Hi Max,
I don't think mdb is the utility you are looking for, from the mdb(1)
man page -
The mdb utility is an extensible utility for low-level
debugging and editing of the live operating system, operat-
ing system crash dumps, user processes, user process core
dumps, and object files.
As far as ufs is concerned, have you tried using fsdb? Check out the
fsdb_ufs(1M) man page. I am not aware of a similar utility for zfs, but
someone else here may be.
Hope this helps.
Phill
max at bruningsystems.com wrote:
> Hi.
>
> I want to be able to use ::print some_type_in_kernel with the raw disk
> as a target. Has anyone already done this, or do I need to write code?
> Here is an example of what I want to do:
>
> # mdb /dev/rdsk/c1t0d0s0 <-- device contains a ufs (or zfs) file system
> physical_disk_address::print -p struct icommon <-- given address of
> inode on disk, print it out
>
> (Yes, I know struct icommon does not work for zfs...).
>
> I am currently using mdb on a zfs disk, but have to dump raw hex and try
> to map it to a dnode_phys_t, blk_dva, etc by comparing with the same
> output with mdb -k. If I know (or think I know) what the data type is on
> the disk, it would be great if I could tell mdb to dump it out.
>
> I have tried loading the zfs module within mdb, but that doesn't help.
> And using mdb -k /dev/rdsk/c1t0d0s0 doesn't work because
> /dev/rdsk/c1t0d0s0 is not an ELF file. Maybe this is as simple as
> turning off mdb's error checking???
>
> thanks,
> max
>
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