Hi, On Tue, Dec 19, 2023 at 9:16 PM Huseyin Cotuk <hcotuk@xxxxxxxxx> wrote: > After comparing the first blocks of running and failed OSDs, we found that HW crash caused a corruption on the first 23 bytes of block devices. > > First few bytes of the block device of a failed OSD contains: > > 00000000: 0000 0000 0000 0000 0000 0000 0000 0000 ................ > 00000010: 0000 0000 0000 0a63 3965 6533 6566 362d .......c9ee3ef6- A small correction, just in case it might be a clue for someone to understand how it could have happened at all. As you may see, 22 bytes (not 23) were erased, i.e. "bluestore block device" safety header but not the ending "\n" (0x0a) byte which is also a part of this header. We advised to restore the full header (23 bytes) just for safety but 22 bytes would be enough too. -- Mykola Golub _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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