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Date:      Sat, 11 Mar 2006 11:49:26 +0300
From:      "Eugene" <genie@geniechka.ru>
To:        <freebsd-fs@freebsd.org>
Subject:   Dump/snapshot problems
Message-ID:  <004c01c644e8$c05c8c70$1b12c055@genie>

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Hi people,

Sometimes I have strange problems with dump -- or, rather, with snapshot it
makes.
System is FreeBSD 5.3, default kernel configuration

Two types of problems:
1) System hangs or at least not accessible over the network and has to be
physically reset. Last message on console
Collecting pv entries -- suggest increasing PMAP_SHPGPERPROó
maxproc limit exceeded by id(0), please see tuning(7) and login.conf(5)

Question: what exactly should I tune?

2) Dump process dies with message
mksnap_ffs: Cannot create //.snap/dump_snapshot: Resource temporarily
unavailable
dump: Cannot create //.snap/dump_snapshot: No such file or directory

dmesg message
fsync: giving up on dirty: 0xc57b5d68: tag devfs, type VCHR, usecount 60263,
writecount 0, refcount 960, flags (VV_OBJBUF), lock type devfs: EXCL
(count 1) by thread 0xc610f7d0 (pid 87575)
dev ad4s1a

What is wrong?  What is '0xc57b5d68' (number is repeating)?

Thanks in advance
Eugene




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