Lines Matching +full:cache +full:- +full:block +full:- +full:size
6 doesn't cache reads because reads are supposed to be cached in page cache
14 1. type of the cache device - "p" or "s"
15 - p - persistent memory
16 - s - SSD
18 3. the cache device
19 4. block size (4096 is recommended; the maximum block size is the page
20 size)
24 offset from the start of cache device in 512-byte sectors
44 applicable only to persistent memory - use the FUA flag
48 applicable only to persistent memory - don't use the FUA
52 - some underlying devices perform better with fua, some
56 arguments or by a message), the cache will not promote
63 dm-writecache target and replace it with dm-linear or
66 specifies the maximum age of a block in milliseconds. If
67 a block is stored in the cache for too long, it will be
70 only metadata is promoted to the cache. This option
77 1. error indicator - 0 if there was no error, otherwise error number
82 6. the number of read requests that hit the cache
84 8. the number of write requests that hit uncommitted block
85 9. the number of write requests that hit committed block
86 10. the number of write requests that bypass the cache
87 11. the number of write requests that are allocated in the cache
94 Flush the cache device. The message returns successfully
95 if the cache device was flushed without an error
97 Flush the cache device on next suspend. Use this message
98 when you are going to remove the cache device. The proper
99 sequence for removing the cache device is:
108 6. the cache device is now inactive and it can be deleted