Hello.
My nilfs suddenly become read-only. I saw these logs in
/var/log/messages:
Dec 19 11:20:05 localhost kernel: NILFS: bad btree node (blocknr=710153406):
level = 0, flags = 0x2, nchildren = 25088
Dec 19 11:20:05 localhost kernel: NILFS error (device sdb2):
nilfs_bmap_lookup_contig: broken bmap (inode number=321775)
Dec 19 11:20:05 localhost kernel:
Dec 19 11:20:05 localhost kernel: Remounting filesystem read-only
Dec 19 11:20:05 localhost kernel: NILFS: bad btree node (blocknr=710153406):
level = 0, flags = 0x2, nchildren = 25088
Dec 19 11:20:05 localhost kernel: NILFS error (device sdb2):
nilfs_bmap_lookup_contig: broken bmap (inode number=321775)
Dec 19 11:20:05 localhost kernel:
Dec 19 11:20:05 localhost kernel: NILFS: bad btree node (blocknr=710153406):
level = 0, flags = 0x2, nchildren = 25088
Dec 19 11:20:05 localhost kernel: NILFS error (device sdb2):
nilfs_bmap_lookup_contig: broken bmap (inode number=321775)
Dec 19 11:20:05 localhost kernel:
Dec 19 11:20:05 localhost kernel: NILFS: bad btree node (blocknr=710153406):
level = 0, flags = 0x2, nchildren = 25088
Dec 19 11:20:05 localhost kernel: NILFS error (device sdb2):
nilfs_bmap_lookup_contig: broken bmap (inode number=321775)
Dec 19 11:20:05 localhost kernel:
……………………………………………………
How can I fix this? There is 6TiB data on my disk, I don't want to
format the disk.
I found that a lot of people have encountered the same problem. Is this
a bug of nilfs? How can I avoid this problem? When it happens, I was running
multiple MySQL and rsync, and nilfs_cleanerd was cleaning segments.
Elmer Zhang--
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