Lines Matching refs:devices
79 then the layouts for 2, 3 and 4 devices are:
93 for 2, 3 and 4 devices are:
106 layouts for 2, 3 and 4 devices are:
119 <#raid_devs>: The number of devices composing the array.
130 # RAID4 - 4 data drives, 1 parity (no metadata devices)
131 # No metadata devices specified to hold superblock/bitmap info
139 # RAID4 - 4 data drives, 1 parity (with metadata devices)
161 2: <raid_type> <#devices> <health_chars> \
167 Here we can see the RAID type is raid4, there are 5 devices - all of
216 When a block is discarded, some storage devices will return zeroes when
217 the block is read. These devices set the 'discard_zeroes_data'
218 attribute. Other devices will return random data. Confusingly, some
219 devices that advertise 'discard_zeroes_data' will not reliably return
221 from a number of devices to calculate parity blocks and (for performance
223 that the devices be consistent. Blocks may be discarded in the middle
230 Since the behavior of storage devices is unreliable in this respect,
235 Storage devices that properly support 'discard_zeroes_data' are
238 For trusted devices, the following dm-raid module parameter can be set
247 1.2.0 Handle creation of arrays that contain failed devices.
256 1.5.1 Add ability to restore transiently failed devices on resume.