<div class="WordSection1"><p class="MsoNormal"><span lang="EN-GB">The process here below is self-explanatory of what happens.</span></p><p class="MsoNormal"><br><span lang="EN-GB"></span></p><p class="MsoNormal"><span lang="EN-GB">Starting with one volume (on /dev/sda1) I'd like to mirror it on /dev/sdb1 and having the mirror_log mirrored as well.</span></p>
<p class="MsoNormal"><br><span lang="EN-GB"></span></p><p class="MsoNormal"><span lang="EN-GB">Though I think there is plenty of PE I get the error message<br></span></p><p class="MsoNormal"><br><span lang="EN-GB"></span></p>
<p class="MsoNormal"><span lang="EN-GB"> Insufficient suitable allocatable extents for logical volume : 1536 more required</span></p><p class="MsoNormal"><span lang="EN-GB"> Unable to allocate extents for mirror(s).</span></p>
<p class="MsoNormal"><br><span lang="EN-GB"></span></p><p class="MsoNormal"><span lang="EN-GB">I mean the mirror_log is one PE, i.e. 4 Megabytes...<br></span></p><span lang="EN-GB"></span><p class="MsoNormal"><br></p><p class="MsoNormal">
Why "<b><span lang="EN-GB">lvconvert -i 5 -m1 --mirrorlog mirrored /dev/lvgrptstnlvm/root /dev/sdb1</span></b>" doesn't work whereas <br></p><p class="MsoNormal">"<b><span lang="EN-GB">lvconvert -m1 /dev/lvgrptstnlvm/root /dev/sdb1</span></b>" does? The space to be allocated differs by just one PE.<br>
</p><p class="MsoNormal"><br></p><p class="MsoNormal">I'm using Knoppix to fix a system due to other problems, I have noticed there was a (human) design problem with LVM and I want to achieve the goal of one volume mirrored in 2 parts and 2 mirrors logs each on one disk.</p>
<p class="MsoNormal"><br></p><p class="MsoNormal">Thanks,</p><p class="MsoNormal"><br></p><p class="MsoNormal">Alex<br></p><p class="MsoNormal"><br><span lang="EN-GB"></span></p><p class="MsoNormal">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br>
<span lang="EN-GB"></span></p><p class="MsoNormal"><span lang="EN-GB"><br></span></p><p class="MsoNormal"><b><span lang="EN-GB">root@Microknoppix:/home/knoppix# lvs -a -o +devices,lv_size</span></b></p><p class="MsoNormal">
<span lang="EN-GB">
LV VG Attr LSize Pool Origin Data% Move
Log Copy% Convert Devices LSize</span></p><p class="MsoNormal"><span lang="EN-GB">
root lvgrptstnlvm mwi-aom- 6.00g
root_mlog 100.00 root_mimage_0(0),root_mimage_1(0) 6.00g</span></p><p class="MsoNormal"><span lang="EN-GB">
[root_mimage_0] lvgrptstnlvm iwi-aom-
6.00g
/dev/sda1(0) 6.00g</span></p><p class="MsoNormal"><span lang="EN-GB">
[root_mimage_1] lvgrptstnlvm iwi-aom-
6.00g
/dev/sdb1(0) 6.00g</span></p><p class="MsoNormal"><span lang="EN-GB">
[root_mlog] lvgrptstnlvm lwi-aom-
4.00m
/dev/sdb1(1536) 4.00m</span></p><p class="MsoNormal"><b><span lang="EN-GB"><br></span></b></p><p class="MsoNormal"><b><span lang="EN-GB">root@Microknoppix:/home/knoppix# pvs -v -o +pv_pe_count,pv_pe_alloc_count</span></b></p>
<p class="MsoNormal"><span lang="EN-GB"> Scanning for physical volume names</span></p><p class="MsoNormal"><span lang="EN-GB"> PV VG Fmt Attr PSize PFree DevSize PV UUID PE Alloc</span></p>
<p class="MsoNormal"><span lang="EN-GB"> /dev/sda1 lvgrptstnlvm lvm2 a-- 9.00g 3.00g 9.00g 5h4peZ-7SVd-MKrH-IQNJ-UACQ-mM7Q-6CVeo5 2303 1536</span></p><p class="MsoNormal"><span lang="EN-GB"> /dev/sdb1 lvgrptstnlvm lvm2 a-- 7.07g 1.06g 9.00g VlGEw0-JaqC-THbz-G4mv-yHq5-9Y80-N5ANNQ 1809 1537</span></p>
<p class="MsoNormal"><b><span lang="EN-GB"><br></span></b></p><p class="MsoNormal"><b><span lang="EN-GB">root@Microknoppix:/home/knoppix# lvs -a -o +devices,lv_size</span></b></p><p class="MsoNormal"><span lang="EN-GB">
