November 24, 201213 yr I want to replace my parity drive with a new 3TB drive I just ordered and run the preclear 3 times is this correct? Its a Seagate Barracuda 7200.14 ST3000DM001 I should stop the array power it down install the drive power it up start the array then preclear_disk.sh -A -c 3 /dev/xxx Is this correct, sorry I don't do this much and want to make sure I do it correctly. Also any idea how long it will take to preclear it 3 times, (a week)? Than I should stop the array power it down replace the parity drive with the one I just cleared power it up and hit start Correct? thanks
November 24, 201213 yr Doesn't your Norco have hot-swap drive bays? If so, you only need to stop the array power it down install the drive power it up start the array then login cd /boot preclear_disk.sh -A -c 3 /dev/xxx (If the Default partition format in the unRAID Disk Settings page is set to "4K-aligned", the '-A' is unnecessary) Then you should stop the array power it down replace the parity drive with the one I just cleared Reassign the new drive as the parity drive Remove (or reassign) the old parity drive power it up and hit start Rebuild parity
November 24, 201213 yr Author Doesn't your Norco have hot-swap drive bays? yes, I think it does but I'm always affraid of doingthat for some reason so I prefer to shut it down maybe I will try what you suggest this time. This is only for the 4224 case and not the 4220 case correct. Norco hotswap controller causes drive death http://lime-technology.com/forum/index.php?topic=23525.0 Thanks
November 24, 201213 yr It is all a question of personal preference for hot swap vs cold swap. there is no right or wrong... (unless you see that bad blue smoke)
November 25, 201213 yr I have the iStarUSA trayless hotswap cages, and managing the server has never been so easy. I frequently test disks on the server even if they're from other machines. I even have a trayless e-SATA docking station which I can use as a 16th bay.
November 28, 201213 yr Your steps are what I did, but I did a parity check also, just before replacing the parity drive...
November 28, 201213 yr Your steps are what I did, but I did a parity check also, just before replacing the parity drive... Concur with this extra step. Making double-sure that parity check (not repair) comes back with ZERO errors.... before rebuilding parity on a bigger drive. I've chosen to do this extra step, even when NOT rebuilding the parity drive -- but replacing/upgrading ANY drive.
December 1, 201213 yr Author So I was running a pre clear though telnet and I lost power last night. The server stayed up since I have a UPS on that but the computer that I logged into to telnet shut down. Guess I have to start over. I haven't lost power in at least 6 months so of course it has to happen now.
December 1, 201213 yr So I was running a pre clear though telnet and I lost power last night. The server stayed up since I have a UPS on that but the computer that I logged into to telnet shut down. Guess I have to start over. I haven't lost power in at least 6 months so of course it has to happen now. Screen command is your friend.
December 1, 201213 yr Author yup it's compatible thanks. However I already started preclearing the drive again though a telnet session. Guess there is no way to transfer it over to screen.
December 1, 201213 yr Screen is handy, but I'm so glad I got an IPMI enabled motherboard for my Unraid box as it allows you to connect directly to the console from anywhere. My Unraid box has never had a keyboard, mouse or monitor connected to it at any point in its life.
December 1, 201213 yr Author Yeah I have an ipmi motherboard also but don't know how to use it. I should look into it
December 2, 201213 yr Yeah I have an ipmi motherboard also but don't know how to use it. I should look into it Just FYI, this should work for you : ftp://ftp.supermicro.com/utility/IPMIView/ (I seem to remember it wasn't obvious to find when I originally looked).
December 2, 201213 yr Author Yeah I have an ipmi motherboard also but don't know how to use it. I should look into it Just FYI, this should work for you : ftp://ftp.supermicro.com/utility/IPMIView/ (I seem to remember it wasn't obvious to find when I originally looked). So to use screen I just type in telnet like I usually would then cd /boot, screen, then I hit space bar correct? The link to IPMIVIEW is asking for a password
December 3, 201213 yr The link to IPMIVIEW is asking for a password Doesn't for me. I get the FTP directory listing. You might try again as they also have the PDF manual in the same directory. It will explain how to use IPMIView. Once you try IPMI you won't want a remote server without it!
December 3, 201213 yr Author Just replaced my parity drive with a larger one, I need to hit "Sync" to start the parity sync correct?
December 4, 201213 yr Just replaced my parity drive with a larger one, I need to hit "Sync" to start the parity sync correct? yes. Then, once the initial calculations are written to the parity drive you must then perform a manual parity check to ensure what you've written can be read. Finally, you must look at the SMART report for that drive to see if any sectors are pending re-allocation because they cannot be read. Joe L.
