File SystemMax FS SizeMax File Sizeblock addressing bits Ext3 16TB 2TB 32 Ext4 1EB 16TB 48Tips:1 EB = 1024 * 1024 TB block size: 4 bytes拓展子目录数量(Sub directory scalability )在一个目录中,Ext3 支持 32000 个子目录 Ext4 支持 64000 个子目录...
又因为 i_size 字段的最高位有使用，因此，文件的最大长度限制为 2GB。i_dir_acl 字段（普通文件没...
我们首先需要理解 ext3 和 ext4 文件系统的磁盘布局，对于该功能的实现来说，这两个文件系统在磁盘上的...
__le32 s_log_block_size; /* Block size ,Block size is 2 ^ (10 + s_log_block_size). */ __le32 s_log_cluster_size; /* Allocation cluster size 如果启用了bigalloc,则集群大小为(2^s_log_Cluster_size)块。否则,s_log_cluster_size必须等于s_log_block_size */ /*20*/ __le32 s_b...
在linux内核EXT4的代码中，已经设置了block size的最大和最小值 define EXT4_MIN_BLOCK_SIZE1024 defineEXT4_MAX_BLOCK_SIZE65536 if (blocksize < EXT4_MIN_BLOCK_SIZE || blocksize > EXT4_MAX_BLOCK_SIZE) { ext4_msg(sb, KERN_ERR,"Unsupported filesystem blocksize %d", blocksize);goto ...
1.With gparted remove the fat32 partition (select the partition and delete it) and create a new with fat32 filesystem with max size (New->Partition). After created format the partition to one of type ext4 (select the partition and choose format to... -> fat32) 2. Run my code 3. ...
(EXT4_MAX_BLOCK_LOG_SIZE - EXT4_MIN_BLOCK_LOG_SIZE)) { ext4_msg(sb, KERN_ERR, "Invalid log block size: %u", le32_to_cpu(es->s_log_block_size)); goto failed_mount; } if (le32_to_cpu(es->s_log_cluster_size) > (EXT4_MAX_CLUSTER_LOG_SIZE - EXT4_MIN_BLOCK_LOG_SIZE)) ...
mkfs.ext4: 8192-byte blocks too big for system (max 4096) Proceed anyway? (y,n) y Warning: 8192-byte blocks too big for system (max 4096), forced to continue Filesystem label= OS type: Linux Block size=8192 (log=3) Fragment size=8192 (log=3) ...
System ID Format lvm2 Metadata Areas1Metadata Sequence No3VG Access read/write VG Status resizable MAX LV0Cur LV2Open LV2Max PV0Cur PV1Act PV1VG Size7.51GiB PE Size4.00MiB Total PE1922Alloc PE/ Size1912/7.47GiB Free PE/ Size10/40.00MiB ...
{ blocksize = 4096 inode_size = 128 } [root@node21 ~] [root@node21 ~] df -h Filesystem Size Used Avail Use% Mounted on /dev/sda3 259G 29G 217G 12% / tmpfs 16G 0 16G 0% /dev/shm /dev/sda1 194M 34M 151M 19% /boot /dev/sdf1 39T 21T 18T 54% /mnt/source /dev/...