Date: Wed, 20 Jun 2001 21:24:52 +0400 (MSD) From: Alexey Koptsevich <kopts@astro.ioffe.rssi.ru> To: questions@freebsd.org Subject: reviving vinum striped disc Message-ID: <Pine.BSF.4.21.0106202101470.730-100000@astro.ioffe.rssi.ru>
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Hello, Bad block occurred on one of two subdisks of a vinum volume (which consists of one striped plex). This subdisk is now marked 'stale' in vinum config. Before reboot and bad blocks reassignment only a part of disc hierarchy was out of the operation. Based on that, as well as on that only one block turned out to be bad I hope there is a chance to restore significant part of the information. The filesystem is now marked dirty and, since fsck gives errors immediately after starting, I afraid fsck may corrupt the filesystem completely if I reply 'yes' to its questions. Fsck output starts with ** /dev/vinum/data ** Last Mounted on /data ** Phase 1 - Check Blocks and Sizes CANNOT READ: BLK 512 Thus I have three questions: - how can I forcibly mark filesystem clean (in order to mount it read-only and then backup its uncorrupted part somewhere)? - can I run fsck in 'dummy' mode in order to evaluate is it possible to restore the filesystem without making actual corrections? - can I do something which gives higher possibility to restore the data than two things I mentioned above? I run FreeBSD 4.2. Thanks a lot, Alex To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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