Sun Oracle Storage Tek T10000, Справочное руководство

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Log Sense Command
94 T10000: Interface Reference Manual • January 2011 • E20425-01
TapeAlert Page
The TapeAlert Log Sense page (2Eh) is read from a tape drive at the following
times, as a minimum:
• At the beginning of a write/read job, after the media is loaded.
• Immediately after a fatal error during the write/read job.
• At the end of each tape when the write/read job spans multiple tapes.
• At the end of a write/read job, when the tape has been unloaded.
Each flag will be cleared to zero in the following circumstances:
• At drive power on.
• When the TapeAlert Log page is read.
• When specified corrective action has been taken (such as using a cleaning
cartridge).
• On a reset.
Note: The entire TapeAlert page should be read to obtain all the information.
When a flag is cleared by reading the TapeAlert page, a flag cannot be set
again until the error condition is removed (for example, the specific corrective
action has been taken).
A Log Select Reset for the TapeAlert page does not reset the TapeAlert flags.
It is rejected with Illegal Request.
TapeAlert Flags
Table 63. TapeAlert Flags
Code Flag Name Description Length
(bytes)
0001h Read Warning Drive has difficulty reading 1
0002h Write Warning Drive has difficulty writing 1
0003h Hard Error Write or read hard error has occurred

(flags 4, 5, 6)
1
0004h Media Unrecoverable read, write, or positioning
error caused by faulty media 1
0005h Read Failure Hard read error, hardware or media 1
0006h Write Failure Hard write error, hardware or media 1
0007h Media Life Media has exceeded the life pass count 1
0008h Not Data Grade Not supported 1