Difference between revisions of "Block size"
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| − | + | [[wikipedia:Block (data storage)|Block size]] | |
| + | [[blockdev]] --getbsz /dev/sda11 | ||
| + | 4096 | ||
| + | blockdev --getsize64 '/dev/sda' | ||
| + | |||
| + | [[tune2fs]] -l /path/to/device | grep "[[Block]] size" | ||
| + | |||
| + | blockdev --rereadpt /dev/sdaaa | ||
| + | |||
| + | |||
| + | Windows: <code>fsutil fsinfo ntfsinfo [your drive]</code> | ||
| − | + | <pre> | |
| − | + | fsutil fsinfo ntfsinfo C: | |
| + | NTFS Volume Serial Number : 0x3a32d3ff32d3de55 | ||
| + | NTFS Version : 3.1 | ||
| + | LFS Version : 1.1 | ||
| + | Number Sectors : 0x000000004af04fff | ||
| + | Total Clusters : 0x00000000095e09ff | ||
| + | Free Clusters : 0x0000000008e1334d | ||
| + | Total Reserved : 0x0000000000001824 | ||
| + | Bytes Per Sector : 512 | ||
| + | Bytes Per Physical Sector : 512 | ||
| + | Bytes Per Cluster : 4096 | ||
| + | Bytes Per FileRecord Segment : 1024 | ||
| + | Clusters Per FileRecord Segment : 0 | ||
| + | Mft Valid Data Length : 0x000000000d8c0000 | ||
| + | Mft Start Lcn : 0x00000000000c0000 | ||
| + | Mft2 Start Lcn : 0x0000000000000002 | ||
| + | Mft Zone Start : 0x0000000000506840 | ||
| + | Mft Zone End : 0x0000000000513060 | ||
| + | Max Device Trim Extent Count : 0 | ||
| + | Max Device Trim Byte Count : 0x0 | ||
| + | Max Volume Trim Extent Count : 62 | ||
| + | Max Volume Trim Byte Count : 0x40000000 | ||
| + | Resource Manager Identifier : 9D21DA68-6D41-11EA-8D5C-B54A0A7FDTXT | ||
| + | </pre> | ||
| + | |||
| + | <code>Bytes Per Cluster</code> is the equivalent of the allocation unit. | ||
| + | |||
| + | == PostgreSQL == | ||
| + | * <code>[[show block_size]]</code> | ||
| + | * <code>[[select]] [[current_setting]]('block_size');</code> | ||
| − | + | == Related terms == | |
| + | * [[Reservation percentage]] | ||
| + | * [[Block]] | ||
== See also == | == See also == | ||
| + | * {{fdisk}} | ||
* {{files}} | * {{files}} | ||
* {{filesystems}} | * {{filesystems}} | ||
| + | * {{Block device hardware}} | ||
[[Category:Storage]] | [[Category:Storage]] | ||
Latest revision as of 22:51, 31 October 2021
blockdev --getbsz /dev/sda11 4096 blockdev --getsize64 '/dev/sda'
tune2fs -l /path/to/device | grep "Block size"
blockdev --rereadpt /dev/sdaaa
Windows: fsutil fsinfo ntfsinfo [your drive]
fsutil fsinfo ntfsinfo C: NTFS Volume Serial Number : 0x3a32d3ff32d3de55 NTFS Version : 3.1 LFS Version : 1.1 Number Sectors : 0x000000004af04fff Total Clusters : 0x00000000095e09ff Free Clusters : 0x0000000008e1334d Total Reserved : 0x0000000000001824 Bytes Per Sector : 512 Bytes Per Physical Sector : 512 Bytes Per Cluster : 4096 Bytes Per FileRecord Segment : 1024 Clusters Per FileRecord Segment : 0 Mft Valid Data Length : 0x000000000d8c0000 Mft Start Lcn : 0x00000000000c0000 Mft2 Start Lcn : 0x0000000000000002 Mft Zone Start : 0x0000000000506840 Mft Zone End : 0x0000000000513060 Max Device Trim Extent Count : 0 Max Device Trim Byte Count : 0x0 Max Volume Trim Extent Count : 62 Max Volume Trim Byte Count : 0x40000000 Resource Manager Identifier : 9D21DA68-6D41-11EA-8D5C-B54A0A7FDTXT
Bytes Per Cluster is the equivalent of the allocation unit.
PostgreSQL[edit]
show block_sizeselect current_setting('block_size');
Related terms[edit]
See also[edit]
- Block devices, partition, GUID Partition Table (GPT),
fdisk,parted,Kpartx, partition,/proc/partitions,blockdev, mkfs, partprobe,diskpart (Windows),fdisk -l /dev/nbd0 - file, File system, directory,
touch,mkdir,ls,lntruncate,fallocate,split,stat, inode, File descriptor, superblock, block size (blockdev),fuser,lsof,scrub,chattr, ulimit (nofiles),cp,mv,file (command),mkfifo,chmod - File systems: clustered file system,
tune2fsmkfs.ext4,superblock, e2fsck,resize2fs,mount,df,umount, UUID,fstab - Block devices: HDD, SSD, Intel Optane, block size
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