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01-05-2008, 07:42 AM
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 Will reducevg -d VG_NAME hdisk# destroy data ? Hi.. I have a volume group, which has 1 logical volume in it (spread across 2 disk, hdisk18 and hdisk19). It seems as though hdisk18 is on a slower disk array, and I've added some faster disk to that volume group, by using extendlv 'VG_NAME' hdisk49 Now, can I remove the slow disk from the volume group by using reducevg '-d' VG_NAME hdisk18 without destroying data on the logical volume or filesystem mounted on those disks ? Thanks      |
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01-05-2008, 07:42 AM
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| Re: Will reducevg -d VG_NAME hdisk# destroy data ? On 2005-10-20, Unix User <Unix_User@gm.com> wrote: > Now, can I remove the slow disk from the volume group by using > > reducevg '-d' VG_NAME hdisk18 > > without destroying data on the logical volume or filesystem mounted on > those disks ? Yes, but you must move the data off of it first. If you run reducevg now, it will print a warning that the disk is not empty and exit. See the manual page for migratepv. After migratepv, run reducevg. -- Jurjen Oskam |
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01-05-2008, 07:42 AM
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| Re: Will reducevg -d VG_NAME hdisk# destroy data ? Thanks.. Can I run migratepv -l lvname hdisk1 hdisk2, with software / applications running and open on the filesystem mounted on the lvname listed above ? Or to all applications / software have to be shutdown before I run the migratepv command listed.. Jurjen Oskam wrote: > On 2005-10-20, Unix User <Unix_User@gm.com> wrote: > > >>Now, can I remove the slow disk from the volume group by using >> >>reducevg '-d' VG_NAME hdisk18 >> >>without destroying data on the logical volume or filesystem mounted on >>those disks ? > > > Yes, but you must move the data off of it first. If you run reducevg now, > it will print a warning that the disk is not empty and exit. See the manual > page for migratepv. After migratepv, run reducevg. > |
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01-05-2008, 07:42 AM
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| Re: Will reducevg -d VG_NAME hdisk# destroy data ? You can run migratepv hdisk1 hdisk2 with filesystems mounted and applications running. Expect too see a performance degredation. user <user@gm.com> wrote: >Thanks.. > >Can I run migratepv -l lvname hdisk1 hdisk2, with software / >applications running and open on the filesystem mounted on the lvname >listed above ? Or to all applications / software have to be shutdown >before I run the migratepv command listed.. > > > >Jurjen Oskam wrote: >> On 2005-10-20, Unix User <Unix_User@gm.com> wrote: >> >> >>>Now, can I remove the slow disk from the volume group by using >>> >>>reducevg '-d' VG_NAME hdisk18 >>> >>>without destroying data on the logical volume or filesystem mounted on >>>those disks ? >> >> >> Yes, but you must move the data off of it first. If you run reducevg now, >> it will print a warning that the disk is not empty and exit. See the manual >> page for migratepv. After migratepv, run reducevg. >> |
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