![]() That’s fine, it means that the disk is still usable. That’s good.Īfter that, we read that the “SMART overall-health self-assessment test result” is “PASSED”. ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUEġ Raw_Read_Error_Rate 0x002f 100 100 051 Pre-fail Always - 46Ģ Throughput_Performance 0x0026 252 252 000 Old_age Always - 0ģ Spin_Up_Time 0x0023 090 090 025 Pre-fail Always - 3158Ĥ Start_Stop_Count 0x0032 078 078 000 Old_age Always - 22556ĥ Reallocated_Sector_Ct 0x0033 252 252 010 Pre-fail Always - 0įirst, the “start of information section” informs us that SMART support is available and enabled. Vendor Specific SMART Attributes with Thresholds: SMART Attributes Data Structure revision number: 16 Recommended polling time: ( 215) minutes. SMART overall-health self-assessment test result: PASSED SMART support is: Available - device has SMART capability. SATA Version is: SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s) Sector Sizes: 512 bytes logical, 4096 bytes physicalĭevice is: In smartctl database ĪTA Version is: ATA8-ACS T13/1699-D revision 6 Model Family: Seagate Samsung SpinPoint M8 (AF) Since smartctl is very verbose, we’ve filtered the following output to highlight the most relevant information: # smartctl -all /dev/sdc Looking for the same information on a virtual disk does not make sense, and it’s not possible. Let’s see an example using the –all flag, which prints all SMART information about a physical disk. Attribute individualism is important because drive architectures vary from model to model. SMART technology includes a series of attributes or diagnostics chosen for each drive model. The difference between NAME and KNAME is that the former indicates the device name, while the latter means the internal kernel device name. This tree-like view of partitions is quite intuitive. In this case, /dev/sda contains an LVM with encrypted partitions. Then, for each disk, we can list its partitions with lsblk, for example: $ lsblk /dev/sda -o NAME,KNAME,FSTYPE,MOUNTPOINT,SIZE The detailed information provided by lshw helps us not to be mistaken. ![]() ![]() First, let’s identify the disks via lshw: # lshw -class disk There are several methods to find all storage devices. Let’s look at some examples: /dev/hd, /dev/sd, /dev/vd, /dev/nst*, /dev/sg*, /dev/twe, and so on. It’s probably out of spares (you’ll see this with smartctl -A) or about to fail.In the rest of this tutorial, we need to know which device files identify our disks and their partitions. If bad sectors are not being mapped out then the drive needs to be replaced immediately. If you have large numbers of pending bad sectors then you’ll need to identify them and write zeros to them to allow the drive to fix or map them out (perfectly sectors can get marked as pending due to vibration issues, amongst other things).īadblocks -svn will do this (unmount the partition first!), or if the partition is trashable/part of a raidset, hdparm –repair-sector and then rescan/reformat afterwards. Take note of smartctl -A /dev/drive returns – in particular the bad sector (mapped out sectors) and pending sectors (probably bad but not mapped out) values – if the bad sector normalised value (not the raw value) is below the threshold then you need to replace the drive – NOW. You can force the issue by wirting 0x00 to the sector (or use hdparm–repair-sector) The ONLY reason you should ever create a bad blocks table is to send commands to the drivbe to tell it to repair the sectorsĪTA and scsi drives are supposed to map out bad blocks. ![]() ![]() Note : Before running e2fsck command, you just make sure the drive is not mounted.įor any further help on badblocks & e2fsck command, read their respective man pages $ man badblocksĪlso Read: Monitor and Analyze Hard Drive Health with Smartctl in Linux Run the following e2fsck command $ sudo e2fsck -l /tmp/bad-blocks.txt /dev/sdb Once the scanning is completed, if the bad sectors are reported then use file “bad-blocks.txt” with e2fsck command and force OS not to use these bad blocks for storing data. Step 3) Inform OS not to use bad blocks for storing data When we execute above command a text file “bad-blocks” will be created under /tmp, which will contains all bad blocks. Just replace “/dev/sdb” with your own hard disk / partition. Example is shown below $ sudo badblocks -v /dev/sdb > /tmp/bad-blocks.txt Once you identify the hard disk then run badblocks command. $ sudo fdisk -l Step 2) Scan hard drive for Bad Sectors or Bad Blocks Identify the disk which you want to scan for bad blocks. Run fdisk command to list all available hard disks to Linux operating system. Step 1) Use fdisk command to identify hard drive info ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |