METASYNC(1M)

NAME

metasync − handle metadevice resync during reboot

SYNOPSIS

/usr/opt/SUNWmd/sbin/metasync [−s setname ] [ buffer_size ] metadevice
/usr/opt/SUNWmd/sbin/metasync [−s setname ] −h
/usr/opt/SUNWmd/sbin/metasync [−s setname ] −r [ buffer_size ]

AVAILABILITY

This program is available with the Solstice DiskSuite software package (SUNWmd).

DESCRIPTION

metasync starts a mirror resync operation on the specified metamirror. All submirrors that need to be resynced are resynced.

buffer_size gives the size (number of 512-byte disk blocks) of the internal copy buffer for the mirror resync. The size defaults to 63 512-byte disk blocks (31.5 Kbytes). It can be no more than 126 blocks.

Applications are free to access a metamirror at the same time that it is being resynced by metasync. Also, metasync performs the copy operations from inside the kernel, which makes the utility more efficient.

With the −r option, metasync will resync all possible submirrors.

OPTIONS

−h Displays a help message.

−r Specifies for metasync to handle special resync requirements during a system reboot. metasync −r should only be invoked from /etc/init.d/SUNWmd.sync. metasync only resyncs those metamirrors that need to be resynced. metasync schedules all the mirror resyncs according to their pass numbers.

−s setname
Specifies the name of the diskset on which metasync will work. Using the −s option will cause the command to perform its administrative function within the specified diskset. Without this option, the command will perform its function on your local metadevices.

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