Messages in this thread | | | Date | Sat, 29 May 2004 15:01:06 -0500 | From | Steve Lord <> | Subject | Re: xfs partition refuses to mount |
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Ricky Beam wrote: > On Sat, 29 May 2004, Steve Lord wrote: > >>You have turned on XFS debug, which is really a developer option. It >>looks like you have a corrupt journal though. A non debug kernel may >>still refuse to mount it and you would need to run xfs_repair from >>a rescue disk in that case. > > > Unless xfs_repair has been changed recently, all it will be able to do it > delete (zero) the journal. If it detects metadata in the journal, it'll > stop and tell you mount the filesystem to replay the journal. Personally, > I think that's sorta stupid... if I could mount the fs, I wouldn't be > running xfs_repair. (I've had the journal become spooge on a sparc64 > box a few times.)
Yes, xfs_repair will not replay a log, and if it finds dirty metadata in the log it wants you to replay it via mount. Having xfs_repair able to replay the log would be handy, but if mount cannot replay it, then repair will not either. xfs_repair -L bypasses this check and resets the log. Following that it does a complete consistancy check and fixup of metadata - it does a good job in most cases. Note that it deletes lost+found, and if you had files in there, they would be disconnected and get put back in lost+found again.
The whole reason for -L was customers who automatically ran xfs_repair after a crash, and hence threw away anything which was in the log. So it is more of a stop and think what you are doing option.
> > There should be a way to instruct the kernel's rootfs mount to not look > at the log. I don't know if one can pass any generic mount options at > boot. ("ro"/"rw" and rootfs type, but I don't know of any others.) This > would be handy for more than just xfs, btw. >
You can mount norecovery,ro - but no guarantees that it will stay up long. See Documentation/filesystems/xfs.txt for a list of xfs mount options.
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