(resend int text only) Some more information about this issue. I installed my system last november (arch x86_64), with kernel 3.11. That time I didn't see any csum error or "incomplete page read" error. Some time later these errors started to show up. I don't know exactly if it was in 3.11 -> 3.12 upgrade or somewhere in the 3.12 cycle. I've been using bcache in writeback mode from the beginning. I made some more testing: - tryed bcache in writethrough, writearound and none modes; - tryed linux kernel 3.13-rc5 The errors didn't go away (maybe because my filesystem is already corrupted). I didn't have time to test with kernel 3.11 again. But lately the errors increased, and it started to make my system unstable, and then unusable. I had to reformat everything and recover my backups. I don't have my / and /home in btrfs over bcache anymore, but I can make some tests in a spare HD and SSD i have here. I'll report back after Christmas. thanks, Fabio 2013/12/20 Chris Mason <clm@xxxxxx>: > On Fri, 2013-12-20 at 10:42 -0200, Fábio Pfeifer wrote: >> Hello, >> >> I put the "WARN_ON(1);" after the printk lines (incomplete page read >> and incomplete page write) in extent_io.c. >> >> here some call traces: >> >> [ 19.509497] incomplete page read in btrfs with offset 2560 and length 1536 >> [ 19.509500] ------------[ cut here ]------------ >> [ 19.509528] WARNING: CPU: 2 PID: 220 at fs/btrfs/extent_io.c:2441 >> end_bio_extent_readpage+0x788/0xc20 [btrfs]() >> [ 19.509530] Modules linked in: cdc_acm fuse iTCO_wdt >> iTCO_vendor_support snd_hda_codec_analog coretemp kvm_intel kvm raid1 >> ext4 crc16 md_mod mbcache jbd2 microcode nvidia(PO) psmouse pcspkr >> evdev serio_raw i2c_i801 lpc_ich i2c_core snd_hda_intel sky2 skge >> i82975x_edac button asus_atk0110 snd_hda_codec snd_hwdep shpchp >> snd_pcm snd_page_alloc snd_timer acpi_cpufreq snd edac_core soundcore >> processor vboxdrv(O) sr_mod cdrom ata_generic pata_acpi hid_generic >> usbhid hid usb_storage sd_mod pata_marvell firewire_ohci uhci_hcd ahci >> ehci_pci firewire_core ata_piix libahci crc_itu_t ehci_hcd libata >> scsi_mod usbcore usb_common btrfs crc32c libcrc32c xor raid6_pq bcache >> [ 19.509578] CPU: 2 PID: 220 Comm: btrfs-endio-met Tainted: P >> W O 3.12.5-1-ARCH #1 >> [ 19.509580] Hardware name: System manufacturer System Product >> Name/P5WDG2 WS Pro, BIOS 0905 03/06/2008 >> [ 19.509581] 0000000000000009 ffff880231a63cb0 ffffffff814ee37b >> 0000000000000000 >> [ 19.509585] ffff880231a63ce8 ffffffff81062bcd ffffea00085eaec0 >> 0000000000000000 >> [ 19.509587] ffff8802320cc9c0 0000000000000000 ffff880233b0e000 >> ffff880231a63cf8 >> [ 19.509590] Call Trace: >> [ 19.509596] [<ffffffff814ee37b>] dump_stack+0x54/0x8d >> [ 19.509601] [<ffffffff81062bcd>] warn_slowpath_common+0x7d/0xa0 >> [ 19.509603] [<ffffffff81062caa>] warn_slowpath_null+0x1a/0x20 >> [ 19.509614] [<ffffffffa00b7ba8>] end_bio_extent_readpage+0x788/0xc20 [btrfs] > > This should mean that bcache is either failing to read some blocks > properly or is fiddling with the bv_len/bv_offset fields. > > Could someone from bcache comment? > > -chris > -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
