Linux Software RAID

Create a software raid

Locate your disks:

ls /dev/sd*

Partition the disks:

 fdisk /dev/sdb
 'n' = New partition
 'p' = Primary
 accept the defaults
 't' = Change filesystem type
 'fd' = Linux RAID Autodetect
 'w' = write the changes

Once the disk is installed create a partition of type ‘Linux raid autodetect’ (type fd) that is the same size as the remaining drives in the raid.

mdadm --create /dev/md0 --level=6 --raid-devices=14 /dev/sd{b,c,d,e,f,g,h,i,j,k,l,m,n,o}1

Check the status of the RAID build:

watch cat /proc/mdstat

Replacing a failed disk

Start by replacing the bad disk with a replacement. The bad disk can be found by comparing serial numbers.

Once the disk is installed create a partition of type ‘Linux raid autodetect’ (type fd) that is the same size as the remaining drives in the raid.

Then simply add the disk to the raid:

 mdadm /dev/md0 --add /dev/sdb1

Check that the rebuild is underway:

 watch -n 1 cat /proc/mdstat


Recovering a failed software raid from LinuxForums.


[root@ornery ~]# cat /sys/block/md0/md/array_state
[root@ornery ~]# echo "clean" > /sys/block/md0/md/array_state
[root@ornery ~]# cat /sys/block/md0/md/array_state
[root@ornery ~]# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : active raid6 sdc1[1] sdi1[7] sdh1[6] sdg1[5] sdf1[4] sde1[3] sdd1[2]
      2344252416 blocks level 6, 256k chunk, algorithm 2 [8/7] [_UUUUUUU]

unused devices: <none>
[root@ornery ~]# mount -o ro /dev/md0 /data
[root@ornery ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/hda2             226G   46G  168G  22% /
/dev/hda1             251M   52M  187M  22% /boot
/dev/shm              2.9G     0  2.9G   0% /dev/shm
/dev/sda2              65G   35G   27G  56% /var
/dev/md0              2.2T  307G  1 lexapro anxiety.8T  15% /data
Supposing we can predict 90% of the home wins that roughly 19 fake Oakleys matches, plus half the away wins another 7 matches. So, out of the coupon as a whole, with a reliable football draw predictor we can expect to predict 26 matches (homes and aways). That leaves 23 matches, from which need to find 8 football draws. The plan was for the probe’s parachute to deploy, slowing the whole thing down so that NASA could safely intercept it and retrieve wholesale china jerseys the precious data. But the chutes failed, causing Genesis to plummet. What went wrong? All of the scientists, and engineers, and other such smart folks at NASA installed a “gravity switch” backwards. Of course having a go to look requires some talent or, at the very least, the ability to emote. Lacking that, a favorite body part will do. For instance, Jean Claude Van Damme desperately wants to show you his right arm. It is tender and sweet. If you wholesale nfl jerseys have a mandolin, used for onion, celery, and fennel. Used chicken broth and 1 Tbsp vodka in lieu of white wine (didn have any. Other sites, such as Amazon, allow for unlimited promotional or coupon codes per order, as long as the order meets the minimum requirements for the code. Stores such as Clinque only allow one coupon per order. If you are having difficulty finding out if you are able to use multiple codes in one transaction, read the “help” section on the website or call customer service.. Overall it enhances the masculine traits, sex drive, and energy level in men. They apparently also affect the overall health of men. Now that we have a cheap jerseys wholesale fair idea of what these testosterone boosters do and how they work, let us take a look at what are the possible side effects of this hormone and whether they are safe or not. What they should do: Let Pierre Paul walk. There’s just too much risk involved here, and the pass rusher will command a big deal. Re sign Robert Ayers if the price stays reasonable, and start to rebuild the line through the draft. 10. ERIN ANDREWS CANNOT DRINK whiskey like a sailor. Or curse like one too. Cheerleading is a highly physical activity that requires strength, endurance, flexibility and balance. You should incorporate conditioning workouts for each of these key areas into your weekly training program. Do each of the following conditioning workouts once per week. The settling of the International Time Line at Greenwich, England (Greenwich Mean Time) enables to world to be divided cheap oakleys into time zones. NFL Jerseys Cheap We know that different parts of the world are in one of 24 separate time zones and all commercial activity finds rhythm from this practical division of geography into these agreed time zones. The rubber cheap oakley sunglasses plantation foreman in Nigeria knows exactly when the product manager will be available in Akron, Ohio because of this internationally employed system of measuring time.
Posted in Knowledge and tagged , , .

Leave a Reply

Your email address will not be published. Required fields are marked *