Am Donnerstag, 26. Januar 2012 schrieben Sie: > Hi, > > I'm using nilfs2 for the root filesystem on an ARM-based netbook > (Toshiba ac100) with Debian hardfloat. Custom kernel is based on 3.0.8 > and nilfs-tools is 2.1.0-1 from the Debian repository. > > I wanted to try the threaded i/o test from the Phoronix test suite and > somehow it happened that during the test the garbage collecting daemon > failed and never came back. So i got the filesystem 100% full and > after i noticed it i tried running the daemon manually. It didn't > start even after reboot. Suprisingly, the eMMC error went away on its > own after fully powering off the whole device, and after that the > daemon started to work properly. > > I'm not sure what conclusion might be made from this but i'd still > appreciate any comments, especially the suggestions on what to do if > the error didn't "recover". > > The relevant dmesg excerpts (full might be available from > http://paulfertser.info/files/failing_emmc.txt ): > > [ 2.837036] mmc0: new high speed MMC card at address 0001 > [ 2.847637] mmcblk0: mmc0:0001 MMC32G 29.8 GiB > ... > [ 5668.706475] mmcblk0: retrying using single block read > [ 5671.580366] mmcblk0: error -110 transferring data, sector 15563278, > nr 122, card status 0x200900 [ 5671.603701] end_request: I/O error, > dev mmcblk0, sector 15563278 [ 5674.421016] mmcblk0: error -110 > transferring data, sector 15563279, nr 121, card status 0x200900 [ > 5674.445322] end_request: I/O error, dev mmcblk0, sector 15563279 [ > 5674.466988] NILFS: GC failed during preparation: cannot read source > blocks: err=-5 ... Well I think thats clear: Thats an I/O error when trying to access the MMC flash. I think the cleaner shouldn´t hang on it, but aside from that I do not see a NILFS issue here. As to the exact nature of the MMC error I have no idea. Maybe searching for parts of the dmesg message does help. I have I/O errors sometimes with the internal card reader on my ThinkPad T520 with Kingston Ultimate SD cards which work perfectly well with an external USB card reader. I reported these to bugzilla.kernel.org after I noticed that some similar sounding issue was reported there as well. So I recommend checking whether this might be a known issue with the mmc driver in the Linux kernel. -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7 -- To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
