{"id":19490,"date":"2017-04-03T06:20:18","date_gmt":"2017-04-02T22:20:18","guid":{"rendered":"https:\/\/2blog.ilc.edu.tw\/25793\/2017\/04\/03\/lvm-lv-%e6%8c%87%e4%bb%a4\/"},"modified":"2017-04-03T06:20:18","modified_gmt":"2017-04-02T22:20:18","slug":"lvm-lv-%e6%8c%87%e4%bb%a4","status":"publish","type":"post","link":"https:\/\/2blog.ilc.edu.tw\/25793\/2017\/04\/03\/lvm-lv-%e6%8c%87%e4%bb%a4\/","title":{"rendered":"LVM – LV \u6307\u4ee4"},"content":{"rendered":"

lvcreate\u00a0\u5f9e VG\u00a0\u4e2d\u5efa\u7acb LV
# lvcreate -L <size> [-n <lv name>] <vg><\/span>
# lvcreate -L 50M -n v1 diskvg<\/span>
\u00a0 Rounding up size to full physical extent 52.00 MiB<\/span>
\u00a0 Logical volume “v1” created<\/span>
# lvcreate -L 150M -n v2 diskvg<\/span>
\u00a0 Rounding up size to full physical extent 152.00 MiB<\/span>
\u00a0 Logical volume “v2” created<\/span>
# lvcreate -L 250M -n v3 diskvg<\/span>
\u00a0 Rounding up size to full physical extent 252.00 MiB<\/span>
\u00a0 Logical volume “v3” created<\/span>
\u4ee5 32\u00a0\u500b PE\u00a0\u7a7a\u9593\u4f86\u5efa\u7acb LV
# lvcreate -l 32 -n v4 diskvg<\/span><\/p>\n

lvdisplay\u00a0\u986f\u793a LV\u00a0\u8cc7\u8a0a
# lvdisplay \/dev\/diskvg\/v1<\/span>
\u00a0 — Logical volume —<\/span>
\u00a0 LV Name\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/dev\/diskvg\/v1<\/span>
\u00a0 VG Name\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 diskvg<\/span>
\u00a0 LV UUID\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 50dHxI-bwNi-xksv-P4rS-XS1W-suNi-z3ljTc<\/span>
\u00a0 LV Write Access\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 read\/write<\/span>
\u00a0 LV Status\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 available<\/span>
\u00a0 # open\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0<\/span>
\u00a0 LV Size\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 52.00 MiB<\/span>
\u00a0 Current LE\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 13<\/span>
\u00a0 Segments\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1<\/span>
\u00a0 Allocation\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 inherit<\/span>
\u00a0 Read ahead sectors\u00a0\u00a0\u00a0\u00a0 auto<\/span>
\u00a0 – currently set to\u00a0\u00a0\u00a0\u00a0 1024<\/span>
\u00a0 Block device\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 253:0<\/span><\/p>\n

[@more@]lvscan\u00a0\u7528\u4f86\u6383\u63cf\u7cfb\u7d71\u4e2d\u6240\u6709 LV\u00a0\u7684\u8cc7\u8a0a
# lvscan<\/span>
\u00a0 inactive\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ‘\/dev\/diskvg\/v1’ [52.00 MiB] inherit<\/span>
\u00a0 inactive\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ‘\/dev\/diskvg\/v2’ [152.00 MiB] inherit<\/span>
\u00a0 inactive\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ‘\/dev\/diskvg\/v3’ [252.00 MiB] inherit<\/span>
\u00a0 ACTIVE\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ‘\/dev\/diskvg\/v4’ [128.00 MiB] inherit<\/span><\/p>\n

lvextend\u00a0\u7528\u4f86\u653e\u5927 Logical volume\u00a0\u7684\u5927\u5c0f
# lvextend {-L [+]LogicalVolumeSize | -1 [+]LogicalExtentsNumber } <lv><\/span>
\u628a v1\u00a0\u7a7a\u9593\u52a0\u5927 100M
# lvextend -L +100M \/dev\/diskvg\/v1<\/span>
\u00a0 Extending logical volume v1 to 152.00 MiB<\/span>
\u00a0 Logical volume v1 successfully resized<\/span>
# lvdisplay \/dev\/diskvg\/v1<\/span>
\u00a0 — Logical volume —<\/span>
\u00a0 LV Name\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/dev\/diskvg\/v1<\/span>
\u00a0 VG Name\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 diskvg<\/span>
\u00a0 LV UUID\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 50dHxI-bwNi-xksv-P4rS-XS1W-suNi-z3ljTc<\/span>
\u00a0 LV Write Access\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 read\/write<\/span>
\u00a0 LV Status\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 NOT available<\/span>
\u00a0 LV Size\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 152.00 MiB<\/span>
\u00a0 Current LE\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 38<\/span>
\u00a0 Segments\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2<\/span>
\u00a0 Allocation\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 inherit<\/span>
\u00a0 Read ahead sectors\u00a0\u00a0\u00a0\u00a0 auto<\/span><\/p>\n

lvremove\u00a0\u522a\u9664 Logical Volume
# lvremove \/dev\/diskvg\/v4<\/span>
Do you really want to remove active logical volume v4? [y\/n]: y<\/span><\/span>
\u00a0 Logical volume “v4” successfully removed<\/span>
# lvscan<\/span>
\u00a0 inactive\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ‘\/dev\/diskvg\/v1’ [152.00 MiB] inherit<\/span>
\u00a0 inactive\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ‘\/dev\/diskvg\/v2’ [152.00 MiB] inherit<\/span>
\u00a0 inactive\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ‘\/dev\/diskvg\/v3’ [252.00 MiB] inherit<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

lvcreate\u00a0\u5f9e VG\u00a0\u4e2d\u5efa\u7acb LV# lvcreate -L <size> [-n < … <\/p>\n

\u95b1\u8b80\u5168\u6587\u3008LVM – LV \u6307\u4ee4\u3009<\/span><\/a><\/p>\n","protected":false},"author":55,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[192],"tags":[],"class_list":["post-19490","post","type-post","status-publish","format-standard","hentry","category-c-105011"],"meta_key":{"_pingme":["1"],"_encloseme":["1"],"lt_post_id":["685439"]},"_links":{"self":[{"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/posts\/19490"}],"collection":[{"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/users\/55"}],"replies":[{"embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/comments?post=19490"}],"version-history":[{"count":0,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/posts\/19490\/revisions"}],"wp:attachment":[{"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/media?parent=19490"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/categories?post=19490"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/25793\/wp-json\/wp\/v2\/tags?post=19490"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}