[Bug 211990] iscsi fails to reconnect and does not release devices

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=211990

--- Comment #25 from Julien Cigar <julien at perdition.city> ---
(In reply to Steven Hartland from comment #24)

I don't have any mention of nmbjumbo9 in /var/log/messages, I haven't raised
kern.ipc.nmbjumbo9 yet, currently it's:

root at filer1:/var/log # sysctl kern.ipc.nmbjumbo9
kern.ipc.nmbjumbo9: 222225

but it does not seem necessary to raise it if I can trust netstat -m:

root at filer1:/var/log # netstat -m
1282/6533/7815 mbufs in use (current/cache/total)
1024/3564/4588/500010 mbuf clusters in use (current/cache/total/max)
1024/3431 mbuf+clusters out of packet secondary zone in use (current/cache)
0/161/161/250005 4k (page size) jumbo clusters in use (current/cache/total/max)
256/120/376/74075 9k jumbo clusters in use (current/cache/total/max)
0/0/0/41667 16k jumbo clusters in use (current/cache/total/max)
4672K/10485K/15157K bytes allocated to network (current/cache/total)
0/0/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters)
0/0/0 requests for mbufs delayed (mbufs/clusters/mbuf+clusters)
0/0/0 requests for jumbo clusters delayed (4k/9k/16k)
0/304/0 requests for jumbo clusters denied (4k/9k/16k)
0 requests for sfbufs denied
0 requests for sfbufs delayed
0 requests for I/O initiated by sendfile

(the box isn't heavily loaded)

what I don't understand if why there are requests for 4k jumbo clusters denied
as there are plenty free .. ?

could it be related to this change:
https://svnweb.freebsd.org/base/head/sys/dev/bge/if_bge.c?r1=276299&r2=276750 ?

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