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man lvmraid: remove fixmes, use consistent example name
This commit is contained in:
David Teigland
parent
716c345334
commit
fab088cbc7
136
man/lvmraid.7.in
136
man/lvmraid.7.in
@ -917,12 +917,12 @@ between striped and raid4.
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.nf
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Start with a linear LV:
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# lvcreate -L1G -n my_lv vg
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# lvcreate -L1G -n lv vg
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Convert the linear LV to raid1 with three images
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(original linear image plus 2 mirror images):
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# lvconvert --type raid1 --mirrors 2 vg/my_lv
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# lvconvert --type raid1 --mirrors 2 vg/lv
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.fi
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4. Converting an LV from \fBstriped\fP (with 4 stripes) to \fBraid6_nc\fP.
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@ -930,27 +930,27 @@ Convert the linear LV to raid1 with three images
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.nf
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Start with a striped LV:
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# lvcreate --stripes 4 -L64M -n my_lv vg
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# lvcreate --stripes 4 -L64M -n lv vg
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Convert the striped LV to raid6_n_6:
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# lvconvert --type raid6 vg/my_lv
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# lvconvert --type raid6 vg/lv
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# lvs -a -o lv_name,segtype,sync_percent,data_copies
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LV Type Cpy%Sync #Cpy
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my_lv raid6_n_6 100.00 3
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[my_lv_rimage_0] linear
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[my_lv_rimage_1] linear
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[my_lv_rimage_2] linear
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[my_lv_rimage_3] linear
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[my_lv_rimage_4] linear
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[my_lv_rimage_5] linear
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[my_lv_rmeta_0] linear
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[my_lv_rmeta_1] linear
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[my_lv_rmeta_2] linear
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[my_lv_rmeta_3] linear
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[my_lv_rmeta_4] linear
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[my_lv_rmeta_5] linear
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LV Type Cpy%Sync #Cpy
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lv raid6_n_6 100.00 3
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[lv_rimage_0] linear
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[lv_rimage_1] linear
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[lv_rimage_2] linear
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[lv_rimage_3] linear
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[lv_rimage_4] linear
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[lv_rimage_5] linear
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[lv_rmeta_0] linear
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[lv_rmeta_1] linear
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[lv_rmeta_2] linear
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[lv_rmeta_3] linear
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[lv_rmeta_4] linear
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[lv_rmeta_5] linear
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.fi
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This convert begins by allocating MetaLVs (rmeta_#) for each of the
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@ -988,68 +988,64 @@ traditional RAID6.
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.nf
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# lvs -o lv_name,segtype,sync_percent,data_copies
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LV Type Cpy%Sync #Cpy
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my_lv raid6_n_6 100.00 3
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[my_lv_rimage_0] linear
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[my_lv_rimage_1] linear
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[my_lv_rimage_2] linear
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[my_lv_rimage_3] linear
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[my_lv_rimage_4] linear
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[my_lv_rimage_5] linear
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[my_lv_rmeta_0] linear
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[my_lv_rmeta_1] linear
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[my_lv_rmeta_2] linear
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[my_lv_rmeta_3] linear
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[my_lv_rmeta_4] linear
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[my_lv_rmeta_5] linear
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LV Type Cpy%Sync #Cpy
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lv raid6_n_6 100.00 3
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[lv_rimage_0] linear
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[lv_rimage_1] linear
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[lv_rimage_2] linear
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[lv_rimage_3] linear
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[lv_rimage_4] linear
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[lv_rimage_5] linear
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[lv_rmeta_0] linear
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[lv_rmeta_1] linear
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[lv_rmeta_2] linear
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[lv_rmeta_3] linear
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[lv_rmeta_4] linear
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[lv_rmeta_5] linear
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# lvconvert --type raid6_nr vg/my_lv
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# lvconvert --type raid6_nr vg/lv
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# lvs -a -o lv_name,segtype,sync_percent,data_copies
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LV Type Cpy%Sync #Cpy
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my_lv raid6_nr 100.00 3
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[my_lv_rimage_0] linear
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[my_lv_rimage_0] linear
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[my_lv_rimage_1] linear
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[my_lv_rimage_1] linear
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[my_lv_rimage_2] linear
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[my_lv_rimage_2] linear
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[my_lv_rimage_3] linear
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[my_lv_rimage_3] linear
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[my_lv_rimage_4] linear
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[my_lv_rimage_5] linear
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[my_lv_rmeta_0] linear
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[my_lv_rmeta_1] linear
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[my_lv_rmeta_2] linear
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[my_lv_rmeta_3] linear
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[my_lv_rmeta_4] linear
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[my_lv_rmeta_5] linear
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LV Type Cpy%Sync #Cpy
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lv raid6_nr 100.00 3
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[lv_rimage_0] linear
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[lv_rimage_0] linear
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[lv_rimage_1] linear
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[lv_rimage_1] linear
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[lv_rimage_2] linear
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[lv_rimage_2] linear
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[lv_rimage_3] linear
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[lv_rimage_3] linear
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[lv_rimage_4] linear
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[lv_rimage_5] linear
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[lv_rmeta_0] linear
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[lv_rmeta_1] linear
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[lv_rmeta_2] linear
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[lv_rmeta_3] linear
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[lv_rmeta_4] linear
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[lv_rmeta_5] linear
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.fi
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The DataLVs are larger (additional segment in each) which provides space
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for out-of-place reshaping. The result is:
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FIXME: should we change device names in the example to sda,sdb,sdc?
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.br
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FIXME: include -o devices or seg_pe_ranges above also?
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.nf
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# lvs -a -o lv_name,segtype,seg_pe_ranges,dataoffset
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LV Type PE Ranges Doff
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r raid6_nr r_rimage_0:0-32 \\
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r_rimage_1:0-32 \\
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r_rimage_2:0-32 \\
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r_rimage_3:0-32
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[r_rimage_0] linear /dev/sda:0-31 2048
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[r_rimage_0] linear /dev/sda:33-33
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[r_rimage_1] linear /dev/sdaa:0-31 2048
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[r_rimage_1] linear /dev/sdaa:33-33
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[r_rimage_2] linear /dev/sdab:1-33 2048
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[r_rimage_3] linear /dev/sdac:1-33 2048
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[r_rmeta_0] linear /dev/sda:32-32
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[r_rmeta_1] linear /dev/sdaa:32-32
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[r_rmeta_2] linear /dev/sdab:0-0
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[r_rmeta_3] linear /dev/sdac:0-0
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LV Type PE Ranges Doff
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lv raid6_nr lv_rimage_0:0-32 \\
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lv_rimage_1:0-32 \\
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lv_rimage_2:0-32 \\
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lv_rimage_3:0-32
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[lv_rimage_0] linear /dev/sda:0-31 2048
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[lv_rimage_0] linear /dev/sda:33-33
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[lv_rimage_1] linear /dev/sdaa:0-31 2048
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[lv_rimage_1] linear /dev/sdaa:33-33
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[lv_rimage_2] linear /dev/sdab:1-33 2048
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[lv_rimage_3] linear /dev/sdac:1-33 2048
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[lv_rmeta_0] linear /dev/sda:32-32
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[lv_rmeta_1] linear /dev/sdaa:32-32
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[lv_rmeta_2] linear /dev/sdab:0-0
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[lv_rmeta_3] linear /dev/sdac:0-0
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.fi
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All segments with PE ranges '33-33' provide the out-of-place reshape space.
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