My Oracle Support Banner

Sun StorageTek[TM] Availability Suite: Remote Mirror Fails with rdc_resume_state: Bad magic message (Doc ID 1002286.1)

Last updated on JULY 31, 2019

Applies to:

Sun Storage Network Data Replicator (SNDR) - Version 3.0.1 and later
Sun Storage Availability Suite - Version 4.0 and later
All Platforms


During a system reboot, Availability Suite Remote Mirror Software reports the message:
rdc: [ID xxxx kern.warning] WARNING: rdc_free_bitmap: Read header failed

and consequently reports the following message as the system is coming up:

Dec  4 19:03:39 myhost rdc: [ID 766594 kern.warning] WARNING: rdc_resume_state: Bad magic in /dev/vx/rdsk/mydg/my_bitmap

This leads to a bitmap failed or BF state in the output of sndrstat, dsstat, sndradm -P, and sndradm -p, on the
host where the messages appear.

The following is a sample of the sndradm -P output:

/dev/vx/rdsk/asdbdg/FS_fmacread          <- myhost:/dev/vx/rdsk/mydg/myvol
autosync: off, max q writes: 4194304, max q fbas: 16384, mode: async, state: bitmap failed



 System is rebooted using the "reboot" command (not recommended) or an unexpected reboot occurred


To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.