror (DiskSuite Tool)", or "How to Replace a Slice in a Submirror (DiskSuite Tool)". After fixing the error, validate the data.

Note -

DiskSuite does not retain state and hot spare information for simple metadevices that are not submirrors.