Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Do you have any suggestions about software that will check for data corruption by continuously stress a storage ? (Like creating files, read them back, move around, renanes, deletes and so on) Il 12 ott 2017 11:15 AM, "Robert Altnoeder" <robert.altnoeder at linbit.com> ha scritto: > On 10/11/2017 11:30 PM, Eric Robinson wrote: > > The TrimTester program consists of three parts. The main executable > > (TrimTester) just writes loads of data to the drive and tests for file > > corruption. My C++ consultant says, "It writes sequential numbers > > wrapped at 256, spanning multiple files. It checks previously written > > files, and if the file data is all zeroes, it is considered to be > > corrupted." > Are you referring to this program? > https://github.com/algolia/trimtester/blob/master/trimtester.cpp > > One thing that I can tell you right away is that this program does not > appear to be very trustworthy, because it may malfunction due to the use > of incorrect datatypes for the purpose - apparently, it is attempting to > memory-map quite large files (~ 70 GiB) and check using a byte-indexed > offset declared as type 'unsigned', which is commonly only 32 bits wide, > and therefore inadequate for the byte-wise indexing of anything that is > larger than 4 GiB. > > While this indicates that the program might miss actual corruption, so > far I have not found any definitive proof that the program will generate > false positives (however, I did not check the program in much detail, > judging by the overall quality I would not be surprised if it did), so > we should still continue investigating. > > I would certainly recommend to double-check by running some other > software to check for data corruption issues to ensure that the problem > is not malfunctioning test software. > > br, > -- > Robert Altnoeder > +43 1 817 82 92 0 > robert.altnoeder at linbit.com > > LINBIT | Keeping The Digital World Running > DRBD - Corosync - Pacemaker > f / t / in / g+ > > DRBD® and LINBIT® are registered trademarks of LINBIT, Austria. > _______________________________________________ > drbd-user mailing list > drbd-user at lists.linbit.com > http://lists.linbit.com/mailman/listinfo/drbd-user > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20171012/735ee46d/attachment.htm>