Maintaining Mirrored Systems

CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems

Repairing or rebuilding the /cms file system

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Repairing or rebuilding the /cms file system

Repairing /cms

This section contains procedures for reinitializing the /cms file system. You may need to perform this procedure in case of disk corruption or some other catastrophic system problem. The point of the procedure is to repair /cms or, failing that, to rebuild it and restore the latest available CMS data. Try to repair the file system first: if you can repair it, you will save considerable time and trouble.

This procedure attempts to repair /cms.

1.Turn off CMS.

a.Enter a cmsadm or cmssvc command.

b.Select the run_cms option.

c.Select the Turn off CMS option.

2.Unmount /cms:

#umount /cms

The system prompt should return without messages, as shown.

3.Do this step only if the umount command returned the response /cms: device busy.

a.Load the /etc/vfstab file into your editor.

b.Find the /cms and /cms/swap lines. Comment out both lines. (To comment out a line, insert a pound sign at the beginning.)

c.Save the file and exit the editor.

d.Reboot by entering the following command:

# /usr/sbin/shutdown -i6 -g0 -y

4.Attempt to repair /cms:

#fsck -y /dev/md/rdsk/d21 ** /dev/md/dsk/d21

** Last mounted on /cms

** Phase 1 - Check Blocks and Sizes ** Phase 2 - Check Pathnames

** Phase 3 - Check Connectivity

** Phase 4 - Check Reference Counts ** Phase 5 Check Cyl groups

2060 files, 564453 used, 6468748 free (1900 frags, 808356 blocks, 0.0%

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Lucent Technologies 585-210-940 manual Repairing or rebuilding the /cms file system, Repairing /cms, # umount /cms
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585-210-940 specifications

Lucent Technologies, founded in 1996 as a spin-off from AT&T, emerged as a leader in telecommunications, contributing significantly to the advancement of network technologies. The model 585-210-940, an innovative product from Lucent, exemplifies their commitment to providing cutting-edge solutions for communication networks.

The 585-210-940 is primarily recognized as a digital cross-connect system (DCS) designed to manage and route digital voice and data traffic efficiently. This system plays a crucial role in facilitating seamless communication by allowing service providers to interconnect different digital circuits and manage bandwidth effectively. One of the main features of the 585-210-940 is its ability to support multiple protocols, which enhances interoperability among diverse communication platforms.

A standout characteristic of this system is its scalability. The 585-210-940 can adapt to growing network demands, making it suitable for both small enterprises and large service providers. This flexibility ensures that users can expand their systems without a complete overhaul, thereby reducing costs and downtime during upgrades. Additionally, the system provides fault tolerance, ensuring high availability and reliability, which are essential metrics for any critical telecommunications infrastructure.

Lucent Technologies also integrated advanced monitoring and management capabilities into the 585-210-940. This feature allows operators to track performance metrics and identify potential issues in real time. The system includes a user-friendly interface that simplifies network management tasks, making it accessible to operators with varying levels of technical expertise.

Moreover, the 585-210-940 is designed to support high capacity, handling numerous channels simultaneously without compromising performance. This capability is particularly beneficial in environments with heavy data traffic, such as urban centers or large corporate hubs.

In conclusion, Lucent Technologies' 585-210-940 serves as a robust solution for telecommunications, encapsulating many of the core innovations of the late 20th century. With its support for multiple protocols, scalability, fault tolerance, and advanced management capabilities, it stands out as an essential component for any modern communication network, reflecting Lucent's legacy in the industry.
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