Date: Thu, 31 May 2012 13:46:36 +0200 From: Polytropon <freebsd@edvax.de> To: dmitry@zhigulinet.ru Cc: freebsd-questions@freebsd.org Subject: Re: fsck on a mounted fs as read-only Message-ID: <20120531134636.e070cef2.freebsd@edvax.de> In-Reply-To: <546749752.20120531141933@zhigulinet.ru> References: <546749752.20120531141933@zhigulinet.ru>
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On Thu, 31 May 2012 14:19:33 +0400, dmitry@zhigulinet.ru wrote: > Good afternoon. > Could not tell whether you can run fsck on checking mounted > file system as read-only, if prior to that with which the parameters > > > ftp # mount > ... > / dev/aacd0 on / var / ftp (ufs, NFS exported, local, read-only) > > Launched with these parameters and this is what gives > > ftp # fsck -yf / dev/aacd0 > ** / Dev/aacd0 (NO WRITE) > ** Last Mounted on / var / ftp > ** Phase 1 - Check Blocks and Sizes > > As I understand it does not fix the fsck filesystem. Correct. For file system modifications the file system may not be mounted because "lower level operations" maybe will take place. In your current setting, only checks will be performed, but _if_ something needs to be modified, it will not happen. The reason: It _might_ affect the file system to change, even if it's "just" in read-only state. Solution: Unmount the file system and re-run fsck. -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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