How To Reduce Or Shrink The Size Of LVM Partition?

⟩ How to reduce or shrink the size of LVM partition?

The logical Steps to reduce size of LVM partition :

☛ Umount the filesystem using umount command,

☛ use resize2fs command , e.g resiz2fs /dev/mapper/myvg-mylv 10G

☛ Now use the lvreduce command , e.g lvreduce -L 10G /dev/mapper/myvg-mylv

Above Command will shrink the size & will make the filesystem size 10GB.

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By this program the soket "san_sock" will create #include<stdio.h> #include<sys/types.h> #include<sys/un.h> #include<sys/socket.h> int main() { struct sockaddr_un add_server; int fd_server; fd_server = socket(AF_UNIX,SOCK_STREAM,0); if(fd_server == -1) perror("socket"); add_server.sun_family = AF_UNIX; strcpy(add_server.sun_path,"san_sock"); if( bind(fd_server,(struct sockaddr*)&add_server,sizeof(add_server)) != 0) perror("bind"); return 0; } a) in the /tmp directory b) in the /usr directory c) in the present working directory d) none of the mentioned

What is the length of of the queue for pending connections in this program? #include<stdio.h> #include<sys/types.h> #include<sys/un.h> #include<sys/socket.h> int main() { struct sockaddr_un add_server; int fd_server; fd_server = socket(AF_UNIX,SOCK_STREAM,0); if(fd_server == -1) perror("socket"); add_server.sun_family = AF_UNIX; strcpy(add_server.sun_path,"server_sock2"); if( bind(fd_server,(struct sockaddr*)&add_server,sizeof(add_server)) != 0) perror("bind"); if( listen(fd_server,3) != 0) perror("listen"); return 0; } a) 0 b) 1 c) 2 d) 3

What is the output of the program no 13? #include<stdio.h> #include<sys/types.h> #include<sys/un.h> #include<sys/socket.h> int main() { struct sockaddr_un add_server, add_client; int fd_server, fd_client; int len; char ch; fd_server = socket(AF_UNIX,SOCK_STREAM,0); if(fd_server == -1) perror("socket"); add_server.sun_family = AF_UNIX; strcpy(add_server.sun_path,"san_sock"); if( bind(fd_server,(struct sockaddr*)&add_server,sizeof(add_server)) != 0) perror("bind"); if( listen(fd_server,3) != 0) perror("listen"); len = sizeof(add_client); fd_client = accept(fd_server,(struct sockaddr*)&add_client,&len); printf("googlen"); return 0; } a) the program will print the string "google" b) the process will remain block c) segmentation fault d) none of the mentioned

What is the output of this program? #include<stdio.h> #include<sys/types.h> #include<sys/socket.h> int main() { int fd; fd = socket(AF_UNIX,SOCK_STREAM,0); printf("%dn",fd); return 0; } a) 0 b) 1 c) 2 d) 3

What is the output of this program no 14? #include<stdio.h> #include<sys/types.h> #include<sys/un.h> #include<sys/socket.h> #include<errno.h> int main() { struct sockaddr_un addr; int fd; fd = socket(AF_UNIX,SOCK_STREAM,0); if (fd == -1) perror("socket"); addr.sun_family = AF_UNIX; strcpy(addr.sun_path,"san_sock"); if (bind(4,(struct sockaddr*)&addr,sizeof(addr)) == -1) printf("Sanfoudnryn"); return 0; } a) this program will print the string "google" b) this program will not print the string "google" c) segmentation fault d) none of the mentioned

What this program is not able to connect with any client program? #include<stdio.h> #include<sys/types.h> #include<sys/un.h> #include<sys/socket.h> int main() { struct sockaddr_un add_server, add_client; int fd_server, fd_client; int len; char ch; fd_server = socket(AF_UNIX,SOCK_STREAM,0); if(fd_server == -1) perror("socket"); add_server.sun_family = AF_UNIX; strcpy(add_server.sun_path,"san_sock"); if( bind(fd_server,(struct sockaddr*)&add_server,sizeof(add_server)) != 0) perror("bind"); len = sizeof(add_client); fd_client = accept(fd_server,(struct sockaddr*)&add_client,&len); printf("googlen"); return 0; } a) the listen() is missing b) the connect() is missing c) the read() and write() are missing d) none of the mentioned

What is the output of this program no 15? #include<stdio.h> #include<sys/types.h> #include<sys/un.h> #include<sys/socket.h> int main() { struct sockaddr_un add_server, add_client; int fd_server, fd_client; int len; char ch; fd_server = socket(AF_UNIX,SOCK_STREAM,0); if(fd_server == -1) perror("socket"); add_server.sun_family = AF_UNIX; strcpy(add_server.sun_path,"san_sock"); if( bind(fd_server,(struct sockaddr*)&add_server,sizeof(add_server)) != 0) perror("bind"); len = sizeof(add_client); fd_client = connect(fd_server,(struct sockaddr*)&add_client,&len); printf("googlen"); return 0; } a) this program will print the string "google" b) segmentation fault c) error d) none of the mentioned

What is the output of this program no 16? #include<stdio.h> #include<sys/types.h> #include<netinet/in.h> #include<sys/socket.h> #include<errno.h> int main() { struct sockaddr_in addr; int fd; fd = socket(AF_UNIX,SOCK_STREAM,0); if (fd == -1) perror("socket"); addr.sun_family = AF_UNIX; strcpy(addr.sun_path,"san_sock"); if (bind(4,(struct sockaddr*)&addr,sizeof(addr)) == -1) printf("Sanfoudnryn"); return 0; } a) error b) "google" c) segmentation fault d) none of the mentioned

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