LV VG Attr LSize Pool Origin Data% Move
Log Copy% Convert Devices LSize</span></p><p class="MsoNormal"><span lang="EN-GB">
root lvgrptstnlvm mwi-aom- 6.00g
root_mlog 100.00 root_mimage_0(0),root_mimage_1(0) 6.00g</span></p><p class="MsoNormal"><span lang="EN-GB">
[root_mimage_0] lvgrptstnlvm iwi-aom-
6.00g
/dev/sda1(0) 6.00g</span></p><p class="MsoNormal"><span lang="EN-GB">
[root_mimage_1] lvgrptstnlvm iwi-aom-
6.00g
/dev/sdb1(0) 6.00g</span></p><p class="MsoNormal"><span lang="EN-GB">
[root_mlog] lvgrptstnlvm lwi-aom-
4.00m
/dev/sdb1(1536) 4.00m</span></p><p class="MsoNormal"><b><span lang="EN-GB"><br></span></b></p><p class="MsoNormal"><b><span lang="EN-GB">root@Microknoppix:/home/knoppix# lvconvert -m0 /dev/lvgrptstnlvm/root /dev/sdb1</span></b></p>
<p class="MsoNormal"><span lang="EN-GB"> /sbin/dmeventd: stat failed: No such file or directory</span></p><p class="MsoNormal"><span lang="EN-GB"> Logical volume root converted.</span></p><p class="MsoNormal"><b><span lang="EN-GB"><br>
</span></b></p><p class="MsoNormal"><b><span lang="EN-GB">root@Microknoppix:/home/knoppix# lvconvert -i 5 -m1 --mirrorlog mirrored /dev/lvgrptstnlvm/root /dev/sdb1</span></b></p><p class="MsoNormal"><span lang="EN-GB"> Insufficient suitable allocatable extents for logical volume : 1536 more required</span></p>
<p class="MsoNormal"><span lang="EN-GB"> Unable to allocate extents for mirror(s).</span></p><p class="MsoNormal"><b><span lang="EN-GB"><br></span></b></p><p class="MsoNormal"><b><span lang="EN-GB">root@Microknoppix:/home/knoppix# lvconvert -m1 /dev/lvgrptstnlvm/root /dev/sdb1</span></b></p>
<p class="MsoNormal"><span lang="EN-GB"> lvgrptstnlvm/root: Converted: 0.5%</span></p><p class="MsoNormal"><span lang="EN-GB">[...SKIP...]<br></span></p><span lang="EN-GB"> lvgrptstnlvm/root: Converted: 100.0%</span><p class="MsoNormal">
<b><span lang="EN-GB"><br></span></b></p><p class="MsoNormal"><b><span lang="EN-GB">root@Microknoppix:/home/knoppix# lvs -a -o +devices,lv_size</span></b></p><p class="MsoNormal"><span lang="EN-GB">
LV VG Attr LSize Pool Origin Data% Move
Log Copy% Convert Devices LSize</span></p><p class="MsoNormal"><span lang="EN-GB">
root lvgrptstnlvm mwi-aom- 6.00g
root_mlog 100.00 root_mimage_0(0),root_mimage_1(0) 6.00g</span></p><p class="MsoNormal"><span lang="EN-GB">
[root_mimage_0] lvgrptstnlvm iwi-aom-
6.00g
/dev/sda1(0) 6.00g</span></p><p class="MsoNormal"><span lang="EN-GB">
[root_mimage_1] lvgrptstnlvm iwi-aom-
6.00g
/dev/sdb1(0) 6.00g</span></p><p class="MsoNormal"><span lang="EN-GB">
[root_mlog] lvgrptstnlvm lwi-aom-
4.00m
/dev/sdb1(1536) 4.00m</span></p><p class="MsoNormal"><b><span lang="EN-GB"><br></span></b></p><p class="MsoNormal"><b><span lang="EN-GB">root@Microknoppix:/home/knoppix# pvs -v -o +pv_pe_count,pv_pe_alloc_count</span></b></p>
<p class="MsoNormal"><span lang="EN-GB"> Scanning for physical volume names</span></p><p class="MsoNormal"><span lang="EN-GB"> PV VG Fmt Attr PSize PFree DevSize PV UUID PE Alloc</span></p>
<p class="MsoNormal"><span lang="EN-GB"> /dev/sda1 lvgrptstnlvm lvm2 a-- 9.00g 3.00g 9.00g 5h4peZ-7SVd-MKrH-IQNJ-UACQ-mM7Q-6CVeo5 2303 1536</span></p><p class="MsoNormal"><span lang="EN-GB"> /dev/sdb1 lvgrptstnlvm lvm2 a-- 7.07g 1.06g 9.00g VlGEw0-JaqC-THbz-G4mv-yHq5-9Y80-N5ANNQ 1809 1537</span></p>
<p class="MsoNormal"><b><br></b></p><p class="MsoNormal"><b>root@Microknoppix:/home/knoppix#</b></p></div>