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smartctl : Disk information |
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Written by geekyB
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Monday, 22 December 2008 15:50 |
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smartctl is a Linux command that controls the Self-Monitoring, Analysis and Reporting Technology (SMART) system built into many ATA-3 and later ATA, IDE and SCSI-3 hard drives. The purpose of SMART is to monitor the reliability of the hard drive and predict drive failures, and to carry out different types of drive self-tests. "smartctl" can be used to know various information about the disks in your Linux system.
Device information : To know about the model, make and serial number of the disk, use "smartctl -a"
[root@geekyB ~]# smartctl -a /dev/sdb
smartctl version 5.36 [x86_64-redhat-linux-gnu] Copyright (C) 2002-6 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
Device: FUJITSU MYB2008RX Version: D406
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Last Updated on Monday, 22 December 2008 15:57 |
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Netapp Snapvault guide |
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Written by geekyB
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Monday, 22 December 2008 07:04 |
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Netapp SnapVault is a heterogeneous disk-to-disk backup solution for Netapp filers and heterogeneous OS systems (Windows, Linux , Solaris, HPUX and AIX). Basically, Snapvault uses Snapshot technology to store online backups. In event of data loss or corruption on a filer, the backup data can be restored from the SnapVault filer with less downtime. It has significant advantages over traditional tape backups, like
- Media cost savings
- Reduce backup windows versus traditional tape-based backup
- No backup/recovery failures due to media errors
- Simple and Fast recovery of corrupted or destroyed data
Snapvault consists of major two entities – snapvault clients and a snapvault storage server. A snapvault client (Netapp filers and unix/windows servers) is the system whose data should be backed-up. The SnapVault server is a Netapp filer – which gets the data from clients and backs up data.
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Last Updated on Tuesday, 23 December 2008 03:28 |
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ZFS Volume as swap device |
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Written by geekyS
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Saturday, 20 December 2008 17:00 |
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This Geekyfacts article explains the procedure to use zfs volume as swap device Creating a ZFS volume of size 1gb [root@geekyfacts]# zfs create -V 1gb testpool/swapvol [root@geekyfacts]# zfs list
NAME USED AVAIL REFER MOUNTPOINT
testpool 1.00G 880M 18K /testpool
testpool/swapvol 1G 1.86G 16K - |
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Last Updated on Thursday, 01 January 2009 09:27 |
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Adding or Delegating ZFS File system to Non-Global Zones |
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Written by geekyS
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Saturday, 20 December 2008 17:47 |
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This Geekyfacts article explains the procedure to add & delegate ZFS file system to Non-Global zone
Adding ZFS File system to a Non-Global Zone
ZFS file system can be added to Non-global zones using zonecfg command's add fs option. Before adding, the file system mountpoint property should be set to legacy and file system should not been mounted already in another location. Non-global zone can create and delete files under the added file system, but it will not get the contol to change the file system properties like mountpoint,readonly,atime,compression. Global zone is responsible for controlling and managing the file system. |
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Last Updated on Monday, 22 December 2008 08:37 |
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Netapp Snapshot Management Cheat Sheet |
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Written by geekyS
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Friday, 19 December 2008 10:55 |
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This article explains the different commands related to Netapp Snapshot Management. Creating a test volume of 10gb to perform snapshot related operations geekyfacts-filer > vol create testvol aggr 10g
Creation of volume 'testvol' with size 10g on containing aggregate geekyfacts-filer > df -h testvol
Filesystem total used avail capacity Mounted on
/vol/testvol/ 8192MB 1420KB 8190MB 0% /vol/testvol/
/vol/testvol/.snapshot 2048MB 0MB 2048MB 0% /vol/testvol/.snapshot
geekyfacts-filer >
Snapshot Create |
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Last Updated on Monday, 22 December 2008 08:36 |
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