Ruthalas Posted March 11, 2018 Share Posted March 11, 2018 (edited) I am having an issue where one disk in my array generates the error, "Unmountable: No file system". It started after I set my array up to spin down, and discovered I couldn't get it to spin up again. I stopped the array, turned off automatic spin down, and when I started the array this disk would no longer mount. (I don't know if that is useful information, but it is the sequence of events that happened immediately prior to the issue with the disk.) I have done the following to troubleshoot so far (following the wiki): Noted that the drive is XFS Started array in Maintenance Mode Ran the '-nv' command in the 'Check Filesystem Status' tab for the disk in questionThese are the results. I am new to unRAID, and while I have perused some other threads regarding similar issues, I am a little unsure what exactly I should do next. I see that there is a repair command (xfs_repair), and there is an option to rebuild this disk from the parity. Which of those is most likely to preserve the data, or which should I attempt first? (And do the results of the verbose test help guide that decision?) Thank you for your help! (I have attached the recommended diagnostics dump. Not sure if it's helpful for this, but the stickied post told me to.) markus-pc-diagnostics-20180311-1348.zip Edited March 29, 2018 by Ruthalas Quote Link to comment
JorgeB Posted March 11, 2018 Share Posted March 11, 2018 10 minutes ago, Ruthalas said: Ran the '-nv' command in the 'Check Filesystem Status' tab for the disk in question Remove the n flag (no modify) and run it again, you might need to use -L but only if asked. 1 Quote Link to comment
Ruthalas Posted March 11, 2018 Author Share Posted March 11, 2018 (edited) 5 minutes ago, johnnie.black said: Remove the n flag (no modify) and run it again, you might need to use -L but only if asked. When run without the 'n' flag, I receieve the following: Phase 1 - find and verify superblock... - block cache size set to 223488 entries Phase 2 - using internal log - zero log... zero_log: head block 2114237 tail block 2112510 ERROR: The filesystem has valuable metadata changes in a log which needs to be replayed. Mount the filesystem to replay the log, and unmount it before re-running xfs_repair. If you are unable to mount the filesystem, then use the -L option to destroy the log and attempt a repair. Note that destroying the log may cause corruption -- please attempt a mount of the filesystem before doing this. Should I now run it with the 'L' flag? (Like this: -v -L?) Edited March 11, 2018 by Ruthalas Removed incorrect syntactical highlighting from code block. Quote Link to comment
JorgeB Posted March 11, 2018 Share Posted March 11, 2018 1 minute ago, Ruthalas said: Should I now run it with the 'L' flag? (Like this: -v -L?) Yes, you can also use -vL 1 Quote Link to comment
Ruthalas Posted March 11, 2018 Author Share Posted March 11, 2018 Thank you. I have started that, and will report back. Quote Link to comment
Ruthalas Posted March 11, 2018 Author Share Posted March 11, 2018 That command has complete with these results. Should I stop and restart the array (out of maintenance mode)? Quote Link to comment
Ruthalas Posted March 11, 2018 Author Share Posted March 11, 2018 Thank you! It looks like I am back up and running. One question though- Shouldn't I be able to access the data (via the parity disk), even if that drive is down? Quote Link to comment
trurl Posted March 11, 2018 Share Posted March 11, 2018 4 minutes ago, Ruthalas said: Thank you! It looks like I am back up and running. One question though- Shouldn't I be able to access the data (via the parity disk), even if that drive is down? The drive wasn't down, it just had a corrupt filesystem. Even if you removed the disk and tried to access the emulated disk, it would still be a corrupt filesystem, and so unmountable. So, that is the answer to your previous question about whether rebuilding from parity would be a possible fix. It wouldn't. 1 Quote Link to comment
Jimmy90 Posted January 8, 2020 Share Posted January 8, 2020 On 3/11/2018 at 5:46 PM, johnnie.black said: Yes. Dear johnnie.black, You're a Life Saver! This thread made my day! I had honestly been pulling my hair for 2 whopping days here with this! Thanks a Bunch! Quote Link to comment
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