On Tue, May 06, 2014 at 11:42:39AM -0400, Theodore Ts'o wrote: > On Thu, May 01, 2014 at 12:25:03PM -0400, Nathaniel W Filardo wrote: > > Here's another kernel report, this time from /dev/sda1, which is a QEMU-IDE > > view of a local LVM volume and is only 4060864 blocks big, so it falls into > > neither the "Ceph's fault" nor "8TB is special" bins: Ack, oops; my bad. So I just checked the configuration and realized that, while /dev/sda1 was in fact once upon a time a local view of LVM, it is now in Ceph. So it does eliminate the "8TB is special" bin but "Ceph's fault" is still in play. > > [922646.672586] EXT4-fs error (device sda1): ext4_mb_generate_buddy:756: group 17, 24652 clusters in bitmap, 24651 in gd; block bitmap corrupt. > > So this is a different report from the ones where we see this error: > > [817576.492468] EXT4-fs error (device vdd): ext4_mb_release_inode_pa:3729: group 59035, free 14, pa_free 12 > > Have you seen any more of these errors? I think so, yes; I recall seeing bugs in both the allocation and the free side of things, but I will keep an eye out. > > [922646.712017] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 > > [922646.712017] IP: [<ffffffffa014a7cc>] __ext4_error_inode+0x2c/0x150 [ext4] > > FYI, this BUG (which can happens after certain jbd2 errors, which in > your case happened after the journal was aborted) is fixed with commit > 66a4cb187b9 which will be in v3.15. Excellent; I look forward to the new release and will stop nagging you with these. :) --nwf;
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