Hi list, On April 20th, 2014 there was a thread on this list w. Nathanial W Filardo, Theodore Tso and myself about ext4 metadata corruption on large ext4 volumes. See http://marc.info/?l=linux-ext4&m=139878494527370&w=2 and further messages from the archives. A bit of debugging was done, i fell out of that loop as my problems seemed to have disappeared with further kernel updates from my distro, but recently these issues seem to have re-appeared (or they never went away and i just didn't hit this specific bug-trigger-situation?). Again i'm getting sporadic fs errors like this most recent one: (More of these i've pasted at https://8n1.org/10745/cc34) | [000d00h01m43s] EXT4-fs error (device vdb): ext4_mb_generate_buddy:757: | group 79842, block bitmap and bg descriptor inconsistent: 10073 vs 10071 | free clusters | [000d00h01m43s] Aborting journal on device vdb-8. An e2fsck run shows: | Pass 5: Checking group summary information | Block bitmap differences: +(2616281446--2616281447) | Fix? yes | | Free blocks count wrong (170942497, counted=129906218). | Fix? yes | | Free inodes count wrong (670863012, counted=670860975). | Fix? yes My setup is largely the same, storage wise. Updated kernels here and there, and the storage device /dev/vdb has grown to 10TiB which i still use unpartitioned in this VM. The VM is now running 3.19.0-25-generic #26-Ubuntu SMP Fri Jul 24 21:17:31 UTC 2015 x86_64 I'm able and willing to run patched kernels to trace this further. Please advise. With regards, -Sander. -- | > > Isn't this a stupid question? | > Isn't this a stupid answer? | No, it was another stupid question. This is the stupid answer. | 4096R/20CC6CD2 - 6D40 1A20 B9AA 87D4 84C7 FBD6 F3A9 9442 20CC 6CD2 -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html