Agreed - the short form is: the tape header needs no instructions, and each DLE file might be done with a different mechanism (true for me) so each DLE backup has the instructions in the header.
Deb Baddorf Fermilab > On May 28, 2019, at 11:49 AM, Charles Curley > <[email protected]> wrote: > > On Tue, 28 May 2019 11:40:33 -0400 > Gene Heskett <[email protected]> wrote: > >> In my build on stretch the tape header, with normally contains >> instructions for a gzip/tar only system, the recipe for bare recovery >> has disappeared. It now looks like this: >> AMANDA: TAPESTART DATE 20190527162707 TAPE Dailys-1 >> >> There is supposed to be a 2nd line, showing how to unpack the archive >> with nothing but gzip and tar, >> >> >> Cheers, Gene Heskett > > I can confirm that for the first file per VTAPE on my build: > > root@amanda2:/var/amanda/vtapes/slot1# od -N 96 -A x -t x1z -v > 00000.DailySet1-001 > 000000 41 4d 41 4e 44 41 3a 20 54 41 50 45 53 54 41 52 >AMANDA: TAPESTAR< > 000010 54 20 44 41 54 45 20 32 30 31 39 30 35 32 37 31 >T DATE 201905271< > 000020 33 30 38 34 35 20 54 41 50 45 20 44 61 69 6c 79 >30845 TAPE Daily< > 000030 53 65 74 31 2d 30 30 31 0a 0c 0a 00 00 00 00 00 >Set1-001........< > 000040 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................< > 000050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................< > 000060 > root@amanda2:/var/amanda/vtapes/slot1# > > However it also seems to be the case for Amanda 3.3.9-5, the current > stable version on debian: > > root@hawk:/crc/backs/myob/amanda/DailySet1/slot1# od -N 96 -A x -t x1z -v > 00000.DailySet1_01 > 000000 41 4d 41 4e 44 41 3a 20 54 41 50 45 53 54 41 52 >AMANDA: TAPESTAR< > 000010 54 20 44 41 54 45 20 32 30 31 39 30 34 31 32 30 >T DATE 201904120< > 000020 30 30 31 30 31 20 54 41 50 45 20 44 61 69 6c 79 >00101 TAPE Daily< > 000030 53 65 74 31 5f 30 31 0a 0c 0a 00 00 00 00 00 00 >Set1_01.........< > 000040 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................< > 000050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................< > 000060 > root@hawk:/crc/backs/myob/amanda/DailySet1/slot1# > > But if you look at the next one, the first real backup file, > starting at about 0x190 or so... > > root@amanda2:/var/amanda/vtapes/slot1# od -N 544 -A x -t x1z -v > 00001.localhost._root.0 > 000000 41 4d 41 4e 44 41 3a 20 53 50 4c 49 54 5f 46 49 >AMANDA: SPLIT_FI< > 000010 4c 45 20 32 30 31 39 30 35 32 37 31 33 30 38 34 >LE 2019052713084< > 000020 35 20 6c 6f 63 61 6c 68 6f 73 74 20 2f 72 6f 6f >5 localhost /roo< > 000030 74 20 20 70 61 72 74 20 31 2f 2d 31 20 20 6c 65 >t part 1/-1 le< > 000040 76 20 30 20 63 6f 6d 70 20 2e 67 7a 20 70 72 6f >v 0 comp .gz pro< > 000050 67 72 61 6d 20 2f 62 69 6e 2f 74 61 72 0a 4f 52 >gram /bin/tar.OR< > 000060 49 47 53 49 5a 45 3d 34 30 0a 4e 41 54 49 56 45 >IGSIZE=40.NATIVE< > 000070 2d 43 52 43 3d 32 61 61 38 62 32 65 35 3a 34 30 >-CRC=2aa8b2e5:40< > 000080 39 36 30 0a 43 4c 49 45 4e 54 2d 43 52 43 3d 37 >960.CLIENT-CRC=7< > 000090 66 36 30 33 61 32 66 3a 39 35 33 31 0a 53 45 52 >f603a2f:9531.SER< > 0000a0 56 45 52 2d 43 52 43 3d 37 66 36 30 33 61 32 66 >VER-CRC=7f603a2f< > 0000b0 3a 39 35 33 31 0a 44 4c 45 3d 3c 3c 45 4e 44 44 >:9531.DLE=<<ENDD< > 0000c0 4c 45 0a 3c 64 6c 65 3e 0a 20 20 3c 70 72 6f 67 >LE.