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s3fs
s3fs allows Linux and Mac OS X to mount an S3 bucket via FUSE.
s3fs preserves the native object format for files, allowing use of other tools like s3cmd.
Features
- large subset of POSIX including reading/writing files, directories, symlinks, mode, uid/gid, and extended attributes
- compatible with Amazon S3, Google Cloud Storage, and other S3-based object stores
- large files via multi-part upload
- renames via server-side copy
- optional server-side encryption
- data integrity via MD5 hashes
- in-memory metadata caching
- local disk data caching
- user-specified regions, including Amazon GovCloud
- authenticate via v2 or v4 signatures
Installation
Ensure you have all the dependencies:
On Ubuntu 14.04:
sudo apt-get install automake autotools-dev g++ git libcurl4-gnutls-dev libfuse-dev libssl-dev libxml2-dev make pkg-config
On CentOS 7:
sudo yum install automake fuse fuse-devel gcc-c++ git libcurl-devel libxml2-devel make openssl-devel
Compile from master via the following commands:
git clone https://github.com/s3fs-fuse/s3fs-fuse.git
cd s3fs-fuse
./autogen.sh
./configure
make
sudo make install
Examples
Enter your S3 identity and credential in a file /path/to/passwd:
echo MYIDENTITY:MYCREDENTIAL > /path/to/passwd
Make sure the file has proper permissions (if you get 'permissions' error when mounting) /path/to/passwd:
chmod 600 /path/to/passwd
Run s3fs with an existing bucket mybucket and directory /path/to/mountpoint:
s3fs mybucket /path/to/mountpoint -o passwd_file=/path/to/passwd
If you encounter any errors, enable debug output:
s3fs mybucket /path/to/mountpoint -o passwd_file=/path/to/passwd -d -d -f -o f2 -o curldbg
You can also mount on boot by entering the following line to /etc/fstab:
s3fs#mybucket /path/to/mountpoint fuse _netdev,allow_other 0 0
or
mybucket /path/to/mountpoint fuse.s3fs _netdev,allow_other 0 0
Note: You may also want to create the global credential file first
echo MYIDENTITY:MYCREDENTIAL > /etc/passwd-s3fs
chmod 600 /etc/passwd-s3fs
Note2: You may also need to make sure netfs service is start on boot
Limitations
Generally S3 cannot offer the same performance or semantics as a local file system. More specifically:
- random writes or appends to files require rewriting the entire file
- metadata operations such as listing directories have poor performance due to network latency
- eventual consistency can temporarily yield stale data(Amazon S3 Data Consistency Model)
- no atomic renames of files or directories
- no coordination between multiple clients mounting the same bucket
- no hard links
References
- goofys - similar to s3fs but has better performance and less POSIX compatibility
- s3backer - mount an S3 bucket as a single file
- s3fs-python - an older and less complete implementation written in Python
- S3Proxy - combine with s3fs to mount EMC Atmos, Microsoft Azure, and OpenStack Swift buckets
- s3ql - similar to s3fs but uses its own object format
- YAS3FS - similar to s3fs but uses SNS to allow multiple clients to mount a bucket
Frequently Asked Questions
License
Copyright (C) 2010 Randy Rizun rrizun@gmail.com
Licensed under the GNU GPL version 2