1) Patch in support for special file and block device types( Issue 355 )
Patched codes, and s3fs can make special files on S3.
git-svn-id: http://s3fs.googlecode.com/svn/trunk@460 df820570-a93a-0410-bd06-b72b767a4274
* Summay
This revision includes big change about temporary file and local cache file.
By this big change, s3fs works with good performance when s3fs opens/
closes/syncs/reads object.
I made a big change about the handling about temporary file and local cache
file to do this implementation.
* Detail
1) About temporary file(local file)
s3fs uses a temporary file on local file system when s3fs does download/
upload/open/seek object on S3.
After this revision, s3fs calls ftruncate() function when s3fs makes the
temporary file.
In this way s3fs can set a file size of precisely length without downloading.
(Notice - ftruncate function is for XSI-compliant systems, so that possibly
you have a problem on non-XSI-compliant systems.)
By this change, s3fs can download a part of a object by requesting with
"Range" http header. It seems like downloading by each block unit.
The default block(part) size is 50MB, it is caused the result which is default
parallel requests count(5) by default multipart upload size(10MB).
If you need to change this block size, you can change by new option
"fd_page_size". This option can take from 1MB(1024 * 1024) to any bytes.
So that, you have to take care about that fdcache.cpp(and fdcache.h) were
changed a lot.
2) About local cache
Local cache files which are in directory specified by "use_cache" option do
not have always all of object data.
This cause is that s3fs uses ftruncate function and reads(writes) each block
unit of a temporary file.
s3fs manages each block unit's status which are "downloaded area" or "not".
For this status, s3fs makes new temporary file in cache directory which is
specified by "use_cache" option. This status files is in a directory which is
named "<use_cache sirectory>/.<bucket_name>/".
When s3fs opens this status file, s3fs locks this file for exclusive control by
calling flock function. You need to take care about this, the status files can
not be laid on network drive(like NFS).
This revision changes about file open mode, s3fs always opens a local cache
file and each status file with writable mode.
Last, this revision adds new option "del_cache", this option means that s3fs
deletes all local cache file when s3fs starts and exits.
3) Uploading
When s3fs writes data to file descriptor through FUSE request, old s3fs
revision downloads all of the object. But new revision does not download all,
it downloads only small percial area(some block units) including writing data
area.
And when s3fs closes or flushes the file descriptor, s3fs downloads other area
which is not downloaded from server. After that, s3fs uploads all of data.
Already r456 revision has parallel upload function, then this revision with
r456 and r457 are very big change for performance.
4) Downloading
By changing a temporary file and a local cache file, when s3fs downloads a
object, it downloads only the required range(some block units).
And s3fs downloads units by parallel GET request, it is same as a case of
uploading. (Maximum parallel request count and each download size are
specified same parameters for uploading.)
In the new revision, when s3fs opens file, s3fs returns file descriptor soon.
Because s3fs only opens(makes) the file descriptor with no downloading
data. And when s3fs reads a data, s3fs downloads only some block unit
including specified area.
This result is good for performance.
5) Changes option name
The option "parallel_upload" which added at r456 is changed to new option
name as "parallel_count". This reason is this option value is not only used by
uploading object, but a uploading object also uses this option. (For a while,
you can use old option name "parallel_upload" for compatibility.)
git-svn-id: http://s3fs.googlecode.com/svn/trunk@458 df820570-a93a-0410-bd06-b72b767a4274
1) For uploading performance(part 2)
Changed a codes about uploading large object(multipart uploading).
This revision does not make temporary file when s3fs uploads large object by multipart uploading.
Before this revision, s3fs made temporary file(/tmp/s3fs.XXXXX) for multipart, but it was not good for performance.
So that, new codes do not use those files, and s3fs reads directly large object from s3fs's cache file.
2) Some value to symbol
Changed some value to symbol(define).
git-svn-id: http://s3fs.googlecode.com/svn/trunk@457 df820570-a93a-0410-bd06-b72b767a4274
1) For uploading performance(part 1)
Changed a code for large object uploading.
New codes makes s3fs send parallel requests when s3fs uploads large
object(20MB) by multipart post.
And added new "parallel_upload" option, which limits parallel request
count which s3fs requests at once.
This option's default value is "5", and you can change this value. But it
is necessary to set this value depending on a CPU and a network band.
s3fs became to work good performance by this option, please try to set
your value for this option.
2) Changes debugging messages
Changed debugging message in s3fs.cpp.
git-svn-id: http://s3fs.googlecode.com/svn/trunk@456 df820570-a93a-0410-bd06-b72b767a4274
1) Option syntax verbosity in doc ( Issue 352 )
Before this revision(version), "use_rrs" option needs to set a parameter like "use_sse" option.
