Hi Josef, Just ping this again. Did you have any good ideas to rebuild extent tree if broken filesystem is filled with snapshots.? I was working on this recently, i was blocked that i can not verify if an extent is *FULL BACKREF* mode or not. As a *FULL BACKREF* extent's refs can be 1 and more than 1.. I am willing to test codes or have a try if you could give me some advice etc. -Wang > On 03/10/2014 11:50 PM, Josef Bacik wrote: >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >> >> On 03/10/2014 08:12 AM, Shilong Wang wrote: >>> Hi Josef, >>> >>> As i haven't thought any better ideas to rebuild extent tree which >>> contains extent that owns 'FULL BACKREF' flag. >>> >>> Considering an extent's refs can be equal or more than 1 if this >>> extent has *FULL BACKREF* flag, so we could not make sure an >>> extent's flag by only searching fs/file tree any more. >>> >>> So until now, i just disable this option if snapshots exists, >>> please correct me if i miss something here. Or you have any better >>> ideas to solve this problem.~_~ >>> >>> >> I thought the fsck stuff rebuilds full backref refs properly, does it >> not? If it doesn't we need to fix that, however I'm fine with >> disabling the option if snapshots exist for the time being. Thanks, > If there are no snapshots, --init-extent-tree can works as expected. > I just have not thought a better idea to rebuild extent tree if we do have > snapshots which means we may have an extent with *FULL BACKREF* > flag. > > Thanks, > Wang >> >> Josef >> -----BEGIN PGP SIGNATURE----- >> Version: GnuPG v1 >> Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ >> >> iQIcBAEBAgAGBQJTHd9NAAoJEANb+wAKly3BYCYP/0iTaaa7w0SnfXtgjoVyX+nT >> +e0Pa46zeKzpTujotCDb9E/2PBesCAvA4Psog3rkfsqJ2nXN9cERN4E6/JG4nAHh >> Hv4KPo+w+tCkC4U2wSoDivYrVk9G5SH25ewkgW6iheSYNIlm+PLbOQz9DzGjCFDp >> 51J9tG5E010siOyhlLCyGj8ZTj+gXuoQVWKCS8dOpCLMrbYYjMDXa562hqWaLoS/ >> t3eSfP7Tnnpl43NiMZI4fWrzmlFa5lba5iJmG59FeyiseRH4Zrhee4St1L1xDL5A >> /6f3tJJT7DJjRRJFv0nJAOvOPyFaK8bMaYmOQJg6VrhcyPKM3BxBVEab3HrmQ7jt >> LCMWobpIcM7e5BugmbTGGsFymhv05SQgvYGzpzRVXdsSzqubuqTcXwloNU5RyyFF >> sXT9IiW9wAibHe7mDN7V6nfo1bVfHsjvSVi1rqz4/zFOWyh8oqxfEhxUJIWhfFsn >> j0WJevvqKnjBJujyyuQpL13tzh69qei0AHOEme3R46BSRMnyuacy/WOeyo4VXPcn >> 0GIeWbngAIWF/quhoQGkvofRMlPgftiDge8uz9pbm3IEKeiP9dQ/HvKsIHMKjnKW >> 3dEBvMV/CSUQNek4VjO1ALefTRZQvJVL8Wxdij4W+djJw/uVX7fOhuqdkqyfM3FY >> CKSB3HUSUtDCammsvgQA >> =OT98 >> -----END PGP SIGNATURE----- >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> > -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
