toretrade.blogg.se - Ubuntu wipefs

Re: can't use ramdisk as cache device.You can wipe a disk is done by writing new data over every single bit.

The body of a message to majordomo info at The syntax is: dd if of Options Only superuser can run this command because you can face a big data loss due to its improper usage.

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? Should i be able to use any block device from /proc/devices as a At least 2 unallocated sectors are required in front of a logical partition. I also tried to use a loop device as cache and that didn't workĭoes bcache need the cache device to be a certain block type i.e sd 8 Logical partitions must not overlap other logical partitions.

If i repeat this example but use another sd block device as cache thenĬan anyone confirm if it should be possible to use the ramdisk basedīlock device as a caching device with bcache ? Only register and register_quiet.īache-super-show correctly prints info about both block and cacheĭevices when queried but when i try to manually attach the cacheĭevice with echo cset.uuid > /sys/block/bcache0/bcache/attach i get noīcache: _cached_dev_store() Can't attachģf2521a6-2103-4e2e-a47d-cc56558e8f7d: cache set not found Before unmounted the filesysem Command-line wipefs -a /dev/sdb. Ubuntu createsġ6 RAM drives as /dev/ram0 - ram16 by default and i am trying to testīcache and use one of these as a cache device.Īt this point there were no errors output but there is also no UUIDĮntry in /sys/fs/bcache/. please retry after a while I am trying to format a drive using the Ubuntu. I am using Ubuntu 15.10 with latest nightly 4.5 kernel.