Date: Thu, 24 May 2012 10:04:14 +0100 From: Doug Rabson <dfr@rabson.org> To: lev@freebsd.org Cc: freebsd-current FreeBSD <freebsd-current@freebsd.org>, Steven Hartland <killing@multiplay.co.uk> Subject: Re: UFS+J panics on HEAD Message-ID: <CACA0VUgfq4WwK7FGqJUbXKwJUe3a5rYieHE4J80gvFV-9ui6Ag@mail.gmail.com> In-Reply-To: <1239922227.20120524120421@serebryakov.spb.ru> References: <38A5BC8F-A8FB-4371-AB1D-9548F5957254@lists.zabbadoz.net> <20120523131046.GC2358@deviant.kiev.zoral.com.ua> <12410676034.20120524013853@serebryakov.spb.ru> <8D72700F5CA4461BAD1C98908689CB9E@multiplay.co.uk> <1239922227.20120524120421@serebryakov.spb.ru>
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If all you are doing is reading, the ZFS on-disk format is well documented and fairly easy to work with. Take a look at the ZFS bootloader code - that implements a ZFS reader in not too many lines of code and could easily be re-purposed for a recovery tool. On 24 May 2012 09:04, Lev Serebryakov <lev@freebsd.org> wrote: > Hello, Steven. > You wrote 24 =D0=BC=D0=B0=D1=8F 2012 =D0=B3., 1:58:48: > > SH> While it might be a shame to see FFS go by the wayside are there any > SH> big reasons why you would rather stick with FFS instead of moving > SH> to ZFS with all the benefits that brings? > I afraid, that after real hardware failure (like real HDD death, > not these pseudo-broken-hardware situations, when HDDs is perfectly > alive and in good condition), all data will be lost. I could restore > data from remains of FFS by hands (format is straightforward and > well-known), but ZFS is different story... > > And all these messages about panics after pool import... Yes, it > could be result of REAL hardware problems, but I want to have some > hope to restore some of the data after such crashes. > > Yes, backups is solution, but I don't have money to buy (reliable) > hardware to backup 4Tb of data :( > > I attended "Solaris internals" 5-days training four years ago (when I > worked for Sun Microsystems), and instructor says same words... > > > -- > // Black Lion AKA Lev Serebryakov <lev@FreeBSD.org> > > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org= " >
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