On 2018年07月01日 09:59, Lewis Diamond wrote: > Hi, > I've been told to report this issue to this mailing list. > > sudo btrfs check --readonly /dev/sdc > Checking filesystem on /dev/sdc > UUID: 2630aec8-8399-4bd8-9397-8c04953a35d5 > checking extents > checking free space cache > there is no free space entry for 1596152365056-1596152381440 > there is no free space entry for 1596152365056-1597220323328 > cache appears valid but isn't 1596146581504 > there is no free space entry for 1613348585472-1613348618240 > there is no free space entry for 1613348585472-1614400192512 > cache appears valid but isn't 1613326450688 > block group 1645538705408 has wrong amount of free space, free space > cache has 58212352 block group has 58277888 > failed to load free space cache for block group 1645538705408 > block group 1683119669248 has wrong amount of free space, free space > cache has 52838400 block group has 52953088 > failed to load free space cache for block group 1683119669248 > btrfs: unable to add free space :-17
Your free space cache is corrupted. And if not handled well, it could (may have already) damaged your fs further. You could try "btrfs check --clear-space-cache v1 <dev>" to remove the free space cache completely and re-try "btrfs check --readonly" to see if it works. Thanks, Qu > free-space-cache.c:843: btrfs_add_free_space: BUG_ON `ret == -EEXIST` > triggered, value 1 > btrfs(+0x37337)[0x556024d5d337] > btrfs(btrfs_add_free_space+0x11d)[0x556024d5da2d] > btrfs(load_free_space_cache+0xde9)[0x556024d5e889] > btrfs(cmd_check+0x15fe)[0x556024d8b9ee] > btrfs(main+0x88)[0x556024d38768] > /usr/lib/libc.so.6(__libc_start_main+0xeb)[0x7f9382a9506b] > btrfs(_start+0x2a)[0x556024d3888a] > Aborted > > > This happened on a USB HDD duo in raid 1 which had btrfs issues > (probably due to a bad controller). One of the hdd was subsequently > dropped by a 2 year old (causing subsequent checks to crash). > > -Lewis > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >
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