3 bcacheadm \- manage bcache devices
15 Format one or a list of devices with bcache data structures. You need to do this before you create a volume.
20 Register a list of devices.
25 List cachesets on this system. This just searches /sys/fs/bcache.
30 Gives info about the superblock for a list of devices.
35 Finds the status of the most up to date superblock in each tier. Pass in a list of devices.
40 List bcache specific statistics. Use --list to find out exactly what these are. To list stats for a cacheset, just give the cacheset uuid. To target a cache within the cacheset, use the -c option. To get time interval stats, use the hour, day, etc, options.
45 Return UUID if device identified as bcache-formatted.
47 Only necessary until support for the bcache superblock is included
48 in blkid; in the meantime, provides just enough functionality for a udev script
49 to create the /dev/disk/by-uuid symlink.
54 List the bcacheadm commands
58 .SH Options for bcacheadm
63 .SH Options for format
69 Create a backing device
71 .BR \-b\ --bucket-size=
72 Specifies the bucket size.
78 block size (hard sector size of SSD, often 2k
81 tier of subsequent devices
83 .BR \--cache-replacement-policy=
84 one of lru, fifo, or random
86 .BR \-o,\ --data_offset=
87 data offset in sectors
90 Create a cache device with the specified UUID
93 One of none, csc32c, or csc64
96 Number of metadata replicas
99 Number of data replicas
102 Destroy existing bcache data if present
110 .SH Options for register
112 .SH Options for list-cachesets
115 Provide a directory other than /sys/fs/bcache
117 .SH Options for query-devs
119 .BR \-f,\ --force-csum
120 Enables bcacheadm to going even if the superblock crc is invalid
122 .SH Options for status
124 .SH Options for stats
127 List all stats and their values for the given device.
130 List the names of the different stats for the given device.
133 UUID for the cacheset
136 UUID for a device within the cacheset. Must pass in the cacheset UUID in order to search for a dev.
139 Cache number, starts from 0
141 .BR \--five-min-stats
142 stats accumulated in the last 5 minutes
145 stats accumulated in the last hour
148 stats accumulated in the last day
151 stats accumulated in total