P.S. needless to be said, that they eventually can reassemble damaged LVM , until LVM's metadata tables are still good enough
Il giorno 12 apr 2023, 08:39, alle ore 08:39, Roland <devz...@web.de> ha scritto: > >Controllers remap blocks all on their own and the so-called geometry >is entirely fictitious anyway > >so tell me then, why i have a shelf full with dead disks where half of >them are out of business for nothing but a couple of bad sectors ? > >i don't see the point that hardware capable storing terabytes of data >is >being put to trash, because of some <0.01% of it's sectors is defective >for this or for that reason. it's that "the vendor tells it's dead now >- so please better buy a new one" paradigm, which seems to rule >everewhere today. > >i dislike this attitude. > >if you had a self healing diving suit which quits healing itself after >the 5th small hole, would you throw that away after the 5th hole - or >would you put a patch on that? same goes for bicycle inner tubing. >there >were times, where you put patches on that because new ones where >expensive. nowadays, everbody puts them to trash and buys a new one. > >so, if some drive controller isn't able to fix your 20 broken sectors - >i'd like to fix it myself. and i'd like to try the lvm apporach, >because >i think it's a sensible way of putting some abstraction layer between >your filesystem and your rotating disks. > >and even if it's dumb to do or if it's something which will not succeed >, it's at least worth a try to show if it works or show why it can't >work - and if it doesn't work - there is at least something to learn >about lvm or dead disks. > >roland > > >Am 09.04.23 um 22:18 schrieb matthew patton: >> > my plan is to scan a disk for usable sectors and map the logical >volume >> > around the broken sectors. >> >> 1977 called, they'd like their non-self-correcting HD controller >> implementations back. >> >> From a real-world perspective there is ZERO (more like negative) >> utility to this exercise. Controllers remap blocks all on their own >> and the so-called geometry is entirely fictitious anyway. From a >> script/program "because I want to" perspective you could leave LVM >> entirely out of it and just use a file with arbitrary offsets >> scribbled with a "bad" signature. >> >> _______________________________________________ >> linux-lvm mailing list >> linux-lvm@redhat.com >> https://listman.redhat.com/mailman/listinfo/linux-lvm >> read the LVM HOW-TO athttp://tldp.org/HOWTO/LVM-HOWTO/ > > >------------------------------------------------------------------------ > >_______________________________________________ >linux-lvm mailing list >linux-lvm@redhat.com >https://listman.redhat.com/mailman/listinfo/linux-lvm >read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
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