On Sun, May 8, 2016 at 11:18 PM, Nikolaus Rath <nikol...@rath.org> wrote: > Hello, > > I just created an innocent 10 MB on a btrfs file system, yet my attempt > to read it a few seconds later (and ever since), just gives: > > $ ls -l in-progress/mysterious-io-error > -rw-rw-r-- 1 nikratio nikratio 10485760 May 8 14:41 > in-progress/mysterious-io-error > $ cat in-progress/mysterious-io-error > cat: in-progress/mysterious-io-error: Input/output error
If you unmount and mount again the filesystem, does it happen again? How did you create the file? Does fsck reports any issues? > > I was hoping the kernel might tell me a little more about this, but: > > $ dmesg | tail -3 > [ 48.982851] wlan0: RX AssocResp from 00:1f:33:be:9a:c4 (capab=0x411 > status=0 aid=3) > [ 48.983757] wlan0: associated > [ 2770.464505] kvm: zapping shadow pages for mmio generation wraparound > > > How can I find out the reason for the error? Is it a bug in BTRFS, > or somewhere else in the kernel ? Is my hardware broken? > > Kernel is Debian's 4.5.0-0.bpo.1-amd64. This is a btrfs file system on a > LVM LV backed by a bcache array with two backing devices and one caching > device. > > > Best, > -Nikolaus > > -- > GPG encrypted emails preferred. Key id: 0xD113FCAC3C4E599F > Fingerprint: ED31 791B 2C5C 1613 AF38 8B8A D113 FCAC 3C4E 599F > > »Time flies like an arrow, fruit flies like a Banana.« > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Filipe David Manana, "Reasonable men adapt themselves to the world. Unreasonable men adapt the world to themselves. That's why all progress depends on unreasonable men." -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
