Thanks for valuable input. Regarding punctured block: from fwtermlog I got several (not much) lines of type:
11/13/17 3:24:45: EVT#08603-11/13/17 3:24:45: 97=Puncturing bad block on PD 02(e0x20/s2) at 9ecd T35: maintainPdFailHistory=0 disablePuncturing=0 zeroBasedEnclEnumeration=1 disableBootCLI=1 All the same PD, the same bad block (different time) Is my raid useless? BTW: why do think raid level migration to raid-6 with 2 additional disk would be better than with one disk. I would keep VD size the same. Anyway will migration too raid-6 fail with this "awful Puncturing)??? Anyway x 2: would such command work generally (assuming my VD0 (or aArray0 or L0) is raid5: megacli –LDRecon -CfgSpanAdd -r6 -Array0[32:0,32:1,32:2,32:3,32,4] -a0 (I try to figure out how to make LDRecon i.e. raid level migration with additional disk) GB 2017-11-14 17:56 GMT+01:00 Stephen Dowdy <[email protected]>: > On 11/14/2017 09:52 AM, Grzegorz Bakalarski wrote: > > I have a server (R815) with PERC H710. I have 4 disks and RAID-5 on > them. The server have 2 empty disk slots. > > > > After night I noticed 2 disks got predicted failure state - LEDs on disk > flash yellow (not green) on them (2 of them). MegaCLI shows that 2 disks > have high "Predictive Failure Count:" - some few thousands. > GB, > > *IF* this all rebuilds fine and goes Optimal again, you really want to: > > megacli fwtermlog dsply aall | grep -i punct > > If you see a punctured block, you're gonna have to back off what you can, > rebuild the RAID from scratch and restore, because there's no good way to > fix a punctured stripe. > (ignore the lines that say the controller supports puncturing). > If you have to rebuild, i'd go RAID6 with your 6 drives. > > --stephen > > > -- > Stephen Dowdy - Systems Administrator - NCAR/RAL > 303.497.2869 - [email protected] - http://www.ral.ucar.edu/~ > sdowdy/ > > _______________________________________________ > Linux-PowerEdge mailing list > [email protected] > https://lists.us.dell.com/mailman/listinfo/linux-poweredge >
_______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge
