Ok, so i replaced disk3 data drive (2tb) with a 4tb drive, all added and parity complete

 

i then preclear the said 2tb drive and try adding it to my array as disk5 (next available drive) and set FS from auto to XFS (the other drives are reiserfs)

 

i then start the array and it says unmountable for the 2TB XFS drive

 

i have common problems plugin installed and it told me to stop the array and start in maintenance mode and do a Check Filesystem Status

 

so i run this on disk5 and it says the below:

 

Phase 1 - find and verify superblock...
bad primary superblock - bad magic number !!!

attempting to find secondary superblock...

 

i can see disk5 on the main page has 508,034 reads currently and rising

 

should i just leave it to finish? or is there anything else i need to do?

 

 

 

log is below:

 

 

Dec 31 14:06:22 Tower kernel: mdcmd (31): set md_num_stripes 1280
Dec 31 14:06:22 Tower kernel: mdcmd (32): set md_sync_window 384
Dec 31 14:06:22 Tower kernel: mdcmd (33): set md_sync_thresh 192
Dec 31 14:06:22 Tower kernel: mdcmd (34): set md_write_method
Dec 31 14:06:22 Tower kernel: mdcmd (35): set spinup_group 0 0
Dec 31 14:06:22 Tower kernel: mdcmd (36): set spinup_group 1 0
Dec 31 14:06:22 Tower kernel: mdcmd (37): set spinup_group 2 0
Dec 31 14:06:22 Tower kernel: mdcmd (38): set spinup_group 3 0
Dec 31 14:06:22 Tower kernel: mdcmd (39): set spinup_group 4 0
Dec 31 14:06:22 Tower kernel: mdcmd (40): set spinup_group 5 0
Dec 31 14:06:22 Tower emhttp: shcmd (854): /usr/local/sbin/set_ncq sdb 1 &> /dev/null
Dec 31 14:06:22 Tower emhttp: shcmd (855): echo 128 > /sys/block/sdb/queue/nr_requests
Dec 31 14:06:22 Tower emhttp: shcmd (856): /usr/local/sbin/set_ncq sdc 1 &> /dev/null
Dec 31 14:06:22 Tower emhttp: shcmd (857): echo 128 > /sys/block/sdc/queue/nr_requests
Dec 31 14:06:22 Tower emhttp: shcmd (858): /usr/local/sbin/set_ncq sdd 1 &> /dev/null
Dec 31 14:06:22 Tower emhttp: shcmd (859): echo 128 > /sys/block/sdd/queue/nr_requests
Dec 31 14:06:22 Tower emhttp: shcmd (860): /usr/local/sbin/set_ncq sde 1 &> /dev/null
Dec 31 14:06:22 Tower emhttp: shcmd (861): echo 128 > /sys/block/sde/queue/nr_requests
Dec 31 14:06:22 Tower emhttp: shcmd (862): /usr/local/sbin/set_ncq sdf 1 &> /dev/null
Dec 31 14:06:22 Tower emhttp: shcmd (863): echo 128 > /sys/block/sdf/queue/nr_requests
Dec 31 14:06:22 Tower emhttp: shcmd (864): /usr/local/sbin/set_ncq sdg 1 &> /dev/null
Dec 31 14:06:22 Tower emhttp: shcmd (865): echo 128 > /sys/block/sdg/queue/nr_requests
Dec 31 14:06:22 Tower kernel: mdcmd (41): start STOPPED
Dec 31 14:06:22 Tower kernel: unraid: allocating 36220K for 1280 stripes (7 disks)
Dec 31 14:06:22 Tower kernel: md1: running, size: 1953514552 blocks
Dec 31 14:06:22 Tower kernel: md2: running, size: 1953514552 blocks
Dec 31 14:06:22 Tower kernel: md3: running, size: 3906985768 blocks
Dec 31 14:06:22 Tower kernel: md4: running, size: 1953514552 blocks
Dec 31 14:06:22 Tower kernel: md5: running, size: 1953514552 blocks
Dec 31 14:06:22 Tower emhttp: shcmd (866): udevadm settle
Dec 31 14:07:09 Tower php: /usr/local/emhttp/plugins/dynamix/scripts/xfs_check 'start' '/dev/md5' 'WDC_WD20EARX-00PASB0_WD-WCAxxxxxx' '-n'
Dec 31 14:36:15 Tower kernel: mdcmd (42): spindown 0
Dec 31 14:36:16 Tower kernel: mdcmd (43): spindown 1
Dec 31 14:36:16 Tower kernel: mdcmd (44): spindown 2
Dec 31 14:36:17 Tower kernel: mdcmd (45): spindown 3
Dec 31 14:36:17 Tower kernel: mdcmd (46): spindown 4
Dec 31 14:36:19 Tower emhttp: shcmd (1241): /usr/sbin/hdparm -y /dev/sdh &> /dev/null
Dec 31 14:36:19 Tower emhttp: shcmd (1242): /usr/sbin/hdparm -y /dev/sdi &> /dev/null

If you have just run pre-clear on the disk it is not surprising it is unmountable as at this point no file system has been created.  UnRAID should be offering to format the drive and that is what you need to do to get it mountable.

 

Note that after the format there will be no data on the drive (which is what you expect for a drive just added to the array), but double-check it is the drive you expect before going ahead with the format.    You do not want to accidentally format one of the drives with data on them as that would cause data loss.

doh! missed the format button further down the screen

 

all sorted now

 

thanks!