nginx/nginx · error

NGX_LOG_CRIT

NGX_LOG_CRIT

Error message

aio read \"%s\" failed

What it means

Error "aio read \"%s\" failed" thrown in nginx/nginx.

Source

Thrown at src/os/unix/ngx_linux_aio_read.c:90

        return NGX_AGAIN;
    }

    ngx_log_debug4(NGX_LOG_DEBUG_CORE, file->log, 0,
                   "aio complete:%d @%O:%uz %V",
                   ev->complete, offset, size, &file->name);

    if (ev->complete) {
        ev->active = 0;
        ev->complete = 0;

        if (aio->res >= 0) {
            ngx_set_errno(0);
            return aio->res;
        }

        ngx_set_errno(-aio->res);

        ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno,
                      "aio read \"%s\" failed", file->name.data);

        return NGX_ERROR;
    }

    ngx_memzero(&aio->aiocb, sizeof(struct iocb));

    aio->aiocb.aio_data = (uint64_t) (uintptr_t) ev;
    aio->aiocb.aio_lio_opcode = IOCB_CMD_PREAD;
    aio->aiocb.aio_fildes = file->fd;
    aio->aiocb.aio_buf = (uint64_t) (uintptr_t) buf;
    aio->aiocb.aio_nbytes = size;
    aio->aiocb.aio_offset = offset;
    aio->aiocb.aio_flags = IOCB_FLAG_RESFD;
    aio->aiocb.aio_resfd = ngx_eventfd;

    ev->handler = ngx_file_aio_event_handler;

View on GitHub (pinned to 3f6f7824d4)

When it happens

Trigger: Thrown at src/os/unix/ngx_linux_aio_read.c:90 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of nginx/nginx@3f6f7824d4 (2026-08-22). Data as JSON: /api/errors/e3985bb2a77a6244. Report an issue: GitHub.