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Subject: RE: [2.6] Perl weirdness with ext3 and HTREE - Verified ?
From: Martin Schlemmer <azarah@gentoo.org>
Reply-To: azarah@gentoo.org
To: Christopher Li <chrisl@vmware.com>
Cc: KML <linux-kernel@vger.kernel.org>, akpm@digeo.com, adilger@clusterfs.com,
       ext3-users@redhat.com, x86-kernel@gentoo.org
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On Fri, 2003-08-08 at 21:50, Christopher Li wrote:
> Thanks, that script has successfully massed up my box.
> I will play with it in the weekend.
>=20

Great (don't take this badly =3D) ), at least now it is not a
'local' problem only.

I will also try to dig a bit deeper, but will only be this
afternoon (past 1am now, got home from work 2 hours back :().


Thanks,

> Chris
>=20
> > -----Original Message-----
> > From: Martin Schlemmer [mailto:azarah@gentoo.org]
> > Sent: Wednesday, August 06, 2003 3:28 PM
> > To: Christopher Li
> > Cc: KML; akpm@digeo.com; adilger@clusterfs.com; ext3-users@redhat.com;
> > x86-kernel@gentoo.org
> > Subject: RE: [2.6] Perl weirdness with ext3 and HTREE
> >=20
> >=20
> > On Wed, 2003-08-06 at 22:22, Christopher Li wrote:
> >=20
> > > > Just grab the perl source, if you want, I can mail you=20
> > the ebuild that
> > > > should give some direction in how to compile it, or grab=20
> > your local
> > > > .spec, configure it (maybe with install location not in=20
> > /), and then
> > > > just compile and finally install to a ext3 FS with HTREE enabled.=20
> > > > Usually over here, it keeps on leaving an invalid entry to
> > > > ..usr/share/man/man3/Hash::Util.tmp.
> > > >=20
> > >=20
> > > I am running 2.6-test2 kernel. Download the perl 5.8.0=20
> > (stable.tar.gz).
> > > ./Configure --prefix=3D/mnt/hdc3; make; make install.
> > >=20
> > > It did not happen for me. Hash::Util.3 was installed correctly.
> > > (Of course, I did turn on directory index)
> > >=20
> > > Can you send me more infomation how you build the perl package
> > > and install it? I guess I have to do more gentoo like step=20
> > to duplicate
> > > it :-)
> > >=20
> >=20
> > I have gotten a few of these while testing:
> >=20
> > -----------------------------------------
> > EXT3-fs warning (device hdc1): ext3_unlink: Deleting nonexistent file
> > (4759186), 0
> > Slab corruption: start=3Dcb147184, expend=3Dcb14736f, problemat=3Dcb147=
1f8
> > Last user: [<c019ae7f>](ext3_destroy_inode+0x1d/0x21)
> > Data:
> > **************************************************************
> > ******************************************************F4 F1=20
> > 15 F6=20
> > **************************************************************
> > **************************************************************
> > **************************************************************
> > **************************************************************
> > **************************************************************
> > *************************************************************A5
> > Next: 71 F0 2C .7F AE 19 C0 71 F0 2C .********************
> > slab error in check_poison_obj(): cache `ext3_inode_cache': object was
> > modified after freeing
> > Call Trace:
> >  [<c0141634>] check_poison_obj+0x161/0x1a1
> >  [<c0143128>] kmem_cache_alloc+0x11f/0x159
> >  [<c019ae46>] ext3_alloc_inode+0x18/0x34
> >  [<c019ae46>] ext3_alloc_inode+0x18/0x34
> >  [<c0171f74>] alloc_inode+0x1c/0x14d
> >  [<c01729db>] new_inode+0x1a/0xa2
> >  [<c0192207>] ext3_new_inode+0x41/0x6d8
> >  [<c014313c>] kmem_cache_alloc+0x133/0x159
> >  [<c01a0244>] new_handle+0x1c/0x4e
> >  [<c01992e4>] ext3_mkdir+0x74/0x2b6
> >  [<c01665dc>] permission+0x2f/0x4b
> >  [<c0168555>] vfs_mkdir+0x6d/0xbf
> >  [<c016865e>] sys_mkdir+0xb7/0xf7
> >  [<c010aaa5>] sysenter_past_esp+0x52/0x71
> >  =20
> > -----------------------------------------
> >=20
> > A more complete one is attached (just more similar ones).
> >=20
> > Attached is a script (test.sh) and a list of man page names=20
> > (list) that
> > I can recreate it without needing perl.  The list may or may not be
> > pruned some more, but I will try tonight again after some sleep ;)
> >=20
> > Here is a test run (note that it do the same with symlinks instead of
> > hard links):
> >=20
> > -----------------------------------------
> > nosferatu space # uname -a
> > Linux nosferatu 2.6.0-test2-bk5 #2 SMP Wed Aug 6 00:21:15=20
> > SAST 2003 i686
> > Intel(R) Pentium(R) 4 CPU 2.40GHz GenuineIntel GNU/Linux
> > nosferatu space # dumpe2fs /dev/hdc1 | grep features
> > dumpe2fs 1.34 (25-Jul-2003)
> > Filesystem features:      has_journal dir_index filetype=20
> > needs_recovery
> > sparse_super large_file
> > nosferatu space # pwd
> > /space
> > nosferatu space # mount | grep `pwd`
> > /dev/hdc1 on /space type ext3 (rw,noatime)
> > nosferatu space # ls foo/
> > ls: foo/: No such file or directory
> > nosferatu space # cat test.sh
> > #!/bin/bash
> > =20
> > i=3D1
> > =20
> > testdir=3D"`pwd`/foo"
> > =20
> > (rm -rf "$testdir"; rm -rf "$testdir") &>/dev/null
> > mkdir -p "$testdir"
> > =20
> > for x in $(cat list)
> > do
> >         temp=3D"$testdir/${x/3pm/tmp}"
> >         x=3D"$testdir/${x}"
> > =20
> >         touch "$temp"
> >         ln "$temp" "$x"
> >         rm -f "$temp"
> > =20
> > #       echo "Pass $i"
> > =20
> > #       i=3D$((i+1))
> > done
> > =20
> > nosferatu space # ./test.sh
> > nosferatu space # ls foo/
> > ls: foo/Win32.tmp: No such file or directory
> > Fcntl.3pm                    PerlIO::via.3pm
> > Hash::Util.3pm               PerlIO::via::QuotedPrint.3pm
> > I18N::Collate.3pm            Pod::Checker.3pm
> > I18N::LangTags.3pm           Pod::Find.3pm
> > I18N::LangTags::List.3pm     Pod::Html.3pm
> > I18N::Langinfo.3pm           Pod::InputObjects.3pm
> > IO.3pm                       Pod::LaTeX.3pm
> > IO::Dir.3pm                  Pod::Man.3pm
> > IO::File.3pm                 Pod::ParseLink.3pm
> > IO::Handle.3pm               Pod::ParseUtils.3pm
> > IO::Pipe.3pm                 Pod::Parser.3pm
> > IO::Poll.3pm                 Pod::Plainer.3pm
> > IO::Seekable.3pm             Pod::Select.3pm
> > IO::Select.3pm               Pod::Text.3pm
> > IO::Socket.3pm               Pod::Text::Color.3pm
> > IO::Socket::INET.3pm         Pod::Text::Overstrike.3pm
> > IO::Socket::UNIX.3pm         Pod::Text::Termcap.3pm
