Solaris Volume Manger SVM - Metadevices Going Into Maintenance Mode Without Any Related Disk/Component I/O Errors (Doc ID 1544646.1)

Last updated on NOVEMBER 29, 2016

Applies to:

Sun Solaris Volume Manager (SVM) - Version 11.9.0 to 11.11 [Release 11.0]
Oracle Solaris on SPARC (32-bit)
Oracle Solaris on SPARC (64-bit)
Oracle Solaris on x86-64 (64-bit)
Oracle Solaris on x86 (32-bit)

Symptoms

After putting the boot disk under Solaris Volume Manager (SVM) control, md_write and md_read errors are seen during reboot and the metadevices are placed into maintenance.

You may see similar messages as these snippets shown below:

These are simple SVM '1-way mirrors' and as such, SVM will put them into 'last erred' state and allow I/O's to continue. Attempts to recover by attaching another submirror fail.

Changes

Recent Live-Upgrade from 5.9 -> 5.10 using c0t1d0 slice 4 (new_root) and 5 (new_var) for the alternate boot environment (ABE). 

Cause

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