Date: Wed, 12 Nov 2008 21:47:35 +0200 From: Kostik Belousov <kostikbel@gmail.com> To: Tim Bishop <tim-lists@bishnet.net> Cc: tim@bishnet.net, freebsd-stable@freebsd.org Subject: Re: System deadlock when using mksnap_ffs Message-ID: <20081112194735.GK47073@deviant.kiev.zoral.com.ua> In-Reply-To: <20081112175826.GD26195@carrick.bishnet.net>
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[-- Attachment #1 --] On Wed, Nov 12, 2008 at 05:58:26PM +0000, Tim Bishop wrote: > I've been playing around with snapshots lately but I've got a problem on > one of my servers running 7-STABLE amd64: > > FreeBSD paladin 7.1-PRERELEASE FreeBSD 7.1-PRERELEASE #8: Mon Nov 10 20:49:51 GMT 2008 tdb@paladin:/usr/obj/usr/src/sys/PALADIN amd64 > > I run the mksnap_ffs command to take the snapshot and some time later > the system completely freezes up: > > paladin# cd /u2/.snap/ > paladin# mksnap_ffs /u2 test.1 > > It only happens on this one filesystem, though, which might be to do > with its size. It's not over the 2TB marker, but it's pretty close. It's > also backed by a hardware RAID system, although a smaller filesystem on > the same RAID has no issues. > > Filesystem 1K-blocks Used Avail Capacity Mounted on > /dev/da0s1a 2078881084 921821396 990749202 48% /u2 > > To clarify "completely freezes up": unresponsive to all services over > the network, except ping. On the console I can switch between the ttys, > but none of them respond. The only way out is to hit the reset button. > > Any advice? I'm happy to help debug this further to get to the bottom of > it. You need to provide information described in the http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug.html and especially http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug-deadlocks.html [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (FreeBSD) iEYEARECAAYFAkkbMtcACgkQC3+MBN1Mb4hFIwCfU83Ua1RUyIADKc0JSPVUjTSc m2EAoNY8eRCXqdew+m5Ir7Adhu/K85Vs =1MY2 -----END PGP SIGNATURE-----help
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