| Skip Navigation Links | |
| Exit Print View | |
 | man pages section 1M: System Administration Commands Oracle Solaris 11 Information Library |
| Skip Navigation Links | |
| Exit Print View | |
| man pages section 1M: System Administration Commands Oracle Solaris 11 Information Library |
- handle metadevice resync during reboot
/usr/sbin/metasync-h
/usr/sbin/metasync [-ssetname] [buffer_size]metadevice
/usr/sbin/metasync [-ssetname]-r [buffer_size]
/usr/sbin/metasync-pmetadevice
/usr/sbin/metasync-cmetadevice
Themetasync command starts a resync operation on the specifiedmetadevice. Allcomponents that need to be resynced are resynced. If the system crashes duringa RAID5 initialization, or during a RAID5 resync, either an initialization orresync restarts when the system reboots.
Applications are free to access a metadevice at the same time thatit is being resynced bymetasync. Also,metasync performs the copy operationsfrom inside the kernel, which makes the utility more efficient.
Use the-r option in boot scripts to resync all possible submirrors.
The following options are supported:
Cancels the resync that is in progress on the specified metadevice. The resync will be stopped at its current point and can be resumed by running the “metasync metadevice” command. This option only applies to RAID1 volumes.
Displays usage message.
Regenerates parity information for RAID5 metadevices.
Specifies the name of the diskset on whichmetasync 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 local metadevices.
Specifies that themetasync command handle special resync requirements during a system reboot.metasync-r should only be invoked from thesvc:/system/mdmonitor service. Themetasync command only resyncs those metadevices that need to be resynced.metasync schedules all the mirror resyncs according to their pass numbers.
To override the default buffer_size value used by thesvc:/system/mdmonitor service, you can edit/etc/system to specify:
set md_mirror:md_resync_bufsz = 2048
so that resyncs occur as quickly as possible.
Specifies the size (number of 512-byte disk blocks) of the internal copy buffer for the mirror resync. The size defaults to 1024 512-byte disk blocks. It can be no more than 2048 blocks. For best performance (quickest completion of the resync), 2048 blocks is the recommended size.
The following exit values are returned:
Successful completion.
An error occurred.
Seeattributes(5) for descriptions of the following attributes:
|
mdmonitord(1M),metaclear(1M),metadb(1M),metadetach(1M),metahs(1M),metainit(1M),metaoffline(1M),metaonline(1M),metaparam(1M),metarecover(1M),metarename(1M),metareplace(1M),metaset(1M),metassist(1M),metastat(1M),metattach(1M),md.tab(4),md.cf(4),mddb.cf(4),md.tab(4),attributes(5),md(7D)
Solaris Volume Manager Administration Guide
Themetasync service is managed by the service management facility,smf(5), underthe service identifier:
svc:/system/mdmonitor
Administrative actions on this service, such as enabling, disabling, or requesting restart,can be performed usingsvcadm(1M). The service's status can be queried usingthesvcs(1) command.
Copyright © 2011, Oracle and/or its affiliates. All rights reserved.Legal Notices |   |