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lbaops:lbaobservingnotes:parkesclean [2009/07/03 15:05]
cehotan
lbaops:lbaobservingnotes:parkesclean [2015/12/18 16:38] (current)
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 - [[.:#redetect | Redetect]] devices to refresh the number of slices and disk size.\\ - [[.:#redetect | Redetect]] devices to refresh the number of slices and disk size.\\
 - Change the number of [[.:#reslice | slices ]] on a set of disks.\\ - Change the number of [[.:#reslice | slices ]] on a set of disks.\\
-- [[.:#rebuild | Rebuild]] a degraded array.\\ 
 - Put a new [[.:#repartition | partition]] or partition table on some disks (after reslicing, or because there was a problem).\\ - Put a new [[.:#repartition | partition]] or partition table on some disks (after reslicing, or because there was a problem).\\
 - [[.:#reformat | Reformat]] disks so they are clean for the upcoming run.\\ - [[.:#reformat | Reformat]] disks so they are clean for the upcoming run.\\
 +- [[.:#rebuild | Rebuild]] a degraded array.\\
 The most common, of course, is simply reformatting.\\ The most common, of course, is simply reformatting.\\
 \\ \\
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 /dev/sdc1             2.7T  202M  2.7T   1% /data/xraid0 /dev/sdc1             2.7T  202M  2.7T   1% /data/xraid0
 /dev/sdd1             2.7T  202M  2.7T   1% /data/xraid1</code> /dev/sdd1             2.7T  202M  2.7T   1% /data/xraid1</code>
-%color=#006600%Make note of device names - /dev/sdc1 is /data/xraid0.**+%color=#006600%Make note of device names - /dev/sdc1 is /data/xraid0.**\\
 <code>pkvsi1:~# umount /data/xraid0</code> <code>pkvsi1:~# umount /data/xraid0</code>
 %color=#006600%Check that the disk sets already contain labels (which ideally should be correct, you can check that they are during formatting and change afterward with ''e2label'' if necessary.**\\ %color=#006600%Check that the disk sets already contain labels (which ideally should be correct, you can check that they are during formatting and change afterward with ''e2label'' if necessary.**\\
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 ''followed by mounting the disks and running ''chown vlbi:vlbi /dev/sdc1'' - This means we use ext2 format, but the -j means Journalling, so it's actually ext3 format. This isn't the most efficient format, but the journalling is good if accidents happen with disk removal! -m 0 means don't reserve space for root, and -L allows us to specify the disk volume label, and we want the disks to be owned by the group VLBI.\\ ''followed by mounting the disks and running ''chown vlbi:vlbi /dev/sdc1'' - This means we use ext2 format, but the -j means Journalling, so it's actually ext3 format. This isn't the most efficient format, but the journalling is good if accidents happen with disk removal! -m 0 means don't reserve space for root, and -L allows us to specify the disk volume label, and we want the disks to be owned by the group VLBI.\\
 \\ \\
-Repeat for as many disk sets as necessary - can do up to 4 at a time with two chassis (two on pkvsi1 and two on pkvsi2). When all 4 are done (or as many as necessary), run 'df -h' again to check that your devices are mounted, are ~2.7TB and have ~202MB / 1% used, the rest available.\\+Repeat for as many disk sets as necessary - can do up to 4 at a time with two chassis (two on pkvsi1 and two on pkvsi2). When all 4 are done (or as many as necessary), run '''df -h''' again to check that your devices are mounted, are ~2.7TB and have ~202MB / 1% used, the rest available.\\
 \\ \\
 [[.:#rebuild]] [[.:#rebuild]]
lbaops/lbaobservingnotes/parkesclean.txt · Last modified: 2015/12/18 16:38 (external edit)