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VXVM 3.5 Rootdg corrupt/recovery
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voldctl(8) System Manager's Manual voldctl(8) NAME
voldctl - Controls the volume configuration daemon SYNOPSIS
/sbin/voldctl init [hostid] /sbin/voldctl hostid hostid /sbin/voldctl add disk accessname [attr[=value]]... /sbin/voldctl rm disk accessname... /sbin/voldctl list /sbin/voldctl enable /sbin/voldctl disable /sbin/voldctl [-k] stop /sbin/voldctl mode /sbin/voldctl license [init] DESCRIPTION
The voldctl utility manages some aspects of the state of the volume configuration daemon, vold, and manages configuration aspects related to bootstrapping the rootdg disk group configuration. A key part of the state of vold and of bootstrapping the rootdg disk group is the /etc/vol/volboot file. This file contains a host ID, which is usually the host name, that LSM uses to establish ownership of physical disks. This host ID is used to ensure that two or more hosts that can access disks on a shared SCSI bus will not interfere with each other in their use of those disks. This host ID is also important in the generation of some unique ID strings that are used internally by the Logical Storage Manager for stamping disks and disk groups. The /etc/vol/volboot file may also contain a list of disks to scan in search of the rootdg disk group. This list is only needed if the autoconfiguration functionality of LSM is disabled (see vold(8) for details). At least one disk in the list must be both readable and a part of the rootdg disk group, or the Logical Storage Manager will not be able to start up correctly. The vold daemon operates in one of three modes: enabled, disabled, or booted. The enabled state is the normal operating state. Most con- figuration operations are allowed in the enabled state. Entering the enabled state imports all disk groups that were previously imported on this host, and begins the management of device nodes stored in the /dev/vol and /dev/rvol directories. In the disabled state, vold does not retain configuration information for the imported disk groups, and does not maintain the volume device directories. Most operations are disallowed in the disabled state. Certain failures, most commonly the loss of all disks or configuration copies in the rootdg disk group, will cause vold to enter the disabled state automatically. The booted state is entered as part of normal system startup, prior to checking the root file system (see fsck(1)). Entering the booted mode imports the rootdg disk group, and then waits for a request to enter the enabled mode. The volume device node directories are not maintained in booted mode, because it may not be possible to write to the root file system. KEYWORDS
The action performed by voldctl depends upon the keyword specified as the first operand. Supported keywords are: Reinitializes the /etc/vol/volboot file with a new host ID (which is usually the host name), and an empty list of disks. If a hostid operand is specified, this string is used; otherwise, a default host ID is used. On systems with a hardware-defined system ID, the default host ID might be derived from this hardware ID. Changes the host ID, which is usually the host name, in the /etc/vol/volboot file and on all disks in disk groups currently imported on this machine. It may be desirable to change the Logical Storage Manager host ID for your machine if you are also changing the network node name of your machine. If some disks are inaccessible at the time of a hostid operation, it may be necessary to use the voldisk clearimport operation to clear out the old host ID on those disks when they become reaccessible. Otherwise, you may not be able to re-add those disks to their disk groups. Note Take care when using this command. If the system crashes before the hostid operation completes, some disk groups may not reimport automatically. Adds to the list of disks in the /etc/vol/volboot file. Disks are specified based on their disk access name. This name identifies the physical address of the disk. For example, to add disk dsk3c you might use the command: /sbin/voldctl add disk dsk3c If there is a disk access record in the rootdg configuration for the named disk, configuration parameters are taken from that record. Otherwise, it may be necessary to specify some attributes to voldctl add disk. Removes one or more disks from the /etc/vol/volboot file. Disks are specified based on the name used in the corresponding voldctl add disk operation. Lists the con- tents of the /etc/vol/volboot file. This list includes the host ID (which is usually the host name), some sequence numbers, and the list of disks and disk attributes stored in the /etc/vol/volboot file. Requests that vold enter enabled mode, import all disk groups that were previously imported on this host, and rebuild the volume device node directories. This operation can be used even if vold is already in enabled mode, however any deported disk groups remain deported. The primary purpose for using this operation when in enabled mode is to rebuild the volume device nodes. This operation will also cause vold to scan for any disks that were newly added since vold was last started. In this manner, disks can be dynamically configured to the system and then recognized by the Logical Storage Manager. If this operation fails, voldctl exits with the appropriate error status and displays an error message. Requests that vold enter disabled mode. This may be necessary to perform some maintenance operations. This does not disable any configuration state loaded into the kernel. It only prevents further configuration changes to loaded disk groups until vold is re-enabled. Requests that vold exit. This may be necessary to reset the Logical Storage Manager, such as using the -r reset option to vold. This does not disable any configuration state loaded into the kernel. It only affects the ability to make configuration changes until vold is restarted. If the -k option is used vold will be stopped by sending it a SIGKILL signal. The command will delay for up to 1 second to verify that vold has exited. After 1 second if vold has not exited an error will be returned. Prints the current operating mode of vold. The output format is: mode: operating_mode where operating_mode is either enabled, disabled, booted, or not-running. With an argument of init, requests that vold re-read any persistently stored license information. If licenses have expired, this may cause some features to become unavailable. If new licenses have been added, this will make the features defined in those licenses available. With no arguments, voldctl license prints the list of features which are currently available based on known licensing information. SEE ALSO
volintro(8), vold(8), voldg(8), voldisk(8), signal(4) voldctl(8)
VXVM 3.5 Rootdg corrupt/recovery