check_int enables the integrity checker module, which examines all
block write requests to ensure on-disk consistency, at a large
- memory and CPU cost.
+ memory and CPU cost.
check_int_data includes extent data in the integrity checks, and
implies the check_int option.
Disable/enable debugging option to be more verbose in some ENOSPC conditions.
fatal_errors=<action>
- Action to take when encountering a fatal error:
+ Action to take when encountering a fatal error:
"bug" - BUG() on a fatal error. This is the default.
"panic" - panic() on a fatal error.
max_inline=<bytes>
Specify the maximum amount of space, in bytes, that can be inlined in
- a metadata B-tree leaf. The value is specified in bytes, optionally
+ a metadata B-tree leaf. The value is specified in bytes, optionally
with a K, M, or G suffix, case insensitive. In practice, this value
is limited by the root sector size, with some space unavailable due
- to leaf headers. For a 4k sectorsize, max inline data is ~3900 bytes.
+ to leaf headers. For a 4k sector size, max inline data is ~3900 bytes.
metadata_ratio=<value>
Specify that 1 metadata chunk should be allocated after every <value>
recovery
Enable autorecovery attempts if a bad tree root is found at mount time.
- Currently this scans a list of several previous tree roots and tries to
+ Currently this scans a list of several previous tree roots and tries to
use the first readable.
rescan_uuid_tree
ssd_spread
Options to control ssd allocation schemes. By default, BTRFS will
enable or disable ssd allocation heuristics depending on whether a
- rotational or nonrotational disk is in use. The ssd and nossd options
+ rotational or non-rotational disk is in use. The ssd and nossd options
can override this autodetection.
The ssd_spread mount option attempts to allocate into big chunks
This allows mounting of subvolumes which are not in the root of the mounted
filesystem.
You can use "btrfs subvolume show " to see the object ID for a subvolume.
-
+
thread_pool=<number>
The number of worker threads to allocate. The default number is equal
to the number of CPUs + 2, or 8, whichever is smaller.
user_subvol_rm_allowed
- Allow subvolumes to be deleted by a non-root user. Use with caution.
+ Allow subvolumes to be deleted by a non-root user. Use with caution.
MAILING LIST
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