Date: Thu, 29 Sep 2011 16:09:20 -0400 From: Jerry McAllister <jerrymc@msu.edu> To: ??????? ??????? <kes-kes@yandex.ru> Cc: freebsd-questions@freebsd.org Subject: Re: dump/restore, how to reduce slice size Message-ID: <20110929200920.GB46979@gizmo.acns.msu.edu> In-Reply-To: <1511250858.20110929223638@yandex.ru> References: <1511250858.20110929223638@yandex.ru>
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On Thu, Sep 29, 2011 at 10:36:38PM +0300, ??????? ??????? wrote: > Hi, Freebsd-questions. > > # df -h > Filesystem Size Used Avail Capacity Mounted on > /dev/ad4s1a 2G 206M 1.6G 11% / > devfs 1.0k 1.0k 0B 100% /dev > /dev/ad4s1e 3.9G 13M 3.6G 0% /tmp > /dev/ad4s1f 40G 25G 12G 67% /usr > /dev/ad4s1d 31G 3.6G 24G 13% /var > procfs 4.0k 4.0k 0B 100% /proc > /dev/ad2s1f 39G 25G 10G 71% /mnt > devfs 1.0k 1.0k 0B 100% /var/named/dev > > > as you can see /dev/ad4s1f is 40G and /dev/ad2s1f is 39G > but on ad4s1f only 25G used. > > How can I dump /dev/ad4s1f and restore it on /dev/ad2s1f? > > These commands: > #mount /dev/ad2s1f /mnt > #cd /mnt > #dump -0Lf - /usr | restore -rf - > does not help, because of ad2s1f does not have space to restore > 'end of ' /dev/ad4s1f. > > May help any? Well, you are going to have difficulty putting 50 GB on a 39 GB partition. (25GB + 25GB = 50GB). It won't work. You could try compressing the dump, but dump files do not tend to compress well and even if you got a 50% compression, you would still be really close to overfill. Probably you need to go to the store and get a nice big USB drive and slice and partition it in to a bunch of 50 GB partitions and pipe your dump to a restore in those partitions on that drive. You can round-robin your backups to those USB partitions. My backup to a USB hard drive just saved me the beginning of this week when the old machine died of heat prostration. ////jerry ////jerry > > -- > Konkov mailto:kes-kes@yandex.ru > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" >
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