On Fri, Aug 31, 2018 at 6:11 AM [email protected] <[email protected]> wrote:
>
> Hello all!
>
> I had a electric power problem. After this I have 2 incomplete pg. But all
> RBD volumes are work.
>
> But not work my CephFS. MDS load stop at "replay" state and MDS related
> commands hangs:
>
> cephfs-journal-tool journal export backup.bin - freeze;
>
> cephfs-journal-tool event recover_dentries summary - freeze (no action in
> strace);
>
> cephfs-journal-tool journal reset - freeze;
>
>
As you have noticed, you have two incomplete PGs. They are presumably
metadata PGs, and CephFS can't read or write some parts of its
metadata, so it's IOs are blocking.
You need to investigate what's going on with those PGs, and longer
term work out what about your configuration allowed an electrical
problem to damage the cluster -- look into your drive controller
configuration (do you have e.g. writeback caches without battery
backup?) etc.
John
> strace out:
>
> <unfinished ...>
> [pid 6314] <... futex resumed> ) = -1 ETIMEDOUT (Connection timed out)
> [pid 6314] futex(0x55d342eea928, FUTEX_WAKE_PRIVATE, 1) = 0
> [pid 6314] futex(0x55d342eea97c,
> FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 31, {1535692208, 64139948},
> ffffffff <unfinished ...>
> [pid 6318] <... futex resumed> ) = -1 ETIMEDOUT (Connection timed out)
> [pid 6318] futex(0x55d3430b6958, FUTEX_WAKE_PRIVATE, 1) = 0
> [pid 6318] futex(0x55d3430b6984,
> FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 33, {1535692208, 80954445},
> ffffffff <unfinished ...>
> [pid 6324] <... futex resumed> ) = -1 ETIMEDOUT (Connection timed out)
> [pid 6324] futex(0x55d3430b7758, FUTEX_WAKE_PRIVATE, 1) = 0
> [pid 6324] write(12, "c", 1) = 1
> [pid 6317] <... epoll_wait resumed> {{EPOLLIN, {u32=11, u64=11}}}, 5000,
> 30000) = 1
> [pid 6317] read(11, "c", 256) = 1
> [pid 6317] read(11, 0x7f1558c32300, 256) = -1 EAGAIN (Resource temporarily
> unavailable)
> [pid 6317] futex(0x55d3432269e0, FUTEX_WAIT_PRIVATE, 2, NULL <unfinished ...>
> [pid 6324] futex(0x55d3432269e0, FUTEX_WAKE_PRIVATE, 1) = 1
> [pid 6317] <... futex resumed> ) = 0
> [pid 6317] futex(0x55d3432269e0, FUTEX_WAKE_PRIVATE, 1) = 0
> [pid 6317] sendmsg(17, {msg_name(0)=NULL,
> msg_iov(1)=[{"\7\25\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\2\0\177\0\1\0\0\0\0\0\0\0\0\0\0"...,
> 75}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL <unfinished ...>
> [pid 6324] futex(0x55d3430b7784,
> FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 33, {1535692208, 169222622},
> ffffffff <unfinished ...>
> [pid 6317] <... sendmsg resumed> ) = 75
> [pid 6317] epoll_wait(10,
>
>
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