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sndrsyncd(1m) [opensolaris man page]

sndrsyncd(1M)						  System Administration Commands					     sndrsyncd(1M)

NAME
sndrsyncd - Availability Suite Remote Mirror update resynchronization daemon SYNOPSIS
/usr/lib/sndrsyncd DESCRIPTION
The sndrsyncd daemon automates update resynchronization after a network or machine failure and invokes Point-in-Time Copy copies when needed to protect the data volumes being updated during a resynchronization. The daemon is notified by the kernel when a network link being used by Remote Mirror goes down and invokes the sndradm(1M) command with the -u option to resynchronize all Remote Mirror sets which have autosync switched on and are using the network link. See sndradm(1M) for details on how to configure autosync for a Remote Mirror set. The daemon is also notified when any Remote Mirror resynchronization starts or completes. The daemon takes Point-in-Time Copy snapshots, if configured in the Availability Suite configuration file. On a secondary server, the daemon checks if a file system is currently mounted on the secondary volume and informs the kernel not to allow the synchronization to start if the file system is currently mounted. EXIT STATUS
0 Daemon started successfully. >0 Daemon failed to start. FILES
/lib/svc/method/svc-rdcsyncd Shell script for starting sndrsyncd. /lib/svc/method/svc-rdc Shell script for stopping sndrsyncd. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWrdcr, SUNWrdcu | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
iiadm(1M), sndradm(1M), sndrd(1M), svcadm(1M), ds.log(4), rdc.cf(4), attributes(5) NOTES
Do not manually stop the sndrsyncd deamon. If you need to manually stop sndrsyncd perform these steps. This stops both the sndrd and sndrsyncd daemons. # svcadm disable svc:/system/nws_rdc # svcadm disable svc:/system/nws_rdcsyncd Do not manually start or restart the sndrsyncd deamon. If you need to manually start sndrsyncd perform these steps. This starts both the sndrd and sndrsyncd daemons. # svcadm enable svc:/system/nws_rdc # svcadm enable svc:/system/nws_rdcsyncd See svcadm(1M) for additional information. SunOS 5.11 2 Oct 2007 sndrsyncd(1M)

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rdc.cf(4)							   File Formats 							 rdc.cf(4)

NAME
rdc.cf - Availability Suite Remote Mirror software configuration file DESCRIPTION
The rdc.cf is an optional configuration file that supplies the sndradm(1M) command with details of the volume sets to be operated on. Inrdc.cf, the volume sets and their host locations are defined in the following format: post pdevice pbitmap shost sdevice sbitmap protocol mode options The rdc.cf fields are: phost (primary host) Server on which the primary volume resides. pdevice (primary device) Primary volume partition to be copied. Specify only full path names (for example, /dev/rdsk/c0t1d0s2). pbitmap (primary bitmap) Volume partition in which the bitmap (scoreboard logs) of the primary partition is stored. Specify only full path names (for exam- ple, /dev/rdsk/c0t1d0s3). shost (secondary host) Server on which the secondary volume resides. sdevice (secondary device) Secondary volume partition. Specify only full path names (for example,/dev/rdsk/c0t1d0s4). sbitmap (secondary bitmap) Volume partition in which the bitmap (scoreboard logs) of the secondary file is stored. Specify only full path names (for example, /dev/rdsk/c0t1d0s5). protocol Network transfer protocol. Specify IP. mode Remote Mirror operating mode. Sync is the Remote Mirror mode where the I/O operation is not confirmed as complete until the remote volume has been updated. Async is the other Remote Mirror mode, in which the primary host I/O operation is confirmed as complete before updating the remote volume. options A consistency group name can be specified using the g character. A disk queue volume partition can be specified using the q character, using full path name only (/dev/rdsk/c0t1d0s5). Without the q character set will default to memory base queue. When running on a clustered system, a cluster resource group tag can be specified using the C character. These options have the following syntax: [g io_groupname] [q queue_volume][C ctag] Note - When running on a cluster configuration, the cluster resource group tag is appended to the Remote Mirror set by default. ATTRIBUTES
See attributes(5) for a description of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Architecture |x86 | +-----------------------------+-----------------------------+ |Availability |SUNWrdcu | +-----------------------------+-----------------------------+ |Interface Stability |Committed | +-----------------------------+-----------------------------+ SEE ALSO
sndradm(1M), sndrd(1M), attributes(5) SunOS 5.11 08 Jun 2007 rdc.cf(4)

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