MKFS.EROFS(1) General Commands Manual MKFS.EROFS(1) (NAME) mkfs.erofs - EROFS (SYNOPSIS) mkfs.erofs [] (DESCRIPTION) EROFS ( buffer head ) (LiveCD) . (Embedded) (Page cache thrashing) . mkfs.erofs EROFS : o o ( ) o S3 o OCI o EROFS ( REBUILD MODE ) (OPTIONS) -b block-size . . . -C max-pcluster-size . pcluster ( 5.13+). -m #[:compression-algorithm] #- metabox ( 6.17+) ( ). --MZ[=<0|[id]>] ('i') / ('d') . I/O . -x # (xattrs) . 2 . -z compression-algorithm[,#][:...] . (:) . mkfs.erofs : mkfs.erofs --help --zD[=<0|1>] : 0= 1=. . -d # () . 2 . xattr . -E [^]extended-option[,...] . ('=') . / ('^') . : 48bit ( Zstandard) ( 6.15+). all-fragments pcluster ( 6.1+). dedupe (Deduplication) . -E fragments ( 6.1+). dot-omitted "." () ( 6.15+). 48bit . force-inode-compact ( ) . force-inode-extended ( ) . force-inode-blockmap . force-chunk-indexes ( ) . [^]fragdedupe[=] (Fragments) . -E(all)-fragments . ('^') . inode . . full . fragments[=size] (pcluster) pcluster ( 6.1+). ^inline_data . FSDAX ( 5.15+) . legacy-compress ( ) << >> . nosbcrc . plain-xattr-prefixes . xattr metabox_inode ( metabox) packed_inode ( fragments) . . xattr-name-filter ( 6.6+). ztailpacking (pcluster) I/O ( 5.17+). -L volume-label (Volume Label) volume-label . . -T # (Timestamp) (Reproducible Builds) . --mkfs-time --all-time : . -U UUID (UUID) UUID . UUID : "c1b9d5a2-f162-11cf-9ece-0020afc76f16". UUID : clear UUID random UUID --all-root root . --all-time ( -T ) . . --async-queue-limit=# . --aufs aufs overlayfs . --blobdev file (Blob Device) . --chunksize # #- . --clean=MODE MODE data rvsp 0 . --clean --clean=data . data: EROFS . . rvsp: . . (Sparse) . 0: . MODE : data . rvsp 0 . (--tar) data rvsp . 0 . rvsp --tar=i --tar=headerball . (Rebuild mode) data rvsp . S3 (--s3) data 0 . OCI (--oci) data . --compress-hints=file . file . algorithm-index : [algorithm-index] match-pattern . --dsunit=# # . --dsunit --chunksize --dsunit --chunksize --dsunit . --dsunit : -b 4096 --dsunit 512 (2MiB) --chunksize 4096 (Deduplicate) . --dsunit --chunksize : : -b 4096, --dsunit 512 (2MiB), --chunksize $((4096*512)) --exclude-path=path . --exclude-path . --exclude-regex=regex . --exclude-regex . --file-contexts=file SELinux file selinux_file(5) . --force-uid=UID (UID) UID . --force-gid=GID (GID) GID . --fsalignblks=# ( ) . --gid-offset=GIDOFFSET GIDOFFSET GID . --force-gid gid GID + GIDOFFSET . --gzinfo[=file] ( --tar ) zinfo AWS SOCI gzip . gzip . --hard-dereference (Hardlinks) . --ignore-mtime mkfs.erofs . . -E force-inode-compact . --incremental=MODE DESTINATION EROFS SOURCE . MODE --clean . --s3 --oci . --incremental --incremental=data . MODE : data . rvsp 0 . (--tar) data rvsp . 0 . rvsp --tar=i --tar=headerball . (Rebuild mode) rvsp . --max-extent-bytes=# . . --mkfs-time ( -T ) . --mount-point=path (: /). --oci[=] (f) (i) OCI . : platform=platform (: linux/amd64). layer=# ( ). blob=digest (Blob digest) ( ). username=username (). password=password (). insecure HTTP HTTPS (). --offset=# # . --ovlfs-strip[=<0|1>] overlayfs ( whiteouts) . --preserve-mtime . --ignore-mtime . --quiet ( ). --root-xattr-isize=# xattr # . --s3=endpoint S3 . : passwd_file=file S3FS "accessKey:secretKey" . urlstyle=style API S3 ( vhost path) (: vhost). sig=version API S3 ( 2 4) (: 2). region=code (Region) ( sig=4 ). --sort=MODE . MODE none path . none: `-E^inline_data` . path: (). --tar, --tar=MODE <> . MODE f i headerball . f: EROFS (). i: EROFS . dentries xattrs . overlay . headerball: EROFS . --uid-offset=UIDOFFSET UIDOFFSET UID . --force-uid uid UID + UIDOFFSET . --ungzip[=file] gzip . . --unxz[=file] xz lzma lzip . . --vmdk-desc=FILE VMDK . --workers=# (Worker threads) # (: ). --xattr-inode-digest=name (xattr) . --xattr-prefix=PREFIX "trusted.overlay.". --xattr-prefix ( 6.4+). --zfeature-bits=# # . : 7 6 5 4 3 2 1 0 (bit position) | | | | | | | | | | | | | | | +-- Bit 0 (1) : legacy-compress | | | | | | +---- Bit 1 (2) : ztailpacking | | | | | +------ Bit 2 (4) : fragments | | | | +-------- Bit 3 (8) : all-fragments | | | +---------- Bit 4 (16) : dedupe | | +------------ Bit 5 (32) : fragdedupe | +-------------- Bit 6 (64) : 48bit +---------------- Bit 7 (128) : dot-omitted --zfeature-bits=6 ( : 0000 0110) ztailpacking ( ) fragments ( ) . -h, --help . -V, --version . (NOTES) (REBUILD MODE) mkfs.erofs EROFS EROFS . EROFS . EROFS mkfs.erofs . --clean --incremental : ( / blob index) ( dentries xattrs) . . . (data mode) --clean=data: EROFS . (rvsp mode) --clean=rvsp --incremental=rvsp: (Sparse) . (AUTHORS) mkfs.erofs Li Guifu Miao Xie Gao Xiang . Gao Xiang . (AVAILABILITY) mkfs.erofs erofs-utils git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs-utils.git . (SEE ALSO) mkfs(8). MKFS.EROFS(1)