Date: Thu, 4 Sep 2003 11:01:55 +0000 From: Geoff Buckingham <geoffb@chuggalug.clues.com> To: Terry Lambert <tlambert2@mindspring.com> Cc: Max Clark <max.clark@media.net> Subject: Re: 20TB Storage System (fsck????) Message-ID: <20030904110155.GA35273@chuggalug.clues.com> In-Reply-To: <3F56F3FD.C636781@mindspring.com> References: <ILENIMHFIPIBHJLCDEHKOECFDDAA.max.clark@media.net> <3F56F3FD.C636781@mindspring.com>
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On Thu, Sep 04, 2003 at 01:12:45AM -0700, Terry Lambert wrote: > > Yes. Limit the number of CG bitmaps you examine simultaneously, > and make the operation multiple pass over the disk. This is not > that hard a modification to fsck, and it can be done fairly > quickly by anyone who understands the code. The code in time to > fsck the disk will go up inversely proportionally to the amount > of RAM it's allowed to use, which is limited to the UVA size > minus the fsck program size itself, and the fsck buffers used for > things like FS metadata for a given file/directory. > > Pardon my ignorance but does the number of inodes in the filesystem have a significant impact on the memory requirement of fsck? I ask as it was previously stated the smallest file on the 10TB filessytem would be 500MB which would enable a vastley reduced number of inodes and possibly very large block fragment and cluster sizes?
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