= *(u64 *)(r10 -8) 7: (95) exit processed 8 insns (limit 131072), stack depth 8 Remove struct padding with aligning members by using #pragma pack. In modern compilers, data structures are aligned by memory efficiently. Structure members are aligned to memory address that mul�ples their size, and padding is added for the proper alignment. Because of this, the size of struct may o�en grow larger than | // |________________________| // | sector(4) | PADDING | <= address aligned to 8 // |____________|___________| with 4-byte PADDING. The BPF verifier in the kernel checks the stack boundary

*(u64 *)(r10 -8) 7: (95) exit processed 8 insns (limit 131072), stack depth 8 10. Remove struct padding with aligning members by using #pragma pack. In modern compilers, data structures are aligned by memory efficiently. Structure members are aligned to memory address that multiples their size, and padding is added for the proper alignment. Because of this, the size of struct may often grow larger than | // |________________________| // | sector(4) | PADDING | <= address aligned to 8 // |____________|___________| with 4-byte PADDING. The BPF verifier in the kernel checks the stack boundary

*(u64 *)(r10 -8) 7: (95) exit processed 8 insns (limit 131072), stack depth 8 10. Remove struct padding with aligning members by using #pragma pack. In modern compilers, data structures are aligned by memory efficiently. Structure members are aligned to memory address that multiples their size, and padding is added for the proper alignment. Because of this, the size of struct may often grow larger than | // |________________________| // | sector(4) | PADDING | <= address aligned to 8 // |____________|___________| with 4-byte PADDING. The BPF verifier in the kernel checks the stack boundary

set by open()). */ unsigned int cache_readdir : 1; /** Padding. Reserved for future use*/ unsigned int padding : 25; unsigned int padding2 : 32; /** File handle id. May be filled in by filesystem

*(u64 *)(r10 -8) 7: (95) exit processed 8 insns (limit 131072), stack depth 8 10. Remove struct padding with aligning members by using #pragma pack. In modern compilers, data structures are aligned by memory efficiently. Structure members are aligned to memory address that multiples their size, and padding is added for the proper alignment. Because of this, the size of struct may often grow larger than | // |________________________| // | sector(4) | PADDING | <= address aligned to 8 // |____________|___________| with 4-byte PADDING. The BPF verifier in the kernel checks the stack boundary

*(u64 *)(r10 -8) 7: (95) exit processed 8 insns (limit 131072), stack depth 8 10. Remove struct padding with aligning members by using #pragma pack. In modern compilers, data structures are aligned by memory efficiently. Structure members are aligned to memory address that multiples their size, and padding is added for the proper alignment. Because of this, the size of struct may often grow larger than | // |________________________| // | sector(4) | PADDING | <= address aligned to 8 // |____________|___________| with 4-byte PADDING. The BPF verifier in the kernel checks the stack boundary

*(u64 *)(r10 -8) 7: (95) exit processed 8 insns (limit 131072), stack depth 8 10. Remove struct padding with aligning members by using #pragma pack. In modern compilers, data structures are aligned by memory efficiently. Structure members are aligned to memory address that multiples their size, and padding is added for the proper alignment. Because of this, the size of struct may often grow larger than | // |________________________| // | sector(4) | PADDING | <= address aligned to 8 // |____________|___________| with 4-byte PADDING. The BPF verifier in the kernel checks the stack boundary

bool 损坏标记 sn uint64_t 快照版本号 bits uint32_t 位图的位数 bitmap char[] 位图 crc uint32_t 上述字段的crc 校验码 padding / 填0，以补足 4KBCHUNKSERVER端快照实现-写时复制原理  写时复制通常使用版本号实现  复制时仅复制元数据，并增加版本号  写入时，先复制要写入的数据块，然后再写入 bits uint32_t 可缺省，当前为CloneChunk时表示 bitmap的位数 bitmap char[] 可缺省，位图表 crc uint32_t 上述字段的crc校验码 padding / 填0，以补足4KB location定义为A@B的形式: • 如果源卷在s3上，则location格式为objectName@s3，例如: objectxxx@s3 • 如果源卷在curve内部，则location格式为

*(u64 *)(r10 -8) 7: (95) exit processed 8 insns (limit 131072), stack depth 8 10. Remove struct padding with aligning members by using #pragma pack. In modern compilers, data structures are aligned by memory efficiently. Structure members are aligned to memory address that multiples their size, and padding is added for the proper alignment. Because of this, the size of struct may often grow larger than | // |________________________| // | sector(4) | PADDING | <= address aligned to 8 // |____________|___________| with 4-byte PADDING. The BPF verifier in the kernel checks the stack boundary

that, when the pointer is used together with a basic data type that is less than 8 bytes, memory padding may occur, wasting memory space. As a result, the page table is refreshed frequently, memory access