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Update release-notes.md

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Adrian Plata 2019-07-24 14:44:40 -07:00 committed by GitHub
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@ -208,7 +208,7 @@ In order to optimize user experience and security, support for Internet Explorer
{{[fs_types]... {{[fs_types]...
ext4 = {features = has_journal,extent,huge_file,flex_bg,metadata_csum,64bit,dir_nlink,extra_isizeinode_size = 256}}} ext4 = {features = has_journal,extent,huge_file,flex_bg,metadata_csum,64bit,dir_nlink,extra_isizeinode_size = 256}}}
``` ```
"metadata_csum" for ext4 is great. However, SLES12 and SLES15 call this an "experimental feature" and doesnt allow mounting of such blocks. The kubelet's mke2fs util looks up /etc/mke2fs.conf and formats the block volume with the checksum feature. Then the kubelet tries to mount the volume. But the kernel refuses to mount such a volume and errors with exit 32. "metadata_csum" for ext4 is great. However, SLES12 and SLES15 call this an "experimental feature" and doesn't allow mounting of such blocks. The kubelet's mke2fs util looks up /etc/mke2fs.conf and formats the block volume with the checksum feature. Then the kubelet tries to mount the volume. But the kernel refuses to mount such a volume and errors with exit 32.
Resolution: Resolution:
On SLES12 and SLES15 hosts, use `sed` to remove the `metadata_csum` feature from the ucp-kubelet container:`sed -i 's/metadata_csum,//g' /etc/mke2fs.conf` On SLES12 and SLES15 hosts, use `sed` to remove the `metadata_csum` feature from the ucp-kubelet container:`sed -i 's/metadata_csum,//g' /etc/mke2fs.conf`