10-01-2014
An mksysb image is basically a savevg rootvg, along with some additional data to make it bootable and installable. For the savevg command to succeed it needs to know exactly your VG layout down to the single filesystems. Have you tried mkszfile before taking the mksysb (or calling mksysb with the "-i" flag, which has the same effect)? Maybe your rootvg layout (in terms LVs and their sizes) have changed? This can have strange effects.
I hope this helps.
bakunin
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CYC(3) Library Functions Manual CYC(3)
NAME
cyc - Cyclone fiber interface
SYNOPSIS
bind #C /dev
/dev/cyc
DESCRIPTION
The cyc device drives the Cyclone CVME961 (not 960) card with an attached SQFBR Squall module to provide a high-speed point-to-point 9P
link between a CPU server and a file server. Both machines must of course have VME buses. For debugging, the Cyclone may be loaded with
on-board software using xms (see con(1)) and the NINDY ROM supplied with the device. In production, though, it is easiest to replace the
ROM with the program in the directory /sys/src/fs/cyc. In either case, the on-board software expects an identical Cyclone to be at the
other end of the fiber. One of the boards must be in a CPU server, the other in a file server; the systems configure their respective
boards dynamically as appropriate.
The driver serves a single file, /dev/cyc. When opened, the file initializes the connection to the file server. The resulting file
descriptor should be used only to send and receive 9P messages. Typically boot(8) will open /dev/cyc, prime the connection by sending nop
and session messages (see attach(5)), and then mount (see bind(2)) the file descriptor in the CPU server's name space. Thenceforth all
activity on /dev/cyc will be mediated by the mount driver mnt(3)).
FILES
/sys/src/fs/cyc
Directory of on-board software for the Cyclone.
SEE ALSO
CVME960, CVM961 Single Board Computer User's Manual and SQFBR User's Manual, Cyclone Microsystems, Inc., New Haven, CT, 1-203-7865536
SOURCE
/sys/src/9/power/devcyc.c
BUGS
The driver is specific to the SGI Power Series, although the device should operate on any VME bus.
CYC(3)