Hello Matthias, > I have a ~10TB ocfs2 filesystem in a 8-node cluster. This sits on a > logical volume (I know lv is not cluster aware, but I make sure no one > touches the lv, while the cluster is running). The LV consists of 5x2TB > multipath devices.
> So I ran fsck.ocfs2 -f. But it hangs forever (>12h) with this output: > > fsck.ocfs2 1.4.4 > Checking OCFS2 filesystem in /dev/mapper/lv0: > Label: <NONE> > UUID: F27D7B8F7127436981A2B5D1C93FB204 > Number of blocks: 2684349440 > Block size: 4096 > Number of clusters: 2684349440 > Cluster size: 4096 > Number of slots: 16 > > /dev/mapper/lv0 was run with -f, check forced. > Pass 0a: Checking cluster allocation chains I wrote to the list about what probably was the same problem in April. You can access the thread here: http://oss.oracle.com/pipermail/ocfs2-users/2011-April/005093.html Sunil wrote a few days after, explaining there was a bug in fsck that caused it to enter an infinite loop when the filesystem was bigger than some value, and that it had been corrected in version 1.6.4 . This is an excerpt of the message: > Fixed in ocfs2-tools 1.6.4. The src tarball is on oss.oracle.com. > > ================================================================== > > $ git name-rev --tags 2d741da9367b33f559802dfabe62d96f6adc7777 > 2d741da9367b33f559802dfabe62d96f6adc7777 tags/ocfs2-tools-1.6.3~33 > > ================================================================== > commit 2d741da9367b33f559802dfabe62d96f6adc7777 > Author: Goldwyn Rodrigues <rgold...@gmail.com> > Date: Mon Jul 26 15:19:25 2010 -0500 > > fsck.ocfs2: Change local variable datatype to avoid infinite loop > > fsck on large filesystems goes in an infinite loop. > The problem is in verify_bitmap_descs(). i, a local variable is > declared as uint16_t and is compared with > ocfs2_cluster_group_sizes.cgs_cluster_groups which is uint32_t. > When cgs_cluster_groups is greater than 65535, i overflows and wraps > > creating an infinite loop of the following: > for (i = 0, blkno = ost->ost_fs->fs_first_cg_blkno; > > i < cgs.cgs_cluster_groups; > i++, blkno = i * ocfs2_clusters_to_blocks(ost->ost_fs, > > cgs.cgs_cpg)) { So I downloaded the 1.6.4 version, compiled it by hand, and ran fsck on the 16 TB filesystem. It took a long time (maybe 4 hours), but it did finish and corrected all the errors. Hope this helps. Regards, Josep Guerrero IEEC _______________________________________________ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2-users
