SUMMARY: must reboot backup server due to hung rmt process

From: Andreas Luik (
Date: Tue Apr 07 1998 - 09:20:32 CDT

[I asked what to do, if, after a nighly backup, a rmt process persists
on the backup server. This process is not killable, even with kill -9,
so the backup server must be rebooted to release the tape again.
System environment is: SPARCserver 20, Solaris 2.4, HP SureStore
12000e DAT autoloader.]

I received answers from:

Chris Marble <> recommended to update to
    Solaris 2.5.1 or later, because they had this problem if media
    errors where found on the tape under Solaris 2.3 and 2.4, but
    since 2.5.1 it works. Also suggested to try to modunload the tape
    driver to regain control of the tape drive. -- [Did not yet tried
    modunload, but we will consider upgrading to Solaris 2.6.]

bismark@alta.Jpl.Nasa.Gov (Bismark Espinoza) suggested to check scsi
    kernel entries in -- [I don't think that HP has its
    own Solaris driver for this device; especially because the
    documentation in <URL:> does
    not mention a special driver, but explains how to configure the
    Sun driver. But we will recheck our driver configuration (switch
    settings) and driver configuration as suggested in this web page.] (Craig L. Gruneberg) sent a "mee too". (Marc S. Gibian) thinks that there is no
    way to prevent the problem, except to use a high level backup
    solution like Legato or EMC's. -- [We will consider this,
    especially if the problem persists with Solaris 2.6.]

Thanks for your answers,

Andreas Luik         E-Mail:
(  WWW:
                     PGP:    E2 6A 41 70 67 1E 0B 68  94 0D 9E 83 95 16 AF 59

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