cvs commit: src/sys/geom/mirror g_mirror.c g_mirror.h

Scott Long scottl at
Fri Nov 5 13:12:49 GMT 2004

Pawel Jakub Dawidek wrote:
> pjd         2004-11-05 09:05:15 UTC
>   FreeBSD src repository
>   Modified files:
>     sys/geom/mirror      g_mirror.c g_mirror.h 
>   Log:
>   MFp4:
>   - Fix for good (I hope) force-stopping mirrors and some filure cases
>     (e.g. the last good component dies when synchronization is in progress).
>     Don't use ->nstart/->nend consumer's fields, as this could be racy,
>     because those fields are used in g_down/g_up, use ->index consumer's
>     field instead for tracking number of not finished requests.
>     Reported by:  marcel
>   - After 5 seconds of idle time (this should be configurable) mark all
>     dirty providers as clean, so when mirror is not used in 5 seconds
>     and there will be power failure, no synchronization on boot is needed.
>     Idea from:    sorry, I can't find who suggested this

Do you check that all outstanding writes are actually completed in this
timeout period, or just that you haven't recieved any new writes in this


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