Lines Matching +full:non +full:- +full:specified
1 .. SPDX-License-Identifier: GPL-2.0
18 to any specific tape drive. The tape parameters can be specified with
23 flexible method and applicable to single-user workstations. However,
32 drive performs auto-detection of the tape format well (like some
33 QIC-drives). The result is that any tape can be read, writing can be
37 does not perform auto-detection well enough and there is a single
40 or not :-).
57 between formats in multi-tape operations (the explicitly overridden
72 limits). Both the auto-rewind (minor equals device number) and
73 non-rewind devices (minor is 128 + device number) are implemented.
128 dev_upper non-rew mode dev-lower
129 20 - 8 7 6 5 4 0
131 The non-rewind bit is always bit 7 (the uppermost bit in the lowermost
132 byte). The bits defining the mode are below the non-rewind bit. The
143 and non-rewind entries for each mode. The names are stxy and nstxy, where x
151 the defaults set by the user. The value -1 means the default is not set. The
166 directory corresponding to the mode 0 auto-rewind device (e.g., st0).
179 regular expression "^st[0-9]+$"
191 - The number of I/Os currently outstanding to this device.
193 - The amount of time spent waiting (in nanoseconds) for all I/O
198 - The number of I/Os issued to the tape drive other than read or
200 following calculation io_ms-read_ms-write_ms.
202 - The number of bytes read from the tape drive.
204 - The number of read requests issued to the tape drive.
206 - The amount of time (in nanoseconds) spent waiting for read
209 - The number of bytes written to the tape drive.
211 - The number of write requests issued to the tape drive.
213 - The amount of time (in nanoseconds) spent waiting for write
216 - The number of times during a read or write we found
217 the residual amount to be non-zero. This should mean that a program
257 is not possible, a driver buffer allocated at run-time is used. If
262 - one or more pages are at addresses not reachable by the HBA
263 - the number of pages in the transfer exceeds the number of
265 - one or more pages can't be locked into memory (should not happen in
273 allowed if ST_BUFFER_WRITES is non-zero and direct i/o is not used.
280 -b option) may have had good throughput but this is not true any more with
282 is to use bigger write() byte counts (e.g., tar -b 64).
291 tape after the early-warning mark to flush the driver buffer.
298 Scatter/gather buffers (buffers that consist of chunks non-contiguous
307 this size (and it is not larger than the buffer size specified by
312 2. The scatter/gather segments to fill the specified buffer size are
317 are used to extend the buffer at run-time if this is necessary. The
320 segments specified. If the maximum number allowed for the SCSI adapter
330 returns -1 and errno is set to ENOSPC. To enable writing a trailer,
332 bytes is returned. After this, -1 and the number of bytes are
349 tape drive if this is non-zero
353 set, the write threshold is set to the new buffer size - 2 kB.
368 the driver as module. If several parameters are set, the keyword-value
381 - aa is the buffer size for fixed block mode in 1024 byte units
382 - bb is the write threshold in 1024 byte units
383 - dd is the maximum number of scatter/gather segments
393 (look for a package mt-st* from the Linux ftp sites; the GNU mt does
431 Re-tension tape.
439 Seek to tape block count. Uses Tandberg-compatible seek (QFA)
440 for SCSI-1 drives and SCSI-2 seek for SCSI-2 drives. The file and
470 specified by MTSEEK. MTSETPART is inactive unless
474 partitions (argument non-zero). If the argument is positive,
480 LTO drives from LTO-5 upwards. The drive has to support partitions
481 with size specified by the initiator. Inactive unless
495 parenthesis is specified whether the option is global or
496 can be specified differently for each mode):
524 the MTSEEK and MTIOCPOS for SCSI-2 drives instead of
552 specified by the lowest bits.
565 contains the new default. If the bits 8-15 are set to a
566 non-zero number, and this number is not 0xff, the number is
586 cleaning. The bits are device-dependent. The driver is
588 bits of the argument; must be >= 18 (values 1 - 17
590 a mask to select the relevant bits (the bits 9-16), and the
591 bit pattern (bits 17-23). If the bit pattern is zero, one
593 the pattern is non-zero, the pattern must match the masked
604 Tandberg-compatible QFA for SCSI-1 drives and the SCSI-2
605 command for the SCSI-2 drives.
612 block is -1 when it can't be determined (e.g., after MTBSF).
668 the driver is waiting. With the command 'ps -l' you can see the state