See lvreduce .. also vgreduce (but you can only remove unused physical volumes which ain't always easy). If you do a 'man lvreduce' it will caution you that you need to resize the filesystem before you resize the LV.. pay attention to that :-)
Scott Rohling On Fri, Aug 15, 2008 at 11:24 AM, Ryan McCain <[EMAIL PROTECTED]>wrote: > We are mainly an EXT3 shop. I know z/VM can grow an LVMd EXT3 fs, just not > sure if it has the ability to shrink it. > > >>> On Fri, Aug 15, 2008 at 12:07 PM, in message > <[EMAIL PROTECTED]>, > "Fargusson.Alan" <[EMAIL PROTECTED]> wrote: > > It depends on the filesystem. Some can shrink and some can't. Also some > can > > shrink only if there are no used blocks in the area that is going to be > > removed. > > > > -----Original Message----- > > From: Linux on 390 Port [mailto:[EMAIL PROTECTED] Behalf Of > > Ryan McCain > > Sent: Friday, August 15, 2008 9:43 AM > > To: LINUX-390@VM.MARIST.EDU > > Subject: Re: Root filesystem > > > > > > Is it possible to shrink a LVM fs, not just grow it? > > > >>>> On Fri, Aug 15, 2008 at 11:04 AM, in message > > <[EMAIL PROTECTED]>, Mark Post > > <[EMAIL PROTECTED]> wrote: > >>>>> On 8/15/2008 at 12:58 AM, in message < > [EMAIL PROTECTED]>, Mark > >> Perry <[EMAIL PROTECTED]> wrote: > >> -snip- > >>> Is there a way to trigger a script when a filesystem (FS) hits a > certain > >>> percentage full? (90%?) > >> > >> Of course. I have such a thing set up on my Slack/390 development > systems > >> so that I know when to temporarily suspend rsynching from my "upstream" > >> source at slackware.com. > >> > >>> If so, then one could develop a method to automatically issue the > >>> required lvresize and ext2online commands to keep the FS within a > >>> certain percentage range (70-90%?). Of course rules could be developed > >>> to make this more sophisticated: > >>> which FS are controlled, what % range per FS, limits of VG % free etc. > >> > >> You're certainly willing to do that to yourself. I would not want to do > it, > > > >> nor make that available to others. That sort of thing is very, very, > >> complicated, and I would want a human looking at that and making > decisions, > >> not software. > >> > >> > >> Mark Post > >> > >> ---------------------------------------------------------------------- > >> For LINUX-390 subscribe / signoff / archive access instructions, > >> send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 > or > >> visit > >> http://www.marist.edu/htbin/wlvindex?LINUX-390 > > > > ---------------------------------------------------------------------- > > For LINUX-390 subscribe / signoff / archive access instructions, > > send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or > > visit > > http://www.marist.edu/htbin/wlvindex?LINUX-390 > > > > > ____________________________________________________________________________ > > ______________________ > > > > CONFIDENTIALITY NOTICE: This email from the State of California is for > the > > sole use of the intended recipient and may contain confidential and > > privileged information. Any unauthorized review or use, including > disclosure > > or distribution, is prohibited. If you are not the intended recipient, > > please contact the sender and destroy all copies of this email. > > > > ---------------------------------------------------------------------- > > For LINUX-390 subscribe / signoff / archive access instructions, > > send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or > > visit > > http://www.marist.edu/htbin/wlvindex?LINUX-390 > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or > visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