December 5, 201213 yr Author Just replaced my parity drive with a larger one, I need to hit "Sync" to start the parity sync correct? yes. Then, once the initial calculations are written to the parity drive you must then perform a manual parity check to ensure what you've written can be read. Finally, you must look at the SMART report for that drive to see if any sectors are pending re-allocation because they cannot be read. Joe L. So I ran the manual parity check and no errors were found so that good. Here is m smart report, looks OK to me what do you think? Statistics for /dev/sdi ST3000DM001-1CH166_W1F1N8ZG smartctl -a -d ata /dev/sdi smartctl 5.40 2010-10-16 r3189 [i486-slackware-linux-gnu] (local build) Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net === START OF INFORMATION SECTION === Device Model: ST3000DM001-1CH166 Serial Number: W1F1N8ZG Firmware Version: CC24 User Capacity: 3,000,592,982,016 bytes Device is: Not in smartctl database [for details use: -P showall] ATA Version is: 8 ATA Standard is: ATA-8-ACS revision 4 Local Time is: Tue Dec 4 21:09:24 2012 EST SMART support is: Available - device has SMART capability. SMART support is: Enabled === START OF READ SMART DATA SECTION === SMART overall-health self-assessment test result: PASSED General SMART Values: Offline data collection status: (0x00) Offline data collection activity was never started. Auto Offline Data Collection: Disabled. Self-test execution status: ( 0) The previous self-test routine completed without error or no self-test has ever been run. Total time to complete Offline data collection: ( 97) seconds. Offline data collection capabilities: (0x73) SMART execute Offline immediate. Auto Offline data collection on/off support. Suspend Offline collection upon new command. No Offline surface scan supported. Self-test supported. Conveyance Self-test supported. Selective Self-test supported. SMART capabilities: (0x0003) Saves SMART data before entering power-saving mode. Supports SMART auto save timer. Error logging capability: (0x01) Error logging supported. General Purpose Logging supported. Short self-test routine recommended polling time: ( 1) minutes. Extended self-test routine recommended polling time: ( 255) minutes. Conveyance self-test routine recommended polling time: ( 2) minutes. SCT capabilities: (0x3085) SCT Status supported. SMART Attributes Data Structure revision number: 10 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x000f 115 100 006 Pre-fail Always - 89306608 3 Spin_Up_Time 0x0003 097 097 000 Pre-fail Always - 0 4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 5 5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always - 0 7 Seek_Error_Rate 0x000f 100 253 030 Pre-fail Always - 979917 9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 93 10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 4 183 Runtime_Bad_Block 0x0032 100 100 000 Old_age Always - 0 184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0 187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0 188 Command_Timeout 0x0032 100 100 000 Old_age Always - 0 189 High_Fly_Writes 0x003a 088 088 000 Old_age Always - 12 190 Airflow_Temperature_Cel 0x0022 074 068 045 Old_age Always - 26 (Min/Max 20/30) 191 G-Sense_Error_Rate 0x0032 100 100 000 Old_age Always - 0 192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 4 193 Load_Cycle_Count 0x0032 100 100 000 Old_age Always - 18 194 Temperature_Celsius 0x0022 026 040 000 Old_age Always - 26 (0 19 0 0) 197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0 240 Head_Flying_Hours 0x0000 100 253 000 Old_age Offline - 112936165048404 241 Total_LBAs_Written 0x0000 100 253 000 Old_age Offline - 23443981768 242 Total_LBAs_Read 0x0000 100 253 000 Old_age Offline - 52198843707 SMART Error Log Version: 1 No Errors Logged SMART Self-test log structure revision number 1 Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Short offline Completed without error 00% 93 - # 2 Short offline Completed without error 00% 93 - SMART Selective self-test log data structure revision number 1 SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS 1 0 0 Not_testing 2 0 0 Not_testing 3 0 0 Not_testing 4 0 0 Not_testing 5 0 0 Not_testing Selective self-test flags (0x0): After scanning selected spans, do NOT read-scan remainder of disk. If Selective self-test is pending on power-up, resume after 0 minute delay.
December 5, 201213 yr Here is my smart report, looks OK to me what do you think? looks good to me too.
December 5, 201213 yr Author I just assigned my old 2TB parity drive to be a data drive, how long till unraid comes back up? I didn't think I had to preclear it but unraid says it's clearing it.
December 5, 201213 yr I am going through the same process and also curious about this. When swapping out a 2TB parity drive for a 3TB drive, will it save downtime to preclear the 2TB drive again before adding it back to the array as a data disk? Can the old 2TB drive remain connected to the same SATA slot if I just choose the newly installed 3TB drive as parity after stopping the array, or does it need to be physically removed and replaced with the 3TB drive?
December 5, 201213 yr I am going through the same process and also curious about this. When swapping out a 2TB parity drive for a 3TB drive, will it save downtime to preclear the 2TB drive again before adding it back to the array as a data disk?No, and yes. The preclear process will take the same time or much longer than the clearing process that the array automatically performs if it doesn't find a valid preclear signature on the disk, but the array is offline during the stock clear, and preclear can be run without taking the array offline.Can the old 2TB drive remain connected to the same SATA slot if I just choose the newly installed 3TB drive as parity after stopping the array?Yes, SATA ports or hotswap bays do not in any way correspond to array slot assignments.
Archived
This topic is now archived and is closed to further replies.