=========================================================================== Patrick DUPRÉ | | email: pdupre@xxxxxxx Laboratoire de Physico-Chimie de l'Atmosphère | | Université du Littoral-Côte d'Opale | | Tel. (33)-(0)3 28 23 76 12 | | Fax: 03 28 65 82 44 189A, avenue Maurice Schumann | | 59140 Dunkerque, France =========================================================================== > Sent: Wednesday, January 28, 2015 at 11:47 PM > From: "Robert Nichols" <rnicholsNOSPAM@xxxxxxxxxxx> > To: users@xxxxxxxxxxxxxxxxxxxxxxx > Subject: Re: CurrentPendingSector > > On 01/28/2015 03:14 PM, Kevin Cummings wrote: > > On 01/28/2015 04:06 PM, Patrick Dupre wrote: > >> Hello, > >> > >> I get: > >> Device: /dev/sdc [SAT], 1 Currently unreadable (pending) sectors > >> > >> How can I manage this issue? > > > > Buy a new disk drive? Seriously, pending sectors are disk write errors > > and the disk has run out of "extra" blocks to write/re-map them to. The > > error occurs later when you later attempt to read from them. It is a > > sign that the disk is is on its way out. > > Quote from the FAQ at http://www.smartmontools.org/wiki/FAQ : > > "Normally when an uncorrectable sector is found, the disk puts this > onto a 'pending sector list' to indicate that it should be replaced > with a spare good sector. However this replacement won't take place > until either the disk can read the data on the bad sector, or is > instructed to write new data to that bad sector." > > Pay attention to the "However ...". First, if you can, look at the > overall health of the drive by running "smartctl -A /dev/sdc". > Attributes 5 (Reallocated_Sector_Ct) and 197 (Current_Pending_Sector) > are of interest. If the RAW_VALUE numbers for either of those is not > small, it's time to replace the drive. > The result is: 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 0x0005 122 122 054 Pre-fail Offline - 147 3 Spin_Up_Time 0x0007 113 113 024 Pre-fail Always - 208 (Average 199) 4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 1326 5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0 7 Seek_Error_Rate 0x000b 100 100 067 Pre-fail Always - 0 8 Seek_Time_Performance 0x0005 134 134 020 Pre-fail Offline - 33 9 Power_On_Hours 0x0012 099 099 000 Old_age Always - 7046 10 Spin_Retry_Count 0x0013 100 100 060 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 1326 192 Power-Off_Retract_Count 0x0032 099 099 000 Old_age Always - 1522 193 Load_Cycle_Count 0x0012 099 099 000 Old_age Always - 1522 194 Temperature_Celsius 0x0002 253 253 000 Old_age Always - 22 (Min/Max 9/39) 196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0 197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 1 198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 0 > If those numbers _are_ small, the Bad Block HOWTO at > http://smartmontools.sourceforge.net/badblockhowto.html has instructions > for locating and fixing sectors that are pending reallocation. If there > are more than a handful of pending sectors, you probably won't want to > go through that fairly tedious procedure for each one. In that case you > can back up all the data that is recoverable and simply overwrite the > whole drive with zeros to get all those sectors reallocated. > > If you continue to get new pending sectors or if the number of > reallocated sectors continues to increase, then the drive should be > replaced. SMART won't declare the drive as failing or near failing until > it _has_used up nearly all its spare sectors, and by then it is long > past the time it should have been replaced. > > -- > Bob Nichols "NOSPAM" is really part of my email address. > Do NOT delete it. > > -- > users mailing list > users@xxxxxxxxxxxxxxxxxxxxxxx > To unsubscribe or change subscription options: > https://admin.fedoraproject.org/mailman/listinfo/users > Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct > Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines > Have a question? Ask away: http://ask.fedoraproject.org > -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