> > IPC::Msg.3pm                 Pod::Usage.3pm
> > IPC::Open2.3pm               SDBM_File.3pm
> > IPC::Open3.3pm               Safe.3pm
> > IPC::Semaphore.3pm           Scalar::Util.3pm
> > IPC::SysV.3pm                Search::Dict.3pm
> > List::Util.3pm               SelectSaver.3pm
> > Locale::Constants.3pm        SelfLoader.3pm
> > Locale::Country.3pm          Shell.3pm
> > Locale::Currency.3pm         Socket.3pm
> > Locale::Language.3pm         Storable.3pm
> > Locale::Maketext.3pm         Switch.3pm
> > Locale::Maketext::TPJ13.3pm  Symbol.3pm
> > Locale::Script.3pm           Sys::Hostname.3pm
> > MIME::Base64.3pm             Sys::Syslog.3pm
> > MIME::QuotedPrint.3pm        Term::ANSIColor.3pm
> > Math::BigFloat.3pm           Term::Cap.3pm
> > Math::BigFloat::Trace.3pm    Term::Complete.3pm
> > Math::BigInt.3pm             Term::ReadLine.3pm
> > Math::BigInt::Calc.3pm       Test.3pm
> > Math::BigInt::Trace.3pm      Test::Builder.3pm
> > Math::BigRat.3pm             Test::Harness.3pm
> > Math::Complex.3pm            Test::Harness::Assert.3pm
> > Math::Trig.3pm               Test::Harness::Iterator.3pm
> > Memoize.3pm                  Test::Harness::Straps.3pm
> > Memoize::AnyDBM_File.3pm     Test::More.3pm
> > Memoize::Expire.3pm          Test::Simple.3pm
> > Memoize::ExpireFile.3pm      Test::Tutorial.3pm
> > Memoize::ExpireTest.3pm      Text::Abbrev.3pm
> > Memoize::NDBM_File.3pm       Text::Balanced.3pm
> > Memoize::SDBM_File.3pm       Text::ParseWords.3pm
> > Memoize::Storable.3pm        Text::Soundex.3pm
> > NDBM_File.3pm                Text::Tabs.3pm
> > NEXT.3pm                     Text::Wrap.3pm
> > Net::Cmd.3pm                 Thread.3pm
> > Net::Config.3pm              Thread::Queue.3pm
> > Net::Domain.3pm              Thread::Semaphore.3pm
> > Net::FTP.3pm                 Tie::Array.3pm
> > Net::FTP::A.3pm              Tie::File.3pm
> > Net::FTP::E.3pm              Tie::Handle.3pm
> > Net::FTP::I.3pm              Tie::Hash.3pm
> > Net::FTP::L.3pm              Tie::Memoize.3pm
> > Net::FTP::dataconn.3pm       Tie::RefHash.3pm
> > Net::NNTP.3pm                Tie::Scalar.3pm
> > Net::Netrc.3pm               Tie::SubstrHash.3pm
> > Net::POP3.3pm                Time::HiRes.3pm
> > Net::Ping.3pm                Time::Local.3pm
> > Net::SMTP.3pm                Time::gmtime.3pm
> > Net::Time.3pm                Time::localtime.3pm
> > Net::hostent.3pm             Time::tm.3pm
> > Net::libnetFAQ.3pm           UNIVERSAL.3pm
> > Net::netent.3pm              Unicode::Collate.3pm
> > Net::protoent.3pm            Unicode::Normalize.3pm
> > Net::servent.3pm             Unicode::UCD.3pm
> > O.3pm                        User::grent.3pm
> > Opcode.3pm                   User::pwent.3pm
> > POSIX.3pm                    Win32.3pm
> > PerlIO.3pm                   XS::APItest.3pm
> > PerlIO::encoding.3pm         XS::Typemap.3pm
> > PerlIO::scalar.3pm           XSLoader.3pm
> > nosferatu space #
> > ----------------------------------
> >=20
> >=20
> > Thanks,
> >=20
> > --=20
> >=20
> > Martin Schlemmer
> >=20
> >=20
> >=20
> >=20
--=20

Martin Schlemmer




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