patricia1066
October 18th, 2015, 04:28 PM
I installed Ubuntu server 14.04 on a new Dell T20 Poweredge, using USB live created on my mac using dd.
I usually install linux legacy mode when using USB, so I chose this as the sole OS on the server machine. Now I realise I cannot get AHCI which has advantages in monitoring the server remotely.
I have a backup of Webmin but could lose the Mac time machine on the drive /dev/sda1, so hope I wont have to reinstall with loss of data.
My brand new drive is showing errors, and worse, today fdisk shows that the drive doesnt contain a valid partition table. Yesterday this test was fine, but that was before I tried to change to UEFI, and it failed to boot. I saw this post with instructions on changing from Legacy to UEFI.
http://askubuntu.com/questions/509423/which-commands-to-convert-a-ubuntu-bios-install-to-efi-uefi-without-boot-repair
Is this relevant to me, and as my 1TB drive is one of 4 drives is AHCI useful enough to risk my backups? I want to install 16GB RAM and run
Ubuntu server with Snapraid.
My configuration:
Dell Poweredge T20
Intel(R) Xeon(R) CPU E3-1223 v3 @ 2.60GHz
4GB RAM,
Ubuntu Server 14.04.3
Postfix, Webmin 7.3
RAID Yes, but Disks are non-RAID at present
serverpat@DU:~$ sudo fdisk -l /dev/sda1
Disk /dev/sda1: 996.0 GB, 996004593664 bytes
255 heads, 63 sectors/track, 121090 cylinders, total 1945321472 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/sda1 doesn't contain a valid partition table
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000b 100 100 016 Pre-fail Always - 0
2 Throughput_Performance 0x0004 142 142 000 Old_age Offline - 69
3 Spin_Up_Time 0x0007 126 126 024 Pre-fail Always - 182 (Average 182)
4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 50
5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0
7 Seek_Error_Rate 0x000a 100 100 000 Old_age Always - 0
8 Seek_Time_Performance 0x0004 113 113 000 Old_age Offline - 35
9 Power_On_Hours 0x0012 100 100 000 Old_age Always - 101
10 Spin_Retry_Count 0x0012 100 100 000 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 50
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 51
193 Load_Cycle_Count 0x0012 100 100 000 Old_age Always - 51
194 Temperature_Celsius 0x0002 148 148 000 Old_age Always - 37 (Min/Max 17/42)
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0
197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 0
240 Head_Flying_Hours 0x0012 100 100 000 Old_age Always - 101
241 Total_LBAs_Written 0x0012 100 100 000 Old_age Always - 1539795734
242 Total_LBAs_Read 0x0012 100 100 000 Old_age Always - 552033503
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% 99 -
# 2 Short offline Completed without error 00% 2 -
I usually install linux legacy mode when using USB, so I chose this as the sole OS on the server machine. Now I realise I cannot get AHCI which has advantages in monitoring the server remotely.
I have a backup of Webmin but could lose the Mac time machine on the drive /dev/sda1, so hope I wont have to reinstall with loss of data.
My brand new drive is showing errors, and worse, today fdisk shows that the drive doesnt contain a valid partition table. Yesterday this test was fine, but that was before I tried to change to UEFI, and it failed to boot. I saw this post with instructions on changing from Legacy to UEFI.
http://askubuntu.com/questions/509423/which-commands-to-convert-a-ubuntu-bios-install-to-efi-uefi-without-boot-repair
Is this relevant to me, and as my 1TB drive is one of 4 drives is AHCI useful enough to risk my backups? I want to install 16GB RAM and run
Ubuntu server with Snapraid.
My configuration:
Dell Poweredge T20
Intel(R) Xeon(R) CPU E3-1223 v3 @ 2.60GHz
4GB RAM,
Ubuntu Server 14.04.3
Postfix, Webmin 7.3
RAID Yes, but Disks are non-RAID at present
serverpat@DU:~$ sudo fdisk -l /dev/sda1
Disk /dev/sda1: 996.0 GB, 996004593664 bytes
255 heads, 63 sectors/track, 121090 cylinders, total 1945321472 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/sda1 doesn't contain a valid partition table
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000b 100 100 016 Pre-fail Always - 0
2 Throughput_Performance 0x0004 142 142 000 Old_age Offline - 69
3 Spin_Up_Time 0x0007 126 126 024 Pre-fail Always - 182 (Average 182)
4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 50
5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0
7 Seek_Error_Rate 0x000a 100 100 000 Old_age Always - 0
8 Seek_Time_Performance 0x0004 113 113 000 Old_age Offline - 35
9 Power_On_Hours 0x0012 100 100 000 Old_age Always - 101
10 Spin_Retry_Count 0x0012 100 100 000 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 50
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 51
193 Load_Cycle_Count 0x0012 100 100 000 Old_age Always - 51
194 Temperature_Celsius 0x0002 148 148 000 Old_age Always - 37 (Min/Max 17/42)
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0
197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 0
240 Head_Flying_Hours 0x0012 100 100 000 Old_age Always - 101
241 Total_LBAs_Written 0x0012 100 100 000 Old_age Always - 1539795734
242 Total_LBAs_Read 0x0012 100 100 000 Old_age Always - 552033503
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% 99 -
# 2 Short offline Completed without error 00% 2 -