The less tool can open multiple files in order, I find this useful when comparing sets of logs. For instance Which will open the first file it finds and hold the rest in reserve, switching forward and backwards through this … Continue reading
Simple tip, to decode thread stack dumps from Lustre file system, which typically get dumped into /tmp, run: lctl df <input file> <output file> This will leave you with an ascii formatted, human readable stack trace which can be used … Continue reading
I’ve been trying hard lately to take useful code I’ve written over the years for different projects (such as my predictive anti-spam system Ruckus scanmail) and rep.ublish the libraries with more generic names under CPAN Filesys::Virtual::Chroot provides advisory functions for … Continue reading
Well it’s been another year, and another Lustre User Group meeting. There were many interesting discussions which took place. Though in general I found the most useful session to be after the LUG was completed. The developer meeting, for me … Continue reading
So your file system has crashed… Upon running e2fsck against it you’re now seeing error such as: Pass 1B: Rescanning for multiply-claimed blocks Multiply-claimed block(s) in inode 4195619: 167904376 167904377 167904378 167904379 167904380 167904381 167904382 167904383 167904384 167904385 167904386 167949296 … Continue reading
Just a quick note about figuring out existing internal journal sizes for EXT3 / EXT4 and LDISKFS file systems: First thing to do is determine the current inode block, this is usually inode 8, however this may change depending on … Continue reading
Today I had the task of updating my backup system, for a long time I didn’t bother rolling backups because, well I just didn’t care. However I now wanted to set something up. I remembered long ago that I had … Continue reading
Hi All, Today I’m releasing ZPcheck version 1.4, which is the initial public release. It’s a simple tool to regularly check and report on ZFS pools. Included in the reports generated by ZPcheck are smartd logging (if available) from your … Continue reading
So I’m not sure how others run their home networks but in my case I have a single large NFS NAS. This NAS hosts both Samba and NFS shares as well as a web portal. After many years of trying … Continue reading
So after looking around this morning for a simple file system script to alert me when my ZFS pools have problems on my new file server I found a few, the problem was none worked correctly. Strangely these scripts were … Continue reading