📄 vol.1
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1080(data)S1273(and)S1443(use)S1602(a)S1672(block)S1920(size)S2102(appropriate)S2586(for)S2729(\256xed)S2955(or)S3064(variable)S3414(block)S3662(sized)S3894(tapes.)S3072 V10 B1080(Vol)S10 R1257(reads)S1496(or)S1606(writes)S(8192)200 1879 A2105(bytes)S2343(to)S2447(block)S2697(devices,)S3051(usually)S(\257oppies.)343 3368 A3763(Character)S4183(devices)S4512(are)S4663(read)S4864(or)S(written)286 4975 A3192 V1080(using)S1326(a)S(multiple)335 1400 A1763(of)S(512)150 1875 A2053(bytes.)S2343(This)S(multiple)335 2550 A2913(has)S3075(an)S(upper)229 3198 A3455(limit)S3673(of)S(32767)250 3785 A4063(bytes)S4303(\(16-bit)S4605(machine\),)S5033(64)S5161(kb)S3312 V1080(\(32-bit\),)S1440(or)S1551(even)S1768(1)S1845(Mb)S2011(\(32-bit)S2312(VM\).)S2585(The)S2769(last)S2936(partial)S3221(write)S3456(to)S3561(a)S3633(character)S4031(device)S4322(is)S4417(padded)S4735(with)S4942(zeros)S5183(to)S3432 V1080(the)S1237(block)S1494(size.)S1735(If)S1837(a)S1916(character)S2321(device)S2618(is)S2719(a)S2798(tape)S3000(device)S3297(that)S(responds)357 3482 A3873(to)S3985(the)S10 B4142(mtio)S10 R4338(\(4\))S4490(status)S4753(call)S4932(then)S5138(the)S3552 V1080(reported)S1446(tape)S1644(block)S1897(size)S(will)157 2084 A2272(be)S2398(used)S2613(as)S2728(the)S2882(smallest)S3243(unit.)S3480(If)S3579(the)S3733(tape)S3932(is)S4030(a)S4106(variable)S4462(block)S4716(length)S4998(device)S3672 V1080(then)S1278(it)S1359(is)S1451(read)S1650(or)S(written)286 1759 A2070(like)S2246(a)S2316(block)S2564(device,)S(8192)200 2877 A3102(bytes)S3339(at)S3437(the)S3585(time,)S3814(with)S4018(a)S4088(minimum)S4503(unit)S4684(of)S4793(one)S4963(byte.)S3840 V1080(All)S1234(sizes)S1455(may)S1653(be)S1773(suf\256xed)S2123(by)S2249(the)S2398(letters)S10 B2671(M)S10 R2766(,)S10 B2817(k)S10 R2873(,)S10 B2924(b)S10 R3006(or)S10 B3116(w)S10 R3215(to)S(multiply)340 3319 A3685(the)S3834(number)S4167(by)S4293(mega,)S4562(kilo,)S4769(block)S(\(512\),)243 5018 A3960 V1080(or)S1189(word)S1421(\(2\).)S1614(The)S1796(volume)S2122(size)S2304(by)S2429(default)S2734(in)S(kilobytes)368 2837 A3230(if)S3317(there)S3544(is)S3636(no)S3761(suf\256x.)S4128 V9 R720(O)S722(OP)S790(PT)S842(TI)S900(IO)S933(ON)S1001(NS)S1069(S)S4248 V10 B-11080(-)S10 B1137(rw)S10 R(Explicitly)397 1440 A1862(specify)S2178(reading)S2505(or)S(writing.)316 2614 A2980(Almost)S3301(mandatory)S3756(in)S3859(scripts.)S4416 V10 B-11080(-)S10 B1137(1)S10 R1440(Just)S1621(one)S1791(volume,)S2142(start)S2341(immediately.)S4584 V10 B-11080(-)S10 B1137(b)S10 I1218(blocksize)S4704 V10 R1440(Specify)S1773(the)S1921(device)S2209(block)S2457(size.)S4872 V10 B-11080(-)S10 B1137(m)S10 I(multiple)330 1246 A4992 V10 R1440(Specify)S1773(the)S1921(maximum)S2353(read)S2552(or)S2661(write)S2894(size)S3076(of)S(multiple)335 3186 A3547(blocks.)S3885(The)S10 B-14068(-)S10 B4125(b)S10 R4207(and)S10 B-14378(-)S10 B4435(m)S10 R4545(options)S4866(allow)S5116(one)S5112 V1440(to)S1552(modify)S1876(the)S2033(block)S2290(size)S2481(assumptions)S3011(that)S3196(are)S3354(made)S(above.)265 