Sorry for the title, I don't know the problem so I just paste the error message. I'm running on raspberry pi with 16GB Ultra SDHC Class 10 of sdcard. Every boot up, I notice this message from "dmesg"
$this->bbcode_second_pass_code('', '
[ 22.099260] EXT4-fs error (device mmcblk0p5): ext4_mb_generate_buddy:755: group 36, 11143 clusters in bitmap, 11142 in gd
')
I got no problem with the system while running, but I'm a bit worried if something would damage the sdcard. Here's the full message of "dmesg |grep mmc"
$this->bbcode_second_pass_code('', '
[ 0.000000] Kernel command line: dma.dmachans=0x7f35 bcm2708_fb.fbwidth=592 bcm2708_fb.fbheight=448 bcm2708.boardrev=0xe bcm2708.serial=0x73c7594c smsc95xx.macaddr=B8:27:EB:C7:59:4C sdhci-bcm2708.emmc_clock_freq=250000000 vc-cma-mem=0/0x11800000@0xd400000 mem=0xc400000@0x0 mem=0x11800000@0xd400000 vc_mem.mem_base=0x1ec00000 vc_mem.mem_size=0x20000000 ipv6.disable=1 avoid_safe_mode=1 selinux=0 plymouth.enable=0 smsc95xx.turbo_mode=N dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p5 rootfstype=ext4 elevator=noop rootwait
[ 2.296272] mmc0: SDHCI controller on BCM2708_Arasan [platform] using platform's DMA
[ 2.296508] mmc0: BCM2708 SDHC host at 0x20300000 DMA 2 IRQ 77
[ 2.311769] Waiting for root device /dev/mmcblk0p5...
[ 2.458654] mmc0: read SD Status register (SSR) after 11 attempts
[ 2.464539] mmc0: new high speed SDHC card at address e624
[ 2.476281] mmcblk0: mmc0:e624 SU16G 14.8 GiB
[ 2.478643] mmcblk0: p1 p2 < p5 >
[ 6.300340] EXT4-fs (mmcblk0p5): warning: mounting fs with errors, running e2fsck is recommended
[ 6.334794] EXT4-fs (mmcblk0p5): recovery complete
[ 6.372603] EXT4-fs (mmcblk0p5): mounted filesystem with ordered data mode. Opts: (null)
[ 9.534152] FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[ 22.099260] EXT4-fs error (device mmcblk0p5): ext4_mb_generate_buddy:755: group 36, 11143 clusters in bitmap, 11142 in gd
[ 22.117100] JBD2: Spotted dirty metadata buffer (dev = mmcblk0p5, blocknr = 0). There's a risk of filesystem corruption in case of system crash.
[ 306.417432] EXT4-fs (mmcblk0p5): error count: 421
[ 306.417467] EXT4-fs (mmcblk0p5): initial error at 234: ext4_mb_generate_buddy:755
[ 306.417487] EXT4-fs (mmcblk0p5): last error at 22: ext4_mb_generate_buddy:755
')