62 reputation
8
bio website wawrzek.name
location England, United Kingdom
age 36
visits member for 2 years, 7 months
seen Nov 14 at 15:21

I works as Cloud Engineer with Blinkx. I've been using a lot of python and bash/zsh to improve my work environment.


Aug
1
comment input/output error at clean ext3 partition - how to check what wrong with data block
No, that one is on older version: 2.6.18-128.1.10.el5 and it different hardware: "P400" rather than "P410".
Aug
1
comment input/output error at clean ext3 partition - how to check what wrong with data block
Firmware Version: 5.14 in this case, but I see the same problem on another machine with Firmware Version: 7.22.
Aug
1
comment input/output error at clean ext3 partition - how to check what wrong with data block
hpacucli doesn't show any issues. I tried it. The version hpacucli version ACU CLI Version: 9.0-24.0 SoulAPI Version: 5.2.102.0
Aug
1
comment input/output error at clean ext3 partition - how to check what wrong with data block
The hardware is old and in process of refresh, there is also process of upgrade to CentOS6. That actual problem is not so big. For that disk we will replace it and refresh data. My investigation is more to establish rule, so we can cope with these kind of issues more actively. (Un)Luckily I see similar issues in 'few' other places and I think I should be able to compare different kernel/OS combination.
Aug
1
comment input/output error at clean ext3 partition - how to check what wrong with data block
As I wrote in the main message fs at 2k blocks. Also I have a list of badblocks from previous run and following command (bad_block-1)/4+1=logical_bad_block seems to work (not sure about that +1). The list of kernel is subset of block from badblock - what make sense.
Aug
1
comment input/output error at clean ext3 partition - how to check what wrong with data block
Nothing interesting there: 2014-07-29T18:28:45.091544-04:00 host kernel: Buffer I/O error on device cciss/c0d5, logical block 135329616 2014-07-29T18:28:45.152892-04:00 host kernel: cciss: cmd ffff810037e00000 has CHECK CONDITION sense key = 0x3 2014-07-29T18:28:45.153056-04:00 host kernel: Buffer I/O error on device cciss/c0d5, logical block 135329616 2014-07-29T18:28:45.194790-04:00 host kernel: cciss: cmd ffff810037e00000 has CHECK CONDITION sense key = 0x3 2014-07-29T18:28:45.194879-04:00 host kernel: Buffer I/O error on device cciss/c0