3606 A3930(These)S4205(assumptions)S4734(are)S10 B-14891(-)S10 B4948(b)S5037(1)S10 B-15120(-)S10 B5177(m)S5232 V(8192)200 1440 A10 R1673(for)S1824(block)S2080(devices)S2415(or)S2532(variable)S2890(length)S3174(tapes,)S3439(and)S10 B-13617(-)S10 B3674(b)S(512)150 3763 A10 B-13946(-)S10 B4003(m)S(65536)250 4120 A10 R4403(for)S4554(character)S4959(devices)S5352 V1440(\(32)S1621(bit)S1774(machine.\))S2245(These)S2532(options)S(will)157 2873 A3076(not)S3250(override)S3632(the)S3801(tape)S4015(block)S4284(size)S(found)234 4487 A4767(out)S4941(with)S5166(an)S5472 V10 B1440(mtio)S10 R1636(\(4\))S1796(call.)S2034(The)S(multiple)335 2233 A2610(may)S2825(be)S2962(larger)S3240(then)S3455(the)S3621(default)S3944(if)S10 B4049(vol)S10 R4220(can)S4403(allocate)S4760(the)S4926(memory)S5592 V1440(required.)S5760 V9 R720(E)S722(EX)S780(XA)S848(AM)S916(MP)S998(PL)S1050(LE)S1108(ES)S1166(S)S5880 V10 R1080(To)S1217(back)S1432(up)S1557(a)S1627(tree)S1804(to)S(\257oppies)318 1907 A2250(as)S2359(a)S2429(compressed)S2929(tar\256le:)S6048 V1440(tar)S1572(cf)S10 R-11676(-)S10 R1758(.)S1808(|)S1853(compress)S2258(|)S2303(vol)S2456(/dev/fd0)S6216 V1080(To)S1217(restore)S1517(a)S1587(tree)S1764(from)S(720)150 1985 A2160(kb)S2285(images)S2595(from)S2816(possibly)S3175(bigger)S(\257oppies:)346 3457 A6384 V1440(vol)S(720)150 1593 A1768(/dev/fd0)S2128(|)S2173(uncompress)S2678(|)S2723(tar)S2855(xfp)S10 R-13014(-)S6552 V10 R1080(Read)S1312(or)S1421(write)S1654(a)S1724(device)S2012(with)S(1024)200 2216 A2441(byte)S2639(blocks:)S6720 V1440(vol)S10 R-11593(-)S10 R1650(b)S1725(1k)S(/dev/rsd15)424 1850 A6888 V1080(Read)S1317(or)S1431(write)S1669(a)S1744(variable)S2099(block)S2352(length)S2633(tape)S2831(using)S3078(blocking)S3459(factor)S3726(20)S3857(as)S3972(used)S4187(by)S4318(default)S4629(by)S4760(many)S10 B5014(tar)S10 R5143(\(1\))S7008 V1080(commands:)S7176 V1440(vol)S10 R-11593(-)S10 R1650(m)S(20b)150 1753 A1928(/dev/rst5)S7344 V1080(Note)S1310(that)S10 B-11495(-)S10 B1552(m)S10 R1670(was)S1861(used)S2079(in)S2191(the)S2348(last)S2522(example.)S2947(It)S3043(sets)S3228(the)S3385(size)S3576(to)S3688(use)S3856(to)S3968(read)S4176(or)S4294(write,)S10 B-14562(-)S10 B4619(b)S10 R4710(sets)S4896(the)S5054(basic)S7464 V1080(block)S1328(size)S1510(that)S1686(may)S1884(be)S(written)286 2004 A2315(in)S(multiples.)399 2418 A7903 V720(Page)S941(1)S4455(September)S4911(13,)S(1996)200 5061 A8143 VEP%%Page: 2 2BP/slant 0 def/height 0 def480 V10 R720(VOL)S936(\()S978(1)S1036(\))S2696(Eighth)S(Edition)296 2989 A4911(VOL)S5127(\()S5169(1)S5227(\))S960 V9 R720(S)S722(SE)S774(EE)S832(E)S913(A)S915(AL)S983(LS)S1041(SO)S1093(O)S1080 V10 B1080(dd)S10 R1192(\(1\),)S10 B1360(tar)S10 R1489(\(1\),)S10 B1657(mt)S10 R1775(\(1\),)S10 B1943(mtio)S10 R2139(\(4\).)S7903 V720(September)S1176(13,)S(1996)200 1326 A4990(Page)S5211(2)S8143 VEP%%Trailer%%DocumentFonts: Times-Roman Times-Bold Times-Italic%%Pages: 2⌨️ 快捷键说明
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