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s3fs-fuse
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Corresponded to upload in case of calling release without flush (#2150)

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Takeshi Nakatani 2023-04-23 22:59:04 +09:00 committed by GitHub
parent 9b75abfbe6
commit 6d4bb59865
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1 changed files with 31 additions and 18 deletions
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49
src/s3fs.cpp
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@ -2911,21 +2911,6 @@ static int s3fs_release(const char* _path, struct fuse_file_info* fi)
WTF8_ENCODE(path)
S3FS_PRN_INFO("[path=%s][pseudo_fd=%llu]", path, (unsigned long long)(fi->fh));
// [NOTE]
// All opened file's stats is cached with no truncate flag.
// Thus we unset it here.
StatCache::getStatCacheData()->ChangeNoTruncateFlag(std::string(path), false);
// [NOTICE]
// At first, we remove stats cache.
// Because fuse does not wait for response from "release" function. :-(
// And fuse runs next command before this function returns.
// Thus we call deleting stats function ASAP.
//
if((fi->flags & O_RDWR) || (fi->flags & O_WRONLY)){
StatCache::getStatCacheData()->DelStat(path);
}
{ // scope for AutoFdEntity
AutoFdEntity autoent;
@ -2939,11 +2924,39 @@ static int s3fs_release(const char* _path, struct fuse_file_info* fi)
return -EIO;
}
// [NOTE]
// There are cases when s3fs_flush is not called and s3fs_release is called.
// (There have been reported cases where it is not called when exported as NFS.)
// Therefore, Flush() is called here to try to upload the data.
// Flush() will only perform an upload if the file has been updated.
//
int result;
if(ent->IsModified()){
if(0 != (result = ent->Flush(static_cast<int>(fi->fh), AutoLock::NONE, false))){
S3FS_PRN_ERR("failed to upload file contentsfor pseudo_fd(%llu) / path(%s) by result(%d)", (unsigned long long)(fi->fh), path, result);
return result;
}
}
// [NOTE]
// All opened file's stats is cached with no truncate flag.
// Thus we unset it here.
StatCache::getStatCacheData()->ChangeNoTruncateFlag(std::string(path), false);
// [NOTICE]
// At first, we remove stats cache.
// Because fuse does not wait for response from "release" function. :-(
// And fuse runs next command before this function returns.
// Thus we call deleting stats function ASAP.
//
if((fi->flags & O_RDWR) || (fi->flags & O_WRONLY)){
StatCache::getStatCacheData()->DelStat(path);
}
bool is_new_file = ent->IsDirtyNewFile();
// TODO: correct locks held?
int result = ent->UploadPending(static_cast<int>(fi->fh), AutoLock::NONE);
if(0 != result){
if(0 != (result = ent->UploadPending(static_cast<int>(fi->fh), AutoLock::NONE))){
S3FS_PRN_ERR("could not upload pending data(meta, etc) for pseudo_fd(%llu) / path(%s)", (unsigned long long)(fi->fh), path);
return result;
}
@ -2960,7 +2973,7 @@ static int s3fs_release(const char* _path, struct fuse_file_info* fi)
// check - for debug
if(S3fsLog::IsS3fsLogDbg()){
if(FdManager::HasOpenEntityFd(path)){
S3FS_PRN_WARN("file(%s) is still opened(another pseudo fd is opend).", path);
S3FS_PRN_DBG("file(%s) is still opened(another pseudo fd is opend).", path);
}
}
S3FS_MALLOCTRIM(0);