But this option does not need a parameter, specified "use_rrs" option means enabled RRS.
(because RRS is desabled by default.)
After this revision, "use_rrs" option can be specified without a parameter, and "use_sse" too.
Changed codes, man page and help page.
Please notice, for old version "use_rrs"(and "use_sse") can be specified with a parameter("1" or "0") yet.
2) Fixes a bug about analizing "use_sse" option.
Fixed a bug in r451, "use_sse" option is not worked because s3fs mistook to call function for "use_rrs".
3) Fixes a memory leak.
Fixed a memory leak in r451.
Fixed that the curl_slist_sort_insert() function forgot to free memory.
git-svn-id: http://s3fs.googlecode.com/svn/trunk@452 df820570-a93a-0410-bd06-b72b767a4274
1) Changes codes for performance and request's costs
s3fs gets object's attributes by using HEAD request.
Directory objects is following 4 type:
a) name type is "dir", with meta information
b) name type is "dir", without meta information(but has files in itself)
c) name type is "dir/", with(out) meta information
d) name type is "dir_$folder$", with(out) meta information
The codes is changed to order checking directory object.
So that, s3fs decreases requests for checking objects.
Before version has a bug, that is s3fs can not be recognizable type-b)
definitely when s3fs check the object directly.(but s3fs can, when s3fs
check the object by listing)
This change fixes this bug.
2) Adds "multireq_max" option
Added "multireq_max" option is maximum number of parallel request
for listing objects.
This changes is possible to solve CURLE_COULDNT_CONNECT.
If this option can not solve it, this option will be useful for tuning
performance by each.
git-svn-id: http://s3fs.googlecode.com/svn/trunk@449 df820570-a93a-0410-bd06-b72b767a4274
1) Fixed a bug(forgot removing temporary files)
When s3fs gets a error from fwrite in multipart uploading function,
s3fs does not remove a temporary file.
2) Fixed a bug(wrong prototype of function)
The prototype of function for CURLSHOPT_UNLOCKFUNC
is wrong.
3) Changed codes
- In my_curl_easy_perform function, the codes for debugging messages
is changed, because it is for not working codes when "-d" option is
not specified.
- Changes struct head_data's member variables, and some codes for this
changes.
- Moving calling function to main for curl_global_init and curl_share_init
functions, because these function must call in main thread.
4) Fixed a bug(use uninitialized memory)
In get_lastmodified function, this function does not initialize value
(struct tm).
5) Fixed a bug(access freed variable)
In readdir_multi_head function, access a variable which is already freed.
git-svn-id: http://s3fs.googlecode.com/svn/trunk@442 df820570-a93a-0410-bd06-b72b767a4274
1) Patch adding support for SSE( Issue 226 )
Supports SSE(Server-Side Encryption) and adds "use_sse" option.
* Specifications
When "use_sse" option is specified as "1", s3fs adds "x-amz-server-side-encryption"
header as "AES256".
But it only does when objects upload(writing object).
When you do chmod/chown/chgrp/touch/mv commands, s3fs does not
add this header and inherit SSE mode from oroginal object.
* Notice
"use_sse" option can not specify with "use_rrs" because we get signature
error from S3.
git-svn-id: http://s3fs.googlecode.com/svn/trunk@438 df820570-a93a-0410-bd06-b72b767a4274
1) s3fs should cache DNS lookups?(Issue 304)
Changes that s3fs always uses own dns cache, and adds "nodnscache" option.
If "nodnscache" is specified, s3fs does not use dns cache as before.
s3fs keeps DNS cache for 60 senconds by libcurl's default.
git-svn-id: http://s3fs.googlecode.com/svn/trunk@429 df820570-a93a-0410-bd06-b72b767a4274
1) Fixes a bug which object owner/group is set wrong id.
When do chown(chgrp) command without group(owner), s3fs set wrong id(-1)
for group(owner) id.
Fixes this bug.
2) The permission of mount point when allow_other option is specified.
When allow_other option is specified, s3fs forces the mount point directory
permission to set executable permission(mode | 0111).
3) Fixes a bug about permission
For example, when the directory permission is 0557, other user(who is not owner
and same group) gets a permission error when making file or directory in that dir.
Fixes this bug.
4) Compile error: blkcnt_t(Issue 340)
Fixes a bug: Compile error: blkcnt_t(Issue 340)
git-svn-id: http://s3fs.googlecode.com/svn/trunk@428 df820570-a93a-0410-bd06-b72b767a4274
1) Adds enable_content_md5 option
When s3fs uploads large object(over 20MB), s3fs checks always ETag(MD5) in each multipart's response.
But for small objects, s3fs does not check MD5.
This new option enables for checking MD5 of uploading object.
If "enable_content_md5" option is specified, s3fs puts the object with "Content-MD5" header.
