Re: Reduced data availability: 3 pgs inactive, 3 pgs down

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When you get the cluster healthy, redeploy those Filestore OSDs as BlueStore.  Not before.  


Does you r pool have size=3, min_size=3?  Is this a replicated pool? Or EC 2,1?

Don’t mark lost, there are things we can do.  I don’t want to suggest anything until you share the above info.  

> On Oct 13, 2024, at 10:00 AM, Shain Miley <SMiley@xxxxxxx> wrote:
> 
> Hello,
> 
> I am seeing the following information after reviewing ‘ceph health detail’:
> 
> [WRN] PG_AVAILABILITY: Reduced data availability: 3 pgs inactive, 3 pgs down
> 
>    pg 0.1a is down, acting [234,35]
> 
>    pg 0.20 is down, acting [226,267]
> 
>    pg 0.2f is down, acting [227,161]
> 
> 
> When I query each of those pgs I see the following message on each of them:
> 
>  "peering_blocked_by": [
> 
>                {
> 
>                    "osd": 233,
> 
>                    "current_lost_at": 0,
> 
>                    "comment": "starting or marking this osd lost may let us proceed"
> 
>                }
> 
> 
> Osd.233 crashed a while ago and when I try to start it the log shows some sort of issue with the filesystem:
> 
> 
> ceph version 15.2.13 (c44bc49e7a57a87d84dfff2a077a2058aa2172e2) octopus (stable)
> 
> 1: (()+0x12980) [0x7f2779617980]
> 
> 2: (gsignal()+0xc7) [0x7f27782c9fb7]
> 
> 3: (abort()+0x141) [0x7f27782cb921]
> 
> 4: (ceph::__ceph_abort(char const*, int, char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)+0x1b2) [0x556ebe773ddf]
> 
> 5: (FileStore::_do_transaction(ceph::os::Transaction&, unsigned long, int, ThreadPool::TPHandle*, char const*)+0x62b3) [0x556ebebe2753]
> 
> 6: (FileStore::_do_transactions(std::vector<ceph::os::Transaction, std::allocator<ceph::os::Transaction> >&, unsigned long, ThreadPool::TPHandle*, char const*)+0x48) [0x556ebebe3f38]
> 
> 7: (JournalingObjectStore::journal_replay(unsigned long)+0x105a) [0x556ebebfc56a]
> 
> 8: (FileStore::mount()+0x438a) [0x556ebebda82a]
> 
> 9: (OSD::init()+0x4d1) [0x556ebe80fdc1]
> 
> 10: (main()+0x3f8c) [0x556ebe77ad2c]
> 
> 11: (__libc_start_main()+0xe7) [0x7f27782acbf7]
> 
> 12: (_start()+0x2a) [0x556ebe78fc4a]
> 
> NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.
> 
> 
> 
> 
> 
> At this point I am thinking about either running an xfs repair on osd.233 and trying to see if I can get it back up (once the pgs are healthy again I would likey zap/readd or replace the drive).
> 
> 
> 
> Another option it sounds like is to mark the osd as lost.
> 
> 
> 
> I am just looking for advice on what exactly I should do next to try to minimize the chances of any data loss.
> 
> Here is the query output for each of those pgs:
> https://pastebin.com/YbfnpZGC
> 
> 
> 
> Thank you,
> 
> Shain
> 
> 
> 
> 
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