Lines Matching full:group

3 Block Group Descriptors
6 Each block group on the filesystem has one of these descriptors
7 associated with it. As noted in the Layout section above, the group
8 descriptors (if present) are the second item in the block group. The
9 standard configuration is for each block group to contain a full copy of
10 the block group descriptor table unless the sparse\_super feature flag
13 Notice how the group descriptor records the location of both bitmaps and
15 group, the only data structures with fixed locations are the superblock
16 and the group descriptor table. The flex\_bg mechanism uses this
17 property to group several block groups into a flex group and lay out all
19 group of the flex group.
22 grouped together into a meta group. Note that in the meta\_bg case,
24 group contain only group descriptors for the groups inside the meta
25 group.
30 block group descriptor was only 32 bytes long and therefore ends at
32 block group descriptor expands to at least the 64 bytes described below;
35 If gdt\_csum is set and metadata\_csum is not set, the block group
36 checksum is the crc16 of the FS UUID, the group number, and the group
37 descriptor structure. If metadata\_csum is set, then the block group
38 checksum is the lower 16 bits of the checksum of the FS UUID, the group
39 number, and the group descriptor structure. Both block and inode bitmap
40 checksums are calculated against the FS UUID, the group number, and the
43 The block group descriptor is laid out in ``struct ext4_group_desc``.
80      - Block group flags. See the bgflags_ table below.
98        inode table for this group.
102      - Group descriptor checksum; crc16(sb\_uuid+group\_num+bg\_desc) if the
104        crc32c(sb\_uuid+group\_num+bg\_desc) & 0xFFFF if the
160 Block group flags can be any combination of the following: