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    SubjectRe: fsync on large files
    On Sat, 13 Feb 1999, Theodore Y. Ts'o wrote:
    > Hmm. That's an interesting problem. This is the first time someone's
    > called it to my attention that syslog was calling fsync() all the time,
    > and obviously this causes a problem if there's a lot of syslogging going
    > on and the log files are large.

    You can disable syslogd's syncing by prepending a '-' to the filename:

    # Log anything (except mail) of level info or higher.
    # Don't log private authentication messages!
    *.info;mail.none;authpriv.none -/var/log/messages
    # The authpriv file has restricted access.
    authpriv.* -/var/log/secure
    # Log all the mail messages in one place.
    mail.* -/var/log/maillog

    I have *destroyed* seagate scsi drives by syslog's fsync'ing too much.
    (A syslog server handling 50 syslog lines/sec on average)

    After 2 destroyed drives in 2 months, one learns rather quickly to turn
    off fsync action.

    -Dan


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