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93 lines
2.9 KiB
93 lines
2.9 KiB
#include <windows.h>
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#include <stdio.h>
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#include <ftapi.h>
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void __cdecl
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main(
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int argc,
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char** argv
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)
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{
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FT_LOGICAL_DISK_ID diskId[2], newDiskId;
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ULONG weight1, weight2;
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FT_REDISTRIBUTION_CONFIGURATION_INFORMATION configInfo;
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BOOL b;
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LONGLONG volsize1, volsize2, newSize, rowSize, numRows, tmp;
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INT d;
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CHAR c;
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if (argc != 5) {
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printf("usage: %s <diskId1> <diskId2> <width1> <width2>\n", argv[0]);
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return;
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}
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sscanf(argv[1], "%I64X", &diskId[0]);
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sscanf(argv[2], "%I64X", &diskId[1]);
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sscanf(argv[3], "%d", &weight1);
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sscanf(argv[4], "%d", &weight2);
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if (weight1 >= 0x10000 || weight2 >= 0x10000) {
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printf("Weight too large.\n");
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return;
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}
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printf("Redistributing data on disk %I64X with disk %I64X\n",
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diskId[0], diskId[1]);
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printf("Weightings are %d for first disk and %d for second disk.\n",
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weight1, weight2);
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configInfo.StripeSize = 0x10000;
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configInfo.FirstMemberWidth = (USHORT) weight1;
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configInfo.SecondMemberWidth = (USHORT) weight2;
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b = FtQueryLogicalDiskInformation(diskId[0], NULL, &volsize1,
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0, NULL, NULL, 0, NULL, 0, NULL);
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if (!b) {
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printf("Invalid disk id.\n");
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return;
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}
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b = FtQueryLogicalDiskInformation(diskId[1], NULL, &volsize2,
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0, NULL, NULL, 0, NULL, 0, NULL);
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if (!b) {
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printf("Invalid disk id.\n");
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return;
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}
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printf("Total disk size before redistribution = %I64d\n", volsize1);
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rowSize = configInfo.StripeSize*(configInfo.FirstMemberWidth +
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configInfo.SecondMemberWidth);
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numRows = volsize1/(configInfo.StripeSize*configInfo.FirstMemberWidth);
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tmp = volsize2/(configInfo.StripeSize*configInfo.SecondMemberWidth);
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if (tmp < numRows) {
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numRows = tmp;
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}
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newSize = numRows*rowSize;
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printf("Total disk size after redistribution = %I64d\n", newSize);
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printf("Disk space wasted by redistribution = %I64d\n",
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volsize1 + volsize2 - newSize);
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if (newSize < volsize1) {
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printf("New size less than existing size.\n");
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return;
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}
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printf("\nPress <CTRL-C> to cancel operation...");
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c = getchar();
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printf("\nCreating redistribution...\n");
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b = FtCreateLogicalDisk(FtRedistribution, 2, diskId,
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sizeof(configInfo), &configInfo, &newDiskId);
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if (b) {
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printf("Redistribution %I64X created.\n", newDiskId);
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} else {
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printf("Redistribution create failed with %d\n", GetLastError());
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}
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}
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