1*6aeb1f0cSDavid du Colombier.bp 2*6aeb1f0cSDavid du Colombier.SH 3*6aeb1f0cSDavid du ColombierAppendix: 4*6aeb1f0cSDavid du ColombierMaximum File Sizes in the 64-bit File Server 5*6aeb1f0cSDavid du Colombier.PP 6*6aeb1f0cSDavid du ColombierThe maximum size of a single file in a Plan 9 file server's 7*6aeb1f0cSDavid du Colombierfile system with 64-bit block numbers 8*6aeb1f0cSDavid du Colombieris determined by the file system block size 9*6aeb1f0cSDavid du Colombier(there are single, double, triple and quadruple indirect blocks). 10*6aeb1f0cSDavid du ColombierThe maximum size is thus 11*6aeb1f0cSDavid du Colombier$d ( 6 + x + x sup 2 + x sup 3 + x sup 4 )$ 12*6aeb1f0cSDavid du Colombierbytes, where 13*6aeb1f0cSDavid du Colombier$d = blocksize - ( 2 + 2 + 8 )$ 14*6aeb1f0cSDavid du Colombierand 15*6aeb1f0cSDavid du Colombier$x = left floor d over 8 right floor$, 16*6aeb1f0cSDavid du Colombier8 being the size in bytes of a 17*6aeb1f0cSDavid du Colombier.I "long long" 18*6aeb1f0cSDavid du Colombierblock number. 19*6aeb1f0cSDavid du Colombier.LP 20*6aeb1f0cSDavid du ColombierNote that 21*6aeb1f0cSDavid du Colombier$2 sup 63 ~ = ~ 9,223,372,036,854,775,808 ~ = ~ 8$ 22*6aeb1f0cSDavid du ColombierEB (binary exabytes). 23*6aeb1f0cSDavid du Colombier.LP 24*6aeb1f0cSDavid du Colombier.KS 25*6aeb1f0cSDavid du Colombier.TS 26*6aeb1f0cSDavid du Colombiercenter ; 27*6aeb1f0cSDavid du Colombierc s s 28*6aeb1f0cSDavid du Colombierc c c 29*6aeb1f0cSDavid du Colombiern n n . 30*6aeb1f0cSDavid du ColombierMaximum File Sizes 31*6aeb1f0cSDavid du Colombierblocksize max. file size in bytes 32*6aeb1f0cSDavid du Colombier_ 33*6aeb1f0cSDavid du Colombier1k 239.455G 257,112,525,120 34*6aeb1f0cSDavid du Colombier2k 7.73795T 8,507,967,771,456 35*6aeb1f0cSDavid du Colombier3k 59.4174T 65,330,091,351,360 36*6aeb1f0cSDavid du Colombier4k 251.779T 276,833,619,879,744 37*6aeb1f0cSDavid du Colombier5k 770.93T 847,646,649,807,168 38*6aeb1f0cSDavid du Colombier6k 1.87752P 2,113,900,586,253,120 39*6aeb1f0cSDavid du Colombier7k 4.0645P 4,576,215,491,839,296 40*6aeb1f0cSDavid du Colombier8k 7.93382P 8,932,685,435,522,880 41*6aeb1f0cSDavid du Colombier_ 42*6aeb1f0cSDavid du Colombier9k 14.3102P 16,111,863,841,429,824 43*6aeb1f0cSDavid du Colombier10k 24.2524P 27,305,748,837,688,128 44*6aeb1f0cSDavid du Colombier11k 39.0823P 44,002,768,605,261,120 45*6aeb1f0cSDavid du Colombier12k 60.4146P 68,020,766,726,780,736 46*6aeb1f0cSDavid du Colombier13k 90.1856P 101,539,987,535,380,800 47*6aeb1f0cSDavid du Colombier14k 130.683P 147,136,061,463,530,304 48*6aeb1f0cSDavid du Colombier15k 184.575P 207,812,990,391,866,688 49*6aeb1f0cSDavid du Colombier16k 254.939P 287,036,132,998,029,120 50*6aeb1f0cSDavid du Colombier_ 51*6aeb1f0cSDavid du Colombier17k 345.293P 388,765,190,105,491,776 52*6aeb1f0cSDavid du Colombier18k 459.621P 517,487,190,032,397,120 53*6aeb1f0cSDavid du Colombier19k 602.407P 678,249,473,940,389,184 54*6aeb1f0cSDavid du Colombier20k 778.66P 876,692,681,183,446,848 55*6aeb1f0cSDavid du Colombier21k 993.946P 1,119,083,734,656,717,120 56*6aeb1f0cSDavid du Colombier22k 1.22502E 1,412,348,826,145,348,416 57*6aeb1f0cSDavid du Colombier23k 1.53012E 1,764,106,401,673,323,840 58*6aeb1f0cSDavid du Colombier24k 1.89319E 2,182,700,146,852,294,464 59*6aeb1f0cSDavid du Colombier25k 2.32213E 2,677,231,972,230,412,608 60*6aeb1f0cSDavid du Colombier26k 2.82551E 3,257,594,998,641,165,120 61*6aeb1f0cSDavid du Colombier27k 3.41264E 3,934,506,542,552,206,656 62*6aeb1f0cSDavid du Colombier28k 4.09355E 4,719,541,101,414,192,960 63*6aeb1f0cSDavid du Colombier29k 4.87905E 5,625,163,339,009,614,144 64*6aeb1f0cSDavid du Colombier30k 5.78076E 6,664,761,070,801,627,968 65*6aeb1f0cSDavid du Colombier31k 6.81111E 7,852,678,249,282,893,120 66*6aeb1f0cSDavid du Colombier32k 7.98341E 9,204,247,949,324,402,496 67*6aeb1f0cSDavid du Colombier_ 68*6aeb1f0cSDavid du Colombier33k 9.31184E 10,735,825,353,524,316,480 69*6aeb1f0cSDavid du Colombier\&... 70*6aeb1f0cSDavid du Colombier48k 60.666E 69,943,138,363,646,533,440 71*6aeb1f0cSDavid du Colombier\&... 72*6aeb1f0cSDavid du Colombier56k 131.149E 151,204,569,706,075,533,120 73*6aeb1f0cSDavid du Colombier\&... 74*6aeb1f0cSDavid du Colombier64k 255.734E 294,841,790,119,418,167,104 75*6aeb1f0cSDavid du Colombier.TE 76*6aeb1f0cSDavid du Colombier.KE 77