![]() The recommended size for the mixed mode is for filesystems less than 1GiB. The separate allocation of block groups leads to a situation where the space is reserved for the other block group type, is not available for allocation and can lead to ENOSPC state. This helps to utilize the free space regardless of the purpose and is suitable for small devices. The mixed mode will remove the isolation and store both types in the same block group type. Normally the data and metadata block groups are isolated. See Dup Profiles on a Single Device for more details. Use the options -data/ -metadata to avoid confusion. Note that the rotational status can be arbitrarily set by the underlying block device driver and may not reflect the true status (network block device, memory-backed SCSI devices etc). The detection is based on the value of /sys/block/DEV/queue/rotational, where DEV is the short name of the device. Valid values are raid0, raid1, raid5, raid6, raid10, single or dup, (case does not matter).Ī single device filesystem will default to DUP, unless a SSD is detected. Specify the profile for the metadata block groups. See Dup Profiles on a Single Device for more. Valid values are raid0, raid1, raid5, raid6, raid10 or single or dup (case does not matter). Specify the profile for the data block groups. If this option is not used, then mkfs.btrfs uses the entire device space for the filesystem. See section Multiple Devices for more details. Multiple devices are grouped by UUID of the filesystem.īefore mounting such filesystem, the kernel module must know all the devices either via preceding execution of btrfs device scan or using the device mount option. is typically a block device but can be a file-backed image as well. Mkfs.btrfs is used to create the btrfs filesystem on a single or multiple devices. Mkfs.btrfs - create a btrfs filesystem Synopsis
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |