I am using a CentOS 6 based distro called Clearos. I believe it is running a 2.6.xx kernel if memory serves me right
-----Original message----- From: Gustin Johnson <gus...@meganerd.ca> Sent: Thursday 26th September 2013 11:38 To: CLUG General <clug-talk@clug.ca> Subject: Re: [clug-talk] software raid question Did you resize the file system? I have two 5.5 TB arrays (one 4 disk RAID 5 and one 5 disk RAID 6) both built via mdadm. One of the arrays has been resized 4 times over the years. What distro and kernel are you running? I seem to remember there being a kernel parameter for large block devices (config_lbd IIRC) back in the earlier 2.6.xx days (that parameter does not seem to be present on on my 3.5.xx+ kernels). My RAID 6 array: sudo mdadm --detail /dev/md127 /dev/md127: Version : 1.2 Creation Time : Sat Aug 25 23:02:27 2012 Raid Level : raid6 Array Size : 5860125696 (5588.65 GiB 6000.77 GB) Used Dev Size : 1953375232 (1862.88 GiB 2000.26 GB) Raid Devices : 5 Total Devices : 5 Persistence : Superblock is persistent Update Time : Thu Sep 26 08:07:02 2013 State : clean Active Devices : 5 Working Devices : 5 Failed Devices : 0 Spare Devices : 0 Layout : left-symmetric Chunk Size : 512K Name : cygnus:md-backup0 (local to host cygnus) UUID : bd5bb90e:853a22ab:1dcc9120:9f320b29 Events : 65908 Number Major Minor RaidDevice State 0 8 98 0 active sync /dev/sdg2 1 8 66 1 active sync /dev/sde2 2 8 50 2 active sync /dev/sdd2 3 8 82 3 active sync /dev/sdf2 5 65 18 4 active sync /dev/sdr2 One quick note, RAID 5 is actually dangerous and not something I would recommend if you care about the data. If you lose one device you are at a higher risk when the array rebuilds and you are thrashing the remaining disks. On Thu, Sep 26, 2013 at 7:52 AM, Andrew Robinson <and...@boohahaonline.com> wrote: Hey has anyone run into issues with trying to grow a Linux software raid? I’ve just finished syncing all of my data from 3x2TB (in raid 5) to 3x3TB (still raid 5). The raid array should show a capacity of approx. 5.5 TB, but instead shows only 4. I’ve tried re running the mdadm –grow command but with no success. Is there are a hard limit to the size of the array in Linux? I should mention that each of these drives are formatted as GTP drives, with 1 partition of type FD that consumes the entire 2.79 TB of space on each drive. I’ve been using he instructions located at https://raid.wiki.kernel.org/index.php/Growing#Expanding_existing_partitions if anyone is curious to what I’ve done so far _______________________________________________ clug-talk mailing list clug-talk@clug.ca http://clug.ca/mailman/listinfo/clug-talk_clug.ca Mailing List Guidelines (http://clug.ca/ml_guidelines.php) **Please remove these lines when replying _______________________________________________ clug-talk mailing list clug-talk@clug.ca http://clug.ca/mailman/listinfo/clug-talk_clug.ca Mailing List Guidelines (http://clug.ca/ml_guidelines.php) **Please remove these lines when replying
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