CRDs in public cloud and on- premises environments • Use the Curve operator to install, upgrade, backup, and expand CurveBS clusters • Use Curve Discover to discover resource changes and to collect CRDs in public cloud and on- premises environments • Use the Curve operator to install, upgrade, backup, and expand CurveFS clusters • Use Curve Discover to discover resource changes and to collect

not available). Filesystem may store an arbitrary file handle (pointer, index, etc) in fi->fh, and use this in other all other file operations (read, write, flush, release, fsync). Filesystem may also opened the file with uint64_t gen; int flags; bool pos_locked; // pos is currently in use std::list pos_waiters; // waiters for pos UserPerm actor_perms; // write caching had been disabled. */ unsigned int writepage : 1; /** Can be filled in by open, to use direct I/O on this file. */ unsigned int direct_io : 1; /** Can be filled in by open. It signals

256KB chunks when the chunk size is set to 16MB. There will be lots of pressure on KV storage, so we use two-level mapping and introduced segment. 2. Segment is also the granularity of space allocation users write data, they only need to select an appropriate CopySet and create a new chunk. Why use a CopySet to manage data? 1. Reduce metadata. If the replication group membership is saved for client provides services by libCurve. At first, external processes such as QEMU, Cinder, and NBD use it to access storage services provided by Curve. The client provids posix-like interface, such

NetEase Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * NetEase Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * NetEase Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * *

it work as user you need user_allow_other in /etc/fuse.conf as # well. (This option allows users to use the allow_other option.) You need # allow_other if you want users other than the owner to access a second resolution * should set this to 1000000000. */ unsigned time_gran; /** * For future use.© XXX Page 14 of 33 */ unsigned reserved[22]; }; 未实现任何权限检查的文件系统通常 应在内部添加此选项，可与参数‘allow_other’一起达到共享文件访问控制。© links -P, --physical physical walk, do not follow symbolic links -t, --tabular use tabular output format -n, --numeric print numeric user/group identifiers© XXX Page 22 of

performance Cloud native Distributed storage system https://www.opencurve.io/Agenda • What is Curve • Use Cases • CurveBS • Key Features • Comparing to Ceph • CurveFS • Comparing to Ceph • Current server fails • Precreated chunk file for volume space mapping • high performance framework • Use bthread (M bthread map N pthread) for scalability and performance on Multi-thread CPU • Lock free

…… // Partitions and ranges should be modified together. So do not // use partitions and ranges directly. Use the helper functions instead. // Partition map indexed by ID partitions

opencurvedocker/curve-base:build-debian11 cd /curve/ # 使用 gcc 编译 bazel build –config=gcc7-later … # use '-faligned-new' to enable C++17 over-aligned new support # 使用 clang 编译 CC=clang CXX=clang++ bazel