File system full, won't complete boot

Hello,

I have a very old hp rp2450 running 11i2 that I had to power off. When turning it back on it hangs with the following message. Would booting into SUM get me any further? I've never used SUM, so I'm asking before I go down that rabbit hole.

Thanks for the help.

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Processor is booting from first available device.

To discontinue, press any key within 10 seconds.

10 seconds expired.
Proceeding...

Trying Primary Boot Path
------------------------
Booting... 
Boot IO Dependent Code (IODC) revision 1


HARD Booted.

ISL Revision A.00.44  Mar 12, 2003 

ISL booting  hpux

Boot
: disk(0/0/1/1.15.0.0.0.0.0;0)/stand/vmunix
14381056 + 4435968 + 4290184 start 0x230ee8

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msgcnt 2 vxfs: mesg 001: vx_nospace - /dev/vg00/lvol10 file system full (1 block extent)
msgcnt 1 vxfs: mesg 001: vx_nospace - /dev/vg00/lvol10 file system full (1 block extent)
VxVM  WARNING V-5-1-9668 CmdLog: write failed - No space left on device
VxVM  WARNING V-5-1-9668 CmdLog: write failed - No space left on device

     HP-UX Start-up in progress
     __________________________

     Configure system crash dumps ........................................ OK
     VxVM INFO V-5-2-3360 VxVM device node check ......................... OK
     VxVM INFO V-5-2-3362 VxVM general startup ........................... OK
     VxVM INFO V-5-2-3366 VxVM reconfiguration recovery .................. OK
     Mount file systems .................................................. OK
     Setting hostname .................................................... OK
     Start Kernel Logging facility ....................................... OK
     Set privilege group ................................................. N/A 
     Display date ........................................................ N/A 
     Copy processor logs to /var/tombstones .............................. OK
     Save system crash dump if needed .................................... N/A 
     Start evp ........................................................... OK
     Enable auxiliary swap space ......................................... OK
     Start syncer daemon ................................................. OK
     Start Utmp Daemon : manages User Accounting Database ................ OK
     Configure Loopback interfaces (lo0) ................................. 
msgcnt 3 vxfs: mesg 001: vx_nospace - /dev/vg00/lvol10 file system full (1 block extent)

I think you have no other choice than to go and boot in single user or in maintenance (LVM) mode (better) what does this lvol contain?