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Writing to some file systems can be interrupted.

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At least such behavior was observed with CephFS, see:
http://mailman.nginx.org/pipermail/nginx/2015-July/048188.html.
This commit is contained in:
Valentin Bartenev 2015-09-02 19:26:40 +03:00
parent 5e0b936a07
commit 7dd3f9ee22
1 changed files with 12 additions and 1 deletions
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13
src/os/unix/ngx_files.c
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@ -264,6 +264,7 @@ ngx_write_chain_to_file(ngx_file_t *file, ngx_chain_t *cl, off_t offset,
u_char *prev;
size_t size;
ssize_t total, n;
ngx_err_t err;
ngx_array_t vec;
struct iovec *iov, iovs[NGX_IOVS];
@ -335,10 +336,20 @@ ngx_write_chain_to_file(ngx_file_t *file, ngx_chain_t *cl, off_t offset,
file->sys_offset = offset;
}
eintr:
n = writev(file->fd, vec.elts, vec.nelts);
if (n == -1) {
ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno,
err = ngx_errno;
if (err == NGX_EINTR) {
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
"writev() was interrupted");
goto eintr;
}
ngx_log_error(NGX_LOG_CRIT, file->log, err,
"writev() \"%s\" failed", file->name.data);
return NGX_ERROR;
}