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If the device(s) permanently vanish, it may be worth reconfiguring the passthrough driver (only Unix).. Other issues invo lving the pass-through driver are very rare The majority of drive/tape issues have a cause outside of NetBackup.. Unix servers require a passthrough driver For example, on Solaris this is called the sg driver.
Although the scan command is supplied by Symantec, it does not issue any NetBackup commands, or inter act with NetBackup in any way.. For example: Oct 11 08:59:31 media bptm[3771]: [ID 228150 daemon warning] TapeAlert Code: 0x03, Type: Warning, Flag: HARD ERROR, from drive TLD0_LTO4_DRIVE1 (index 4), Media Id R0TP01 To further investigate TapeAlert issues, Symantec recommends contacting your hardware vendor.
See the device configuration guide for information on how to do this Aside from the exceptions, above issues with the scan command are not caused by NetBackup.. 5 The following tables list NetBackup 5200 Series, 5300 Series, and Virtual release versions, the Appliance models supported with each version, the associated NetBackup Appliance software version, and the NetBackup Release version on which it is based.. The devices appearing in (for example) 'Device Manager' (Windows) or cfgadm (Solaris) is NOT enough to sufficiently confirm that the devices are correctly configured to the operating system.. This is requi red as the SCSI commands issued to query the device cannot be passed to the devices via the regular opera ting system driver.
Known Issues: Some 6GB SAS HBAs are not compatable mpt_sas driver as details in Oracles TapeAlert/Tape Alert A tape alert message is a critical, warning, or informational alert that occurs due to a tape drive or robotic library hardware event.. For example: when using Solaris, NetBackup relies on the operating system to write the data to the tape using the st tape driver.. Two things need to be checked before further troubleshooting is carried out: 1 Ensure no backups are running on the drives (only applicable if the drives are shared).. It should always be considered that although NetBackup reports an error, it does not mean that NetBackup is the cause.. For example, the 'test-unit-ready' SCSI command is used, for example, when mounting a tape.. In the event this does not clear the issue, it has at least been eliminated from being the cause.. There are no settings, tuning or troubleshooting that can be performed on the scan command.. If the OS setup of the drives has not changed this is unlikely to be the issue Even so, it can be worth remo ving this as a possible cause.. As a TapeAlert is sent from the drive itself, it is impossible that this can be caused by NetBackup.. Taunton's netbackup 7 1 cannot connect to robotic software daemon has here Ya Documents 3-steps.. On occasion, it is necessary to recreate/rebuild the pass-through driver The most common symptom that invo lves the pass-through driver is if the scan command does not show all expected devices.. Tapes failing to mount in NetBackup, but visable and usable by operating system commands Issues moving tapes to/ from slots or drives Issues with Cartridge memory Cleaning tape Status 277 In the first instance, it is always worth power cycling the library or drives reporting an issue, as well as reb ooting the associated servers, Many of the errors referenced in this tech note can be sometimes be cleared this way.. Rebuild the passthrough driver (Unix only) If the drive/operating system configuration has not chang ed, then this is very unlikely to be the issue.. These 'tape alert' messages are stored on the tape drive or robotic library Applications like NetBackup query the tape device or robotic library for these 'tape alert' messages and display the 'tape alerts' to the user.. 'Tape alert' messages are reported in the NetBackup bptm log The tape alert technology detects and logs hardware and media errors.. Symantec NetBackup™ Security and Encryption Guide UNIX, Windows, and Linux Release 7.. When it is understood how the scan command works, it is clear how the root of the issues are external to NetBackup.. Solution It is important to understand that NetBackup does not write data directly to a tape drive.. A SCSI reserve ation of a drive due to a backup may prevent the drive from responding to, and thus appearing in the output of the scan command.. Other operating systems work in a similar manner The SCSI pass-through driver (sg driver on Solaris) - allows SCSI commands to be passed directly to the drive.. However, it can be eliminated from being the cause by recrea ting the passthrough links and files.. In this example, robtest was failing to load a tape into a drive. When run, it issues operating system level SCSI commands to the devices configured in the operating system, and the output of the command is sent from the devices themselves.. The SCSI reservation of a drive may stop the drive from showing in the output of the scan command.. Windows servers do not require a passthrough driver Providing that there are no backups running on the other servers that may share the drives, then the problem will be caused by either an issue regarding the SAN, firmware, hardware or drivers.. Problem Troubleshooting Drive/Library Issues in NetBackup This document provides information on, and how to resolve, various tape drive issues that may be encountered whilst using NetBackup.. When troubleshooting these issues it is advisable to start the troubleshooting process at the hardware/firmware level.. Scan Command Scenario: The scan command shows no devices at all, or, that some of the devices, or all of the devices app ear and reappear when the command is run repeatedly.. g Switches), HBAs or the physical drive/library Consideration should also be given to HBA configuration files, as incorrect settings in these have been seen to prevent output from the scan command being returned.. Check the Event Viewer/ system log for any hardware related error s Contact the Original Equipment Manufacturer (OEM) for support.. Firstly, it must be confirmed that the operating system can both see and communicate correctly with the ta pe drives.. See the device configuration guide for information on how to do this If the scan command shows devices vanishing and reappearing, then the passthrough driver is not the cause.. Providing the passthrough driver is configured, Symantec recommends to consult your hardware vendors and/or Operating System/SAN Administrators to further investigate the root cause of scan command issues.. It is important to remember that while NetBackup displays these 'tape alerts', the alerts occur due to a tape drive or robotic library hardware event.. Consideration should be given to SAN infrastructure (e g Switches), HBAs or the physical drive/library.. If the issue is still not resolved, then it will be as per servers, that is, SAN infrastructure (e.. Ask recordar que example cryptography host disease; Common drive issues include: Scan command TAPE_ALERT ASC/ASCQ Missing Path Positioning errors Read/ Write errors I/O Errors External event has caused rewind Tapes not reaching expected capacity tape ( 300GB of Data is written to a 400GB capacity tape ) Tapes being incorrectly marked as 'read only' Library Inventory Issues Robot load issue - 'Error bptm error requesting media TpErrno = Robot operation failed' Missing drives, or drives disappearing and reappearing.. It has been seen that although devices appear to be visible to the operating system, SAN issues prevented full/correct communication, and as a result, the scan command failed.
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