ipreferpie 0 Posted November 10 Hi, after a kernel panic and a hard reset, I conducted a BTRFS scrub on my RAID1 cache pool. What I got were 4 uncorrectable errors. I deleted the docker.img and conducted SMART tests on both SSDs without issue. But upon running the scrub again, I still get the same 4 errors. I'm not sure if it's a hardware problem and how I should proceed to fix this. Below are the logs and attached is the diagnostics. Many thanks. Cache 1: Nov 10 16:13:09 HK-HomeLab kernel: BTRFS warning (device dm-10): checksum error at logical 530594066432 on dev /dev/mapper/sdn1, physical 458653364224, root 5, inode 118530799, offset 28672, length 4096, links 1 (path: appdata/binhex-plexpass/Plex Media Server/Metadata/TV Shows/2/902b34d01d1d00699de74ef41aa4a378087be30.bundle/Contents/com.plexapp.agents.thetvdb/seasons/5/episodes/13/thumbs/66948d605b6a303889512aaaad8668cb4b5d7106) Nov 10 16:13:09 HK-HomeLab kernel: BTRFS error (device dm-10): bdev /dev/mapper/sdn1 errs: wr 0, rd 0, flush 0, corrupt 3, gen 0 Nov 10 16:13:09 HK-HomeLab kernel: BTRFS error (device dm-10): unable to fixup (regular) error at logical 530594066432 on dev /dev/mapper/sdn1 Nov 10 16:13:09 HK-HomeLab kernel: BTRFS warning (device dm-10): checksum error at logical 530594070528 on dev /dev/mapper/sdn1, physical 458653368320, root 5, inode 118530799, offset 32768, length 4096, links 1 (path: appdata/binhex-plexpass/Plex Media Server/Metadata/TV Shows/2/902b34d01d1d00699de74ef41aa4a378087be30.bundle/Contents/com.plexapp.agents.thetvdb/seasons/5/episodes/13/thumbs/66948d605b6a303889512aaaad8668cb4b5d7106) Nov 10 16:13:09 HK-HomeLab kernel: BTRFS error (device dm-10): bdev /dev/mapper/sdn1 errs: wr 0, rd 0, flush 0, corrupt 4, gen 0 Nov 10 16:13:09 HK-HomeLab kernel: BTRFS error (device dm-10): unable to fixup (regular) error at logical 530594070528 on dev /dev/mapper/sdn1 Cache 2: Nov 10 15:59:58 HK-HomeLab kernel: BTRFS warning (device dm-10): checksum error at logical 530594066432 on dev /dev/mapper/sdd1, physical 36651855872, root 5, inode 118530799, offset 28672, length 4096, links 1 (path: appdata/binhex-plexpass/Plex Media Server/Metadata/TV Shows/2/902b34d01d1d00699de74ef41aa4a378087be30.bundle/Contents/com.plexapp.agents.thetvdb/seasons/5/episodes/13/thumbs/66948d605b6a303889512aaaad8668cb4b5d7106) Nov 10 15:59:58 HK-HomeLab kernel: BTRFS error (device dm-10): bdev /dev/mapper/sdd1 errs: wr 0, rd 0, flush 0, corrupt 7, gen 0 Nov 10 15:59:58 HK-HomeLab kernel: BTRFS error (device dm-10): unable to fixup (regular) error at logical 530594066432 on dev /dev/mapper/sdd1 Nov 10 15:59:58 HK-HomeLab kernel: BTRFS warning (device dm-10): checksum error at logical 530594070528 on dev /dev/mapper/sdd1, physical 36651859968, root 5, inode 118530799, offset 32768, length 4096, links 1 (path: appdata/binhex-plexpass/Plex Media Server/Metadata/TV Shows/2/902b34d01d1d00699de74ef41aa4a378087be30.bundle/Contents/com.plexapp.agents.thetvdb/seasons/5/episodes/13/thumbs/66948d605b6a303889512aaaad8668cb4b5d7106) Nov 10 15:59:58 HK-HomeLab kernel: BTRFS error (device dm-10): bdev /dev/mapper/sdd1 errs: wr 0, rd 0, flush 0, corrupt 8, gen 0 Nov 10 15:59:58 HK-HomeLab kernel: BTRFS error (device dm-10): unable to fixup (regular) error at logical 530594070528 on dev /dev/mapper/sdd1 hk-homelab-diagnostics-20191110-0837.zip Quote Share this post Link to post
johnnie.black 2141 Posted November 11 If there are uncorrectable errors you should backup cache data, reformat and restore data Quote Share this post Link to post
ipreferpie 0 Posted November 12 15 hours ago, johnnie.black said: If there are uncorrectable errors you should backup cache data, reformat and restore data thanks! so basically, can I 1) move my files on to the array, 2) take the pair of cache drives offline, 3) format, 4) then reintroduce it back as new cache drives, 5) move the data back from array to cache? Quote Share this post Link to post
johnnie.black 2141 Posted November 12 Yep, to format you don't need to offline the cache devices, once data is moved just wipe both with: blkdiscard /dev/sdX Quote Share this post Link to post
ipreferpie 0 Posted November 12 7 hours ago, johnnie.black said: Yep, to format you don't need to offline the cache devices, once data is moved just wipe both with: blkdiscard /dev/sdX got! thanks Quote Share this post Link to post
ipreferpie 0 Posted November 13 so I gave it a try, but I got: BLKDISCARD ioctl failed: Remote I/O error should I take it offline and run BLKDISCARD again? Quote Share this post Link to post
johnnie.black 2141 Posted November 13 That means the controllers where the SSDs are connected doesn't support trim. Quote Share this post Link to post
ipreferpie 0 Posted November 13 got it, thanks! reformatted and all looks good again after a scrub Quote Share this post Link to post
