Re: rdma-core spec weird behavior on Fedora

[Leon Romanovsky <leon@kernel.org>]

On Mon, Feb 08, 2021 at 03:15:52PM +0200, Alaa Hleihel wrote:
> On 08/02/2021 15:10, Leon Romanovsky wrote:
> > External email: Use caution opening links or attachments
> >
> >
> > On Mon, Feb 08, 2021 at 08:59:00AM -0400, Jason Gunthorpe wrote:
> >> On Sun, Feb 07, 2021 at 10:06:49AM +0200, Leon Romanovsky wrote:
> >>> Hi Honggang,
> >>>
> >>> Your commit b02de521022a ("redhat: Remove base package dependency from all sub-packages")
> >>> removes protection from rdma-core when user performs "dnf autoremove".
> >>>
> >>> Before your patch, systemd was dependent on libibverbs and latter
> >>> required rdma-core. After your patch, the last link is lost and
> >>> rdma-core marked as orphaned package.
> >>>
> >>> Any attempt to install rdma-core as standalone package will have the
> >>> following errors, due to the library dependency of udevadm.
> >>> [leonro@c rdma-core]$ ldd /sbin/udevadm | grep verbs
> >>>     libibverbs.so.1 => not found
> >>
> >> well that makes no sense, since when is udevadm connected to
> >> libibverbs?
> >>
> >> $ ldd `which udevadm`
> >>       linux-vdso.so.1 (0x00007ffcc09ef000)
> >>       libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f394bec3000)
> >>       libkmod.so.2 => /lib/x86_64-linux-gnu/libkmod.so.2 (0x00007f394bea8000)
> >>       libacl.so.1 => /lib/x86_64-linux-gnu/libacl.so.1 (0x00007f394be9d000)
> >>       libblkid.so.1 => /lib/x86_64-linux-gnu/libblkid.so.1 (0x00007f394be46000)
> >>       libselinux.so.1 => /lib/x86_64-linux-gnu/libselinux.so.1 (0x00007f394be1b000)
> >>       libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f394bdf8000)
> >>       /lib64/ld-linux-x86-64.so.2 (0x00007f394c1b6000)
> >>       liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f394bdcd000)
> >>       libcrypto.so.1.1 => /lib/x86_64-linux-gnu/libcrypto.so.1.1 (0x00007f394baf7000)
> >>       libpcre2-8.so.0 => /lib/x86_64-linux-gnu/libpcre2-8.so.0 (0x00007f394ba67000)
> >>       libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f394ba61000)
> >
> > This is from my laptop and it is connected:
> >
> > ➜  kernel git:(m/msix-v6) ldd /sbin/udevadm
> >         linux-vdso.so.1 (0x00007fffc4bf2000)
> >         libsystemd-shared-246.so => /usr/lib/systemd/libsystemd-shared-246.so (0x00007f70f69ef000)
> >         libkmod.so.2 => /lib64/libkmod.so.2 (0x00007f70f69c0000)
> >         libacl.so.1 => /lib64/libacl.so.1 (0x00007f70f69b6000)
> >         libblkid.so.1 => /lib64/libblkid.so.1 (0x00007f70f6981000)
> >         libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f70f6966000)
> >         libc.so.6 => /lib64/libc.so.6 (0x00007f70f679b000)
> >         libcap.so.2 => /lib64/libcap.so.2 (0x00007f70f6792000)
> >         libcrypt.so.2 => /lib64/libcrypt.so.2 (0x00007f70f6758000)
> >         libcryptsetup.so.12 => /lib64/libcryptsetup.so.12 (0x00007f70f66e3000)
> >         libgcrypt.so.20 => /lib64/libgcrypt.so.20 (0x00007f70f65be000)
> >         libidn2.so.0 => /lib64/libidn2.so.0 (0x00007f70f659d000)
> >         libip4tc.so.2 => /lib64/libip4tc.so.2 (0x00007f70f6593000)
> >         liblz4.so.1 => /lib64/liblz4.so.1 (0x00007f70f6573000)
> >         libmount.so.1 => /lib64/libmount.so.1 (0x00007f70f6530000)
> >         libcrypto.so.1.1 => /lib64/libcrypto.so.1.1 (0x00007f70f6243000)
> >         libp11-kit.so.0 => /lib64/libp11-kit.so.0 (0x00007f70f6111000)
> >         libpam.so.0 => /lib64/libpam.so.0 (0x00007f70f60ff000)
> >         librt.so.1 => /lib64/librt.so.1 (0x00007f70f60f4000)
> >         libseccomp.so.2 => /lib64/libseccomp.so.2 (0x00007f70f60d0000)
> >         libselinux.so.1 => /lib64/libselinux.so.1 (0x00007f70f60a3000)
> >         libzstd.so.1 => /lib64/libzstd.so.1 (0x00007f70f5fce000)
> >         liblzma.so.5 => /lib64/liblzma.so.5 (0x00007f70f5fa2000)
> >         libdl.so.2 => /lib64/libdl.so.2 (0x00007f70f5f9b000)
> >         libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f70f5f79000)
> >         /lib64/ld-linux-x86-64.so.2 (0x00007f70f6d29000)
> >         libz.so.1 => /lib64/libz.so.1 (0x00007f70f5f5d000)
> >         libattr.so.1 => /lib64/libattr.so.1 (0x00007f70f5f55000)
> >         libuuid.so.1 => /lib64/libuuid.so.1 (0x00007f70f5f4c000)
> >         libdevmapper.so.1.02 => /lib64/libdevmapper.so.1.02 (0x00007f70f5eef000)
> >         libssl.so.1.1 => /lib64/libssl.so.1.1 (0x00007f70f5e53000)
> >         libargon2.so.1 => /lib64/libargon2.so.1 (0x00007f70f5e4a000)
> >         libjson-c.so.5 => /lib64/libjson-c.so.5 (0x00007f70f5e35000)
> >         libgpg-error.so.0 => /lib64/libgpg-error.so.0 (0x00007f70f5e10000)
> >         libunistring.so.2 => /lib64/libunistring.so.2 (0x00007f70f5c8d000)
> >         libpcap.so.1 => /lib64/libpcap.so.1 (0x00007f70f5c3e000)
>
> Check if libpcap was built with rdma support.
> # nm /lib64/libpcap.so.1 | grep ibv
>
> That's probably what pulled the libibverbs dependency.

➜  kernel git:(m/msix-v6) nm /lib64/libpcap.so.1 | grep ibv
nm: /lib64/libpcap.so.1: no symbols

Thanks