src/lib/libmt, branch main

mt(1)/libmt: Add LTO-10 density codes and specs.

2026-03-02T19:13:47Z

These were obtained from IBM specs and actual tapes/drives. Standard LTO-10 cartriges hold 30TB raw, 75TB with 2.5:1 compression. Premium LTO-10 cartridges hold 40TB raw, 100TB with 2.5:1 compression. LTO-10 tape drives are not backward compatible with previous generation LTO tapes. (This is a change from older generation drives.) Since the Premium tape is a new thing for LTO, we'll call this density code LTO-10P vs. the standard LTO-10. The barcode identifier for LTO-10 tapes is "LA"; the barcode identifier for LTO-10P tapes is "PA". LTO-10 cartridges contain 1035m of tape, while LTO-10 Premium cartridges contain 1337m of tape and have slightly higher density. (Obtained from MAM data on actual tape cartridges and the density report, obtained via 'mt getdensity'.) LTO-10 cartridges use a polyethylene naphthalate (PEN) film substrate. LTO-10 Premium cartridges use an Aramid (aromatic polyamide) substrate that is thinner and stronger, allowing a longer tape to fit in the same cartridge form factor. usr.bin/mt/mt.1: Add density codes and specs for LTO-10 and LTO-10P. lib/libmt/mtlib.c: Add density codes for LTO-10 and LTO-10P. Sponsored by: Spectra Logic MFC after: 3 days

Remove residual blank line at start of Makefile

2024-07-15T22:43:39Z

This is a residual of the $FreeBSD$ removal. MFC After: 3 days (though I'll just run the command on the branches) Sponsored by: Netflix

lib: Automated cleanup of cdefs and other formatting

2023-11-27T05:23:59Z

Apply the following automated changes to try to eliminate no-longer-needed sys/cdefs.h includes as well as now-empty blank lines in a row. Remove /^#if.*\n#endif.*\n#include\s+.*\n/ Remove /\n+#include\s+.*\n+#if.*\n#endif.*\n+/ Remove /\n+#if.*\n#endif.*\n+/ Remove /^#if.*\n#endif.*\n/ Remove /\n+#include\s+\n#include\s+/ Remove /\n+#include\s+\n#include\s+/ Remove /\n+#include\s+\n#include\s+/ Sponsored by: Netflix

Add IBM TS1170 density codes and specs.

2023-10-31T19:20:36Z

These were obtained from a drive, but they agree with the IBM documentation. The bpi/bpmm values are the same as TS1160, but the number of tracks is much larger (18944 tracks vs 8704 for TS1160). The tapes are also longer, 1337m total. (According to the MAM on a sample JF tape. I don't have a JE tape handy to compare.) The end result is a 50TB raw capacity (150TB compressed) for TS1170 with a JF cartridge vs 20TB raw capacity (60TB compressed) for TS1160 with a JE cartridge. lib/libmt/mtlib.c: Add the TS1170 density codes to the denstiy table in libmt. usr.bin/mt/mt.1: Add the TS1170 density codes and specs to the density table in the mt(1) man page. As usual for TS drives, there is an encrypted and non-encrypted density code (0x79 and 0x59 respectively). MFC after: 3 days Sponsored by: Spectra Logic

Remove $FreeBSD$: two-line nroff pattern

2023-08-16T17:55:10Z

Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/

Remove $FreeBSD$: one-line sh pattern

2023-08-16T17:55:03Z

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

Remove $FreeBSD$: one-line .c pattern

2023-08-16T17:54:42Z

Remove /^[\s*]*__FBSDID$"\$FreeBSD\$"$;?\s*\n/

Remove $FreeBSD$: two-line .h pattern

2023-08-16T17:54:16Z

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

mt(3): Fix a typo in the manual page

2022-04-06T16:41:08Z

- s/mulitple/multiple/ MFC after: 3 days

Add the LTO-9 density code to libmt and the mt(1) man page.

2020-12-10T21:06:06Z

These values are taken directly from the density report from an IBM LTO-9 tape drive. (Using mt getdensity) A LTO-9 drive stores 18TB raw (45TB with compression) on an LTO-9 tape. lib/libmt/mtlib.c: Add the LTO-9 density code, and bpmm/bpi values. usr.bin/mt/mt.1: Add the LTO-9 density code, bpmm/bpi values and number of tracks. Bump the man page date. MFC after: 3 days Sponsored by: Spectra Logic