Applying 127127-11 to Primary Domain on Ldoms System Causes Guest Domains with SVM Mirrors to Panic (Doc ID 1019595.1)

Last updated on DECEMBER 19, 2023

Applies to:

Symptoms

Applying 127127-11 to primary domain on ldoms system causes guest domains with SVM mirrors to panic.

Immediately after applying kernel patch 127127-11 to the S10U4 primary domain OS while in a boot -s environment and rebooting the primary domain,
previously working guest domains which had SVM mirrors configured inside the guests (on top of virtual disks backended by disk image files on ufs) are at first "unresponsive" and cannot be logged into.

The unresponsiveness may appear as below where no login prompt is given, or it may give the login / password prompt and then go unresponsive.
Cannot login to the guest domain at all at this point. After a break is set to the guest domains, the domains panic on each attempted boot:

The guest domains will no longer boot and fail each time with the above vfs_mountroot errors.

Booting the guest domain from the network into single user mode and disabling SVM by removing the rootdev entry from /etc/system and changing the vfstab to mount the logical /dev/dsk/ devices instead of SVM metadevices allows the guest domain to boot successfully again.

Also leaving guest domains configured with SVM and removing kernel patch 127127-11 from the primary domain so that is back to 120011-14 and rebooting primary -> guest domains will boot properly from their mirrored root virtual disks.

Cause