<dle>. <prog< > 0000d0 72 61 6d 3e 47 4e 55 54 41 52 3c 2f 70 72 6f 67 >ram>GNUTAR</prog< > 0000e0 72 61 6d 3e 0a 20 20 3c 64 69 73 6b 3e 2f 72 6f >ram>. <disk>/ro< > 0000f0 6f 74 3c 2f 64 69 73 6b 3e 0a 20 20 3c 6c 65 76 >ot</disk>. <lev< > 000100 65 6c 3e 30 3c 2f 6c 65 76 65 6c 3e 0a 20 20 3c >el>0</level>. << > 000110 61 75 74 68 3e 42 53 44 54 43 50 3c 2f 61 75 74 >auth>BSDTCP</aut< > 000120 68 3e 0a 20 20 3c 63 6f 6d 70 72 65 73 73 3e 46 >h>. <compress>F< > 000130 41 53 54 3c 2f 63 6f 6d 70 72 65 73 73 3e 0a 20 >AST</compress>. < > 000140 20 3c 72 65 63 6f 72 64 3e 59 45 53 3c 2f 72 65 > <record>YES</re< > 000150 63 6f 72 64 3e 0a 20 20 3c 69 6e 64 65 78 3e 59 >cord>. <index>Y< > 000160 45 53 3c 2f 69 6e 64 65 78 3e 0a 20 20 3c 64 61 >ES</index>. <da< > 000170 74 61 70 61 74 68 3e 41 4d 41 4e 44 41 3c 2f 64 >tapath>AMANDA</d< > 000180 61 74 61 70 61 74 68 3e 0a 3c 2f 64 6c 65 3e 0a >atapath>.</dle>.< > 000190 45 4e 44 44 4c 45 0a 54 6f 20 72 65 73 74 6f 72 >ENDDLE.To restor< > 0001a0 65 2c 20 70 6f 73 69 74 69 6f 6e 20 74 61 70 65 >e, position tape< > 0001b0 20 61 74 20 73 74 61 72 74 20 6f 66 20 66 69 6c > at start of fil< > 0001c0 65 20 61 6e 64 20 72 75 6e 3a 0a 09 64 64 20 69 >e and run:..dd i< > 0001d0 66 3d 3c 74 61 70 65 3e 20 62 73 3d 33 32 6b 20 >f=<tape> bs=32k < > 0001e0 73 6b 69 70 3d 31 20 7c 20 2f 62 69 6e 2f 67 7a >skip=1 | /bin/gz< > 0001f0 69 70 20 2d 64 63 20 7c 20 2f 62 69 6e 2f 74 61 >ip -dc | /bin/ta< > 000200 72 20 2d 78 70 47 66 20 2d 20 2e 2e 2e 20 0a 0c >r -xpGf - ... ..< > 000210 0a 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................< > 000220 > root@amanda2:/var/amanda/vtapes/slot1# > > And similarly for 3.3.9-5: > > root@hawk:/crc/backs/myob/amanda/DailySet1/slot1# od -N 0x270 -A x -t x1z -v > 00001.hawk.localdomain._home_charles_projects.1 > 000000 41 4d 41 4e 44 41 3a 20 53 50 4c 49 54 5f 46 49 >AMANDA: SPLIT_FI< > 000010 4c 45 20 32 30 31 39 30 34 31 32 30 30 30 31 30 >LE 2019041200010< > 000020 31 20 68 61 77 6b 2e 6c 6f 63 61 6c 64 6f 6d 61 >1 hawk.localdoma< > > ... > > 0001b0 3e 0a 20 20 3c 64 61 74 61 70 61 74 68 3e 41 4d >>. <datapath>AM< > 0001c0 41 4e 44 41 3c 2f 64 61 74 61 70 61 74 68 3e 0a >ANDA</datapath>.< > 0001d0 3c 2f 64 6c 65 3e 0a 45 4e 44 44 4c 45 0a 54 6f ></dle>.ENDDLE.To< > 0001e0 20 72 65 73 74 6f 72 65 2c 20 70 6f 73 69 74 69 > restore, positi< > 0001f0 6f 6e 20 74 61 70 65 20 61 74 20 73 74 61 72 74 >on tape at start< > 000200 20 6f 66 20 66 69 6c 65 20 61 6e 64 20 72 75 6e > of file and run< > 000210 3a 0a 09 64 64 20 69 66 3d 3c 74 61 70 65 3e 20 >:..dd if=<tape> < > 000220 62 73 3d 33 32 6b 20 73 6b 69 70 3d 31 20 7c 20 >bs=32k skip=1 | < > 000230 2f 62 69 6e 2f 67 7a 69 70 20 2d 64 20 7c 20 2f >/bin/gzip -d | /< > 000240 62 69 6e 2f 74 61 72 20 2d 78 70 47 66 20 2d 20 >bin/tar -xpGf - < > 000250 2e 2e 2e 20 0a 0c 0a 00 00 00 00 00 00 00 00 00 >... ............< > 000260 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >................< > 000270 > root@hawk:/crc/backs/myob/amanda/DailySet1/slot1# > > It makes sense that the restore instruction is absent from that first > file. It is a "header", and so there is nothing in it to restore. > > I did not test the instructions. > > -- > "When we talk of civilization, we are too apt to limit the meaning of > the word to its mere embellishments, such as arts and sciences; but > the true distinction between it and barbarism is, that the one > presents a state of society under the protection of just and > well-administered law, and the other is left to the chance government > of brute force." > - The Rev. James White, Eighteen Christian Centuries, 1889 > Key fingerprint = CE5C 6645 A45A 64E4 94C0 809C FFF6 4C48 4ECD DFDB > https://urldefense.proofpoint.com/v2/url?u=https-3A__charlescurley.com&d=DwICAg&c=gRgGjJ3BkIsb5y6s49QqsA&r=HMrKaRiCv4jddln9fLPIOw&m=w9v7Wjv3wQjJ4GpWqdb4Qqu5DxI5vH2YtvAMIwGulZA&s=hkDMK8hUtMGcHbcuQ5buEJjOQ-KVt7sn0vIvn0HywXg&e= >
