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Raid5 won't mount with BRTFS critical


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Hi,

 

My Xpenology (DSM6.2 esxi 1.03b) crashed this morning.

I tried to restart it without success (no Synology detected by find.synology.com or Synology assistant).
I tried to mount the raid (4 disks) on a Ubuntu VM and got some errors in log.

 

Quote

[ 7461.536741] BTRFS info (device md2): using free space tree

[ 7461.536746] BTRFS info (device md2): has skinny extents

[ 7462.617091] BTRFS info (device md2): cleaning free space cache v1

[ 7462.623327] BTRFS critical (device md2): corrupt leaf: root=1 block=9930534666240 slot=5, invalid root flags, have 0x200000000 expect mask 0x1000000000001

[ 7462.623335] BTRFS error (device md2): block=9930534666240 read time tree block corruption detected

[ 7462.630193] BTRFS critical (device md2): corrupt leaf: root=1 block=9930534666240 slot=5, invalid root flags, have 0x200000000 expect mask 0x1000000000001

[ 7462.630199] BTRFS error (device md2): block=9930534666240 read time tree block corruption detected

[ 7462.630224] BTRFS: error (device md2) in btrfs_set_free_space_cache_v1_active:3878: errno=-5 IO failure

[ 7462.630271] BTRFS error (device md2): commit super ret -30

[ 7463.614183] BTRFS error (device md2): open_ctree failed

I tried many commands found on google but without success. (btrfs check, btrfs repair, ...).

Any help would be welcome.

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