On Feb 23, 2012, at 6:48 PM, Sami Liedes wrote:

> Package: e2fsprogs
> Version: 1.42.1-1
> Severity: normal
> 
> When investigating why e2resizing a 100G filesystem to 75G takes
> several hours of *CPU* time on a Core i7 computer (in the "Scanning
> inode table" phase -- you might get a bug report about that later if
> turning optimizations on doesn't help very much), I ran into the
> following:
> 
> The e2fsprogs-dbg package doesn't actually seem to include any debug
> information, *except* for e2fsck.static, which I'm at loss to explain,
> since I don't see any -g switches passed to gcc in my build logs for
> any gcc invokation when building e2fsprogs. Moreover, almost
> everything in the package is compiled without optimizations.

Yes, the bug was caused by the use of >& which isn't supported by dash.  I'll 
upload a fix for that shortly.  My apologies for not notching this before the 
1.41.1-1 release.

In the meantime you can workaround this by forcing the use of "bash" as your 
build shell instead of the default of dash.

-- Ted

> (By the way, the e2fsck.static debug info file is in wrong place,
> /usr/lib/debug/e2fsck.static instead of
> /usr/lib/debug/sbin/e2fsck.static, which causes it to not be found by
> various tools...)
> 
> After figuring out how to un-hide the relevant information cleverly
> hidden from build logs by modifying debian/rules to pass
> --enable-verbose-makecmds to configure, a few things jump out from the
> build logs. You can get the entire build log from [1]; here's just
> some excerpts with line numbers. To summarize:
> 
> * I think nothing is being built with -g
> 
> * I think that only the BF version, whatever that is (bootfloppies?),
>  is being built with -Os; all others are being built without any
>  optimization flags at all
> 
> * The debug info file for e2fsck.static is installed in a wrong
>  directory
> 
> [1] http://users.tkk.fi/sliedes/e2fsprogs_1.42.1-1_amd64.build
> 
>       Sami
> 
> 
> ------------------------------------------------------------
>  20 dpkg-source: info: building e2fsprogs in e2fsprogs_1.42.1-1.dsc
>  21  debian/rules build
>  22 /bin/sh: 1: Syntax error: Bad fd number
>  23 /bin/sh: 1: Syntax error: Bad fd number
>  24 /bin/sh: 1: Syntax error: Bad fd number
> ------------------------------------------------------------
> 
> That's scary...
> 
> ------------------------------------------------------------
>  29 cd /home/sliedes/scratch/rec/e/e2fsprogs-1.42.1/debian/BUILD-STD && 
> AWK=/usr/bin/awk \
>  30         /home/sliedes/scratch/rec/e/e2fsprogs-1.42.1/configure 
> --disable-e2initrd-helper --enable-elf-shlibs --enable-quota 
> --infodir=/usr/share/info --enable-verbose-makecmds --disable-fsck 
> --disable-libblkid --disable-libuuid --disable-uuidd --enable-symlink-install 
> --with-multiarch=x86_64-linux-gnu \
>  31         CFLAGS=" -D__NO_STRING_INLINES" CPPFLAGS="" LDFLAGS=""
> ------------------------------------------------------------
> 
> Note the curious CFLAGS passed. No -O, no -g.
> 
> ------------------------------------------------------------
>  1104 /bin/sh: 1: Syntax error: Bad fd number
>  1105 /bin/sh: 1: Syntax error: Bad fd number
>  1106 /bin/sh: 1: Syntax error: Bad fd number
> [...]
>  1110 cd /home/sliedes/scratch/rec/e/e2fsprogs-1.42.1/debian/BUILD-BF && 
> AWK=/usr/bin/awk \
>  1111                 /home/sliedes/scratch/rec/e/e2fsprogs-1.42.1/configure 
> --disable-e2initrd-helper --enable-elf-shlibs --enable-quota 
> --infodir=/usr/share/info --enable-verbose-makecmds --disable-fsck 
> --disable-libblkid --disable-libuuid --disable-uuidd --disable-nls 
> --disable-imager --disable-testio-debug --disable-uuidd --disable-tls 
> --disable-debugfs \
>  1112                 CFLAGS=" -D__NO_STRING_INLINES -Os 
> -fomit-frame-pointer" CPPFLAGS="" LDFLAGS=""
> ------------------------------------------------------------
> 
> Scary syntax errors again. This time CFLAGS contains -Os, but no -g.
> 
> ------------------------------------------------------------
>  1983 /bin/sh: 1: Syntax error: Bad fd number
>  1984 /bin/sh: 1: Syntax error: Bad fd number
> [...]
>  1988 if type diet > /dev/null  2>&1 ; then \
>  1989                 cd 
> /home/sliedes/scratch/rec/e/e2fsprogs-1.42.1/debian/BUILD-STATIC && 
> AWK=/usr/bin/awk \
>  1990                 /home/sliedes/scratch/rec/e/e2fsprogs-1.42.1/configure 
> --disable-nls --disable-imager --disable-uuidd --disable-tls 
> --enable-verbose-makecmds \
>  1991                 --with-diet-libc CFLAGS=" -D__NO_STRING_INLINES"; \
>  1992         else \
>  1993                 cd 
> /home/sliedes/scratch/rec/e/e2fsprogs-1.42.1/debian/BUILD-STATIC && 
> AWK=/usr/bin/awk \
>  1994                         
> /home/sliedes/scratch/rec/e/e2fsprogs-1.42.1/configure --disable-nls 
> --disable-imager --disable-uuidd --disable-tls --enable-verbose-makecmds \
>  1995                         CFLAGS=" -D__NO_STRING_INLINES"; \
>  1996         fi
> ------------------------------------------------------------
> 
> 
> -- System Information:
> Debian Release: wheezy/sid
>  APT prefers unstable
>  APT policy: (500, 'unstable')
> Architecture: amd64 (x86_64)
> 
> Kernel: Linux 3.2.4 (SMP w/8 CPU cores)
> Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
> 
> Versions of packages e2fsprogs depends on:
> ii  e2fslibs    1.42.1-1
> ii  libblkid1   2.20.1-1.2
> ii  libc6       2.13-26
> ii  libcomerr2  1.42.1-1
> ii  libss2      1.42.1-1
> ii  libuuid1    2.20.1-1.2
> ii  util-linux  2.20.1-1.2
> 
> e2fsprogs recommends no packages.
> 
> Versions of packages e2fsprogs suggests:
> ii  e2fsck-static  1.42.1-1
> ii  gpart          <none>
> ii  parted         2.3-8
> 
> -- no debconf information




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