[NBLUG/talk] Fwd: Odd Raid Setup

[Omar Eljumaily]

The naming of mount points seems strange.  I'm not sure, but you may 
have 2 11 TB arrays, not 1 22 TB. /vmath/vedio might have failed because 
it got too full, thinking that it had 22 TB instead of 11.

Just a guess.  If you want to combine partitions into a single larger 
partition, there are tools for doing that.  I don't have them handy in 
my head right now.

Omar


On 2/25/2016 4:47 PM, gandalf at sonic.net wrote:
> debian 6.0.3
>
> question filesystem: zfs Raid 6 - solaris filesystem
>
>
> I've got a weird setup with two raid6 arrays each of about 11T. The 
> odd thing is how they are arranged. The one raid is mounted on /vmath 
> and the other raid is mounted on /vmath/video. The actual video files 
> are stored within /vmath/video. This seems really odd. Does anybody 
> here know what's going on? Is this just an odd way to get a 22T raid 
> array?
>
> root at vmath:~# df -h
> Filesystem            Size  Used Avail Use% Mounted on
> /dev/md0              226G  3.5G  211G   2% /
> tmpfs                 4.0G     0  4.0G   0% /lib/init/rw
> udev                  4.0G  372K  3.9G   1% /dev
> tmpfs                 4.0G     0  4.0G   0% /dev/shm
> vmath                  11T  128K   11T   1% /vmath
> vmath/video            22T   11T   11T  51% /vmath/video
>
> root at vmath:/etc# zfs list
> NAME          USED  AVAIL  REFER  MOUNTPOINT
> vmath        10.8T  10.6T  62.8K  /vmath
> vmath/video  10.7T  10.6T  10.7T  /vmath/video
>
> root at vmath:/etc# zpool status
>   pool: vmath
>  state: DEGRADED
> status: One or more devices could not be used because the label is 
> missing or
>         invalid.  Sufficient replicas exist for the pool to continue
>         functioning in a degraded state.
> action: Replace the device using 'zpool replace'.
>    see: http://www.sun.com/msg/ZFS-8000-4J
>  scan: resilvered 24.8M in 0h1m with 0 errors on Mon Dec 29 10:23:10 2014
> config:
>
>         NAME        STATE     READ WRITE CKSUM
>         vmath       DEGRADED     0     0     0
>           raidz2-0  ONLINE       0     0     0
>             sdn     ONLINE       0     0     0
>             sdm     ONLINE       0     0     0
>             sdl     ONLINE       0     0     0
>             sdk     ONLINE       0     0     0
>             sdr     ONLINE       0     0     0
>             sdq     ONLINE       0     0     0
>             sdp     ONLINE       0     0     0
>             sdo     ONLINE       0     0     0
>           raidz2-1  DEGRADED     0     0     0
>             sdf     ONLINE       0     0     0
>             sde     ONLINE       0     0     0
>             sdd     ONLINE       0     0     0
>             sdc     ONLINE       0     0     0
>             sdj     ONLINE       0     0     0
>             sdi     UNAVAIL      0     4     0
>             sdg     ONLINE       0     0     0
>             sdh     UNAVAIL      9   129     3
>
> errors: No known data errors
>
>
> root at vmath:~# cat /etc/fstab
> # /etc/fstab: static file system information.
> #
> # Use 'blkid' to print the universally unique identifier for a
> # device; this may be used with UUID= as a more robust way to name 
> devices
> # that works even if disks are added and removed. See fstab(5).
> #
> # <file system> <mount point>   <type> <options>       <dump>  <pass>
> proc            /proc           proc    defaults        0       0
> # / was on /dev/md0 during installation
> UUID=4eaa682b-9eef-48b0-baa8-d045f9ea5ca0 /               ext4 
> relatime,user_xattr,errors=remount-ro 0       1
> # swap was on /dev/sda1 during installation
> UUID=15d027a5-3ee5-40f2-9f83-b5f50f83ba67 none            swap sw     
>          0       0
> # swap was on /dev/sdb1 during installation
> UUID=3efecbd4-631e-4b3f-a6d4-99d7eb750b14 none            swap sw     
>          0       0
> /dev/scd0       /media/cdrom0   udf,iso9660 user,noauto 0       0
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