[OmniOS-discuss] Panic when trying to remove an unused LUN with stmfadm

[Stephan Budach]

Hi,

I have experienced this issue a couple of times now. First in r016 but 
just today on r018, too. When trying to remove a LUN by issueing 
something like

root at nfsvmpool05:/root# stmfadm delete-lu 600144F04E4653564D504F4F4C303538
packet_write_wait: Connection to 10.11.14.49: Broken pipe
Shared connection to nfsvmpool05 closed.

the system hung up. When it came back online, I was able to remove that 
LUN without any issue. The fun thing is, that I created that LUN just 
before and it hadn't even been in use, as it hadn't been attached to any 
view.

The syslog shows the usual COMSTAR thingy about kernel heap corruption, 
which I encountered already a couple of times, although in rather normal 
operation mode.

Apr 16 10:17:15 nfsvmpool05 genunix: [ID 478202 kern.notice] kernel 
memory allocator:
Apr 16 10:17:15 nfsvmpool05 unix: [ID 836849 kern.notice]
Apr 16 10:17:15 nfsvmpool05 ^Mpanic[cpu6]/thread=ffffff0e495c4880:
Apr 16 10:17:15 nfsvmpool05 genunix: [ID 812275 kern.notice] kernel heap 
corruption detected
Apr 16 10:17:15 nfsvmpool05 unix: [ID 100000 kern.notice]
Apr 16 10:17:15 nfsvmpool05 genunix: [ID 802836 kern.notice] 
ffffff003df44ae0 fffffffffba4e8d4 ()
Apr 16 10:17:15 nfsvmpool05 genunix: [ID 655072 kern.notice] 
ffffff003df44b20 genunix:kmem_free+1a8 ()
Apr 16 10:17:15 nfsvmpool05 genunix: [ID 655072 kern.notice] 
ffffff003df44b60 stmf:stmf_deregister_lu+1a7 ()
Apr 16 10:17:15 nfsvmpool05 genunix: [ID 655072 kern.notice] 
ffffff003df44ba0 stmf_sbd:sbd_delete_locked_lu+95 ()
Apr 16 10:17:15 nfsvmpool05 genunix: [ID 655072 kern.notice] 
ffffff003df44c00 stmf_sbd:sbd_delete_lu+a9 ()
Apr 16 10:17:15 nfsvmpool05 genunix: [ID 655072 kern.notice] 
ffffff003df44c80 stmf_sbd:stmf_sbd_ioctl+292 ()
Apr 16 10:17:15 nfsvmpool05 genunix: [ID 655072 kern.notice] 
ffffff003df44cc0 genunix:cdev_ioctl+39 ()
Apr 16 10:17:15 nfsvmpool05 genunix: [ID 655072 kern.notice] 
ffffff003df44d10 specfs:spec_ioctl+60 ()
Apr 16 10:17:15 nfsvmpool05 genunix: [ID 655072 kern.notice] 
ffffff003df44da0 genunix:fop_ioctl+55 ()
Apr 16 10:17:15 nfsvmpool05 genunix: [ID 655072 kern.notice] 
ffffff003df44ec0 genunix:ioctl+9b ()
Apr 16 10:17:15 nfsvmpool05 genunix: [ID 655072 kern.notice] 
ffffff003df44f10 unix:brand_sys_sysenter+1c9 ()
Apr 16 10:17:15 nfsvmpool05 unix: [ID 100000 kern.notice]
Apr 16 10:17:15 nfsvmpool05 genunix: [ID 672855 kern.notice] syncing 
file systems...
Apr 16 10:17:15 nfsvmpool05 genunix: [ID 904073 kern.notice]  done
Apr 16 10:17:16 nfsvmpool05 genunix: [ID 111219 kern.notice] dumping to 
/dev/zvol/dsk/rpool/dump, offset 65536, content: kernel
Apr 16 10:17:16 nfsvmpool05 ahci: [ID 405573 kern.info] NOTICE: ahci0: 
ahci_tran_reset_dport port 1 reset port
Apr 16 10:20:46 nfsvmpool05 genunix: [ID 100000 kern.notice]
Apr 16 10:20:46 nfsvmpool05 genunix: [ID 665016 kern.notice] ^M100% 
done: 1153955 pages dumped,
Apr 16 10:20:46 nfsvmpool05 genunix: [ID 851671 kern.notice] dump succeeded

Fortuanetly this time, there has been a debug kernel running, as Dan 
suggested on former occurances and I do have a dump at hand, which I 
could upload to uploads.omniti.com, if I'd get a token to do so.

@Dan, may I get one?

Thanks,
Stephan