The checking MD5 value is not default, because it increases some of user's cpu usage.
(The default value may be replaced in the future.)
git-svn-id: http://s3fs.googlecode.com/svn/trunk@423 df820570-a93a-0410-bd06-b72b767a4274
1) s3sync'ed files not supported(Issue 31)
Supports HTTP headers which made by s3sync.
Supported new HTTP headers are x-amz-meta-owner,
x-amz-meta-permissions and x-amz-meta-group.
s3fs read and understand these headers, but s3fs
gives priority to s3fs's headers over these headers.
2) Cleanups codes
Cleanups some codes about issue 31.
git-svn-id: http://s3fs.googlecode.com/svn/trunk@422 df820570-a93a-0410-bd06-b72b767a4274
1) Man file has wrong permissions for passwd file(Issue 291)
Fixes man page for wrong permissions of passwd file.
2) Fixes a bug and Strictly checks passwd file permission.
* Fixes a bug about checking passwd file permission.
A bug is that s3fs continues to run after s3fs finds invalid passwd
file permission.
* Checks passwd file strictly.
Before this revision, s3fs allows executable permission for a
passwd file and allows group writable permission for a passwd
file(which is not "/etc/passwd-s3fs").
New s3fs checks permission strictly, that is /etc/passwd-s3fs is
allowed owner readable/writable and group readable, and the
passwd file(which is not "/etc/passwd-s3fs") is allowed only owner
readable/writable.
3) Adds disable_noobj_cache option for no-existing object.
s3fs v1.68 always has to check whether file(or sub directory) exists
under object(path) when s3fs does some command, since s3fs has
recognized a directory which does not exist and has files or sub
directories under itself.
It increases ListBucket request and makes performance bad.
For performance if the disable_noobj_cache option is specified, s3fs
memorizes in stat cache that the object(file or directory) does not exist.
git-svn-id: http://s3fs.googlecode.com/svn/trunk@420 df820570-a93a-0410-bd06-b72b767a4274
1) Feature Request: Compatability with other S3FS clients(Issue: 27)
Rechanges source code.
2) For other S3 clients
Supports the directory which is no objects.
If there is a object which has "/" charactor(ex. "<bucket>/dir/file"), the directory("dir") object is no object.
Exsample, you can upload the object which name is "s3://bucket/dir/file" by the s3cmd.
Then the "dir" is not object in bucket("dir").
This s3fs codes understands this case.
git-svn-id: http://s3fs.googlecode.com/svn/trunk@414 df820570-a93a-0410-bd06-b72b767a4274
1) Feature Request: Compatability with other S3FS clients(Issue: 27)
Supported the directory object which made by s3fox. Its name has "_$folder$" suffixes.
On s3fs, that directory object is listed normal directory name without "_$folder$".
You need careful when you change object attributes(rename, chmod, chown, touch), because the s3fs remakes the directory object after that object(which has "_$folder$" suffix)
After changing the object attributes, the object name does not have "_$folder$" suffix.
It means the object is remade by s3fs.
2) Other
Fixes bugs which are found when this issue is fixed.
git-svn-id: http://s3fs.googlecode.com/svn/trunk@413 df820570-a93a-0410-bd06-b72b767a4274
1) Changes for fixing a bug(Issue 328)
The return value in get_username() function is wrong value(NULL) when there is not user id in passwd file.
git-svn-id: http://s3fs.googlecode.com/svn/trunk@404 df820570-a93a-0410-bd06-b72b767a4274
==========================
List of Changes
==========================
1) Fixes bugs
Fixes Issue 321: "no write permission for non-root user".
(http://code.google.com/p/s3fs/issues/detail?id=321)
Fixes a bug which s3fs does not set uid/gid headers when making symlink.
2) Cleanup code.
Adds a common function which converts the Last-Modified header to utime.
Deletes the useless cord and arranged it.
3) xmlns
Changes that s3fs can decide using the xmlns url automatically.
Then the noxmlns option is not needed anymore, but it is left.
4) Changes cache for performance
Changes stat cache, it accumulates stat information and some headers.
By adding some headers into cache, s3fs does not need to call curl_get_headers function.
After changing, one cache entry increases in about 500 bytes from about 144 byte.
Adds one condition to get out of the cache, that condition is by looking object's ETag.
It works good for noticing changes about obojects.
git-svn-id: http://s3fs.googlecode.com/svn/trunk@400 df820570-a93a-0410-bd06-b72b767a4274
No changes for logic, only changes layout of functions and valiables between a file to a file.
Adds s3fs_util.cpp/s3fs_util.h/common.h
git-svn-id: http://s3fs.googlecode.com/svn/trunk@396 df820570-a93a-0410-bd06-b72b767a4274
