Re: EINTR error in SunOS

Doug McNaught wrote:

> c) treat EINTR as an I/O error (I don't know how easy this would be)

So then at this point - it is detected, so problem solved?

If a LOCAL hard drive fails to reply, you hang. Same with hard,intr
NFS file system.


    bytesRead = read(fd, buffer, requestedBytes);

    if (bytesRead < 0) {
        switch (errno) {

        case EAGAIN:
#ifdef USING_RECORD_LOCKING_OR_NON_BLOCKING_IO
            ...do the above read() again...
#else
        /*FALLTHRU*/
#endif
        default:
            ... log error and errno...
            break;
        }

    } else if (bytesRead == 0) {
        ...AT EOF...

    } else if (bytesRead < requestdBytes) {
        ...if you care, loop on read until
        remaining bytes are fetched
        or at EOF...
    }

    return(bytesRead);



> d) say "if you mount 'soft' and lose data, tough luck for you"

I seem to recall from my days at Sun, you should NOT use soft
mount for NFS writes at all. Soft mounts are for non-critical
disk resources. (Solaris admin  manual?)

--

Doug Royer                     | http://INET-Consulting.com
-------------------------------|-----------------------------

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