[Lustre-discuss] ldiskfs for MDT and zfs for OSTs?

Jeff Johnson jeff.johnson at aeoncomputing.com
Mon Oct 7 11:38:24 PDT 2013


On 10/7/13 11:23 AM, Anjana Kar wrote:
> Here is the exact command used to create a raidz2 pool with 8+2 drives,
> followed by the error messages:
>
> mkfs.lustre --fsname=cajalfs --reformat --ost --backfstype=zfs --index=0
> --mgsnode=10.10.101.171 at o2ib lustre-ost0/ost0 raidz2 /dev/sda /dev/sdc
> /dev/sde /dev/sdg /dev/sdi /dev/sdk /dev/sdm /dev/sdo /dev/sdq /dev/sds
>
Additional suggestion. You should make zfs/zpools with persistent device 
names like /dev/disk/by-path or /dev/disk/by-id. Standard 'sd' device 
names are not persistent and could change after a reboot or hardware 
change. This would be bad for a zpool with data.

Also, I don't know if its just email formatting but be sure that command 
is all on one line:

mkfs.lustre --fsname=cajalfs --reformat --ost --backfstype=zfs --index=0 \
--mgsnode=10.10.101.171 at o2ib lustre-ost0/ost0 raidz2 /dev/sda /dev/sdc \
/dev/sde /dev/sdg /dev/sdi /dev/sdk /dev/sdm /dev/sdo /dev/sdq /dev/sds



--Jeff

-- 
------------------------------
Jeff Johnson
Co-Founder
Aeon Computing

jeff.johnson at aeoncomputing.com
www.aeoncomputing.com
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High-performance Computing / Lustre Filesystems / Scale-out Storage




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