common/rc: teach _scratch_mkfs_sized to set a size on an xfs realtime volume
[xfstests-dev.git] / README.device-mapper
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2 To use xfstests on device mapper always use the /dev/mapper/<name> symlinks,
3 not the /dev/dm-* devices, or the symlinks created by LVM.
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5 For example:
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7 TEST_DEV=/dev/mapper/test
8 SCRATCH_DEV=/dev/mapper/scratch