Bug #20853
closed
Enabling LZ4 in 12.1.1 fails
Added by Sander Klein almost 7 years ago.
Updated almost 7 years ago.
Description
I'm testing Luminus 12.1.1 from the Ceph repository on Ubuntu Xenial and it seems like it is not build with LZ4.
When trying to enable LZ4 I get the following error in the OSD:
2017-07-29 16:13:12.451189 7fba0715dc80 -1 load failed dlopen(): "/usr/lib/ceph/compressor/libceph_lz4.so: cannot open shared object file: No such file or directory" or "/usr/lib/ceph/libceph_lz4.so: cannot open shared object file: No such file or directory"
2017-07-29 16:13:12.451201 7fba0715dc80 -1 create cannot load compressor of type lz4
2017-07-29 16:13:12.451204 7fba0715dc80 -1 bluestore(/var/lib/ceph/osd/ceph-2) _set_compression unable to initialize lz4 compressor
Checking the /usr/lib/ceph/compressor directory indeed shows no lz4 compression being available.
After that I tried to build my own packages with lz4 enabled. I installed the liblz4-dev package and used the -DWITH_LZ4=ON flag, but still I do not get the required libceph_lz4.so file.
how do you enable -DWITH_LZ4 ?
Since I'm trying to build .debs I added extraopts += -DWITH_LZ4=ON to debian/rules file.
But I also wonder why it is not build with lz4 by default.
Just to be more complete, I also added liblz4-dev to the build-depends in the control file.
I'm not familiar to debain/control, but -DWITH_LZ4 is used to indicate cmake. I hope others can answer
- Category changed from OSD to build
$ git diff debian/rules
diff --git a/debian/rules b/debian/rules
index 2e4ec9d22a..54f216c35e 100755
--- a/debian/rules
+++ b/debian/rules
@@ -7,6 +7,7 @@ export DEB_HOST_ARCH ?= $(shell dpkg-architecture -qDEB_HOST_ARCH)
extraopts += -DUSE_CRYPTOPP=OFF -DWITH_OCF=ON -DWITH_LTTNG=ON -DWITH_PYTHON3=ON -DWITH_EMBEDDED=OFF
extraopts += -DWITH_CEPHFS_JAVA=ON
+extraopts += -DWITH_LZ4=ON
# assumes that ceph is exmpt from multiarch support, so we override the libdir.
extraopts += -DCMAKE_INSTALL_LIBDIR=/usr/lib
extraopts += -DCMAKE_INSTALL_LIBEXECDIR=/usr/lib
$ dpkg -c ../ceph-common_12.1.1-1_amd64.deb | grep lz4
-rw-r--r-- root/root 18848 2017-07-18 00:55 ./usr/lib/ceph/compressor/libceph_lz4.so.2.0.0
lrwxrwxrwx root/root 0 2017-07-18 00:55 ./usr/lib/ceph/compressor/libceph_lz4.so -> libceph_lz4.so.2
lrwxrwxrwx root/root 0 2017-07-18 00:55 ./usr/lib/ceph/compressor/libceph_lz4.so.2 -> libceph_lz4.so.2.0.0
- Status changed from New to Can't reproduce
closing. please check your building env. and run
fakeroot debian/rules binary
then check the obj-x86_64-linux-gnu/CMakeCache.txt to see if LZ4 related variables are set correctly.
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