I've setup RAID-5 array disk, but recently one of the Hard drives is reallocating excessive sectors:
(Reallocated Sectors = 323)
# tw_cli /c0/p1 show all
/c0/p1 Status = OK
/c0/p1 Model = ST31000340NS
/c0/p1 Firmware Version = SN05
/c0/p1 Serial = 9QJ17SNX
/c0/p1 Capacity = 931.51 GB (1953525168 Blocks)
/c0/p1 Reallocated Sectors = 323
/c0/p1 Power On Hours = 49638
/c0/p1 Temperature = 24 deg C
/c0/p1 Spindle Speed = 14464 RPM
/c0/p1 Link Speed Supported = 1.5 Gbps
/c0/p1 Link Speed = 1.5 Gbps
/c0/p1 NCQ Supported = Yes
/c0/p1 NCQ Enabled = Yes
/c0/p1 Identify Status = N/A
/c0/p1 Belongs to Unit = u0
However, as you see below there is no problem in the RAID, and the lustre filesystem has been mounted on it, and is working properly now:
# tw_cli /c0 show
Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache AVrfy
------------------------------------------------------------------------------
u0 RAID-5 OK - - 64K 6519.19 ON OFF
Port Status Unit Size Blocks Serial
---------------------------------------------------------------
p0 OK u0 931.51 GB 1953525168 9QJ18Q8Y
p1 OK u0 931.51 GB 1953525168 9QJ17SNX
p2 OK u0 931.51 GB 1953525168 5QJ0DBNE
p3 OK u0 931.51 GB 1953525168 9QJ17NBC
p4 OK u0 931.51 GB 1953525168 9QJ0GWYX
p5 OK u0 931.51 GB 1953525168 9QJ18PKS
p6 OK u0 931.51 GB 1953525168 9QJ0YZCD
p7 OK u0 931.51 GB 1953525168 9QJ186K9
Now, I want to replace the p1 before something bad happens, and I want to do it without umount the filesystem (I mean Hot Replace). Is it going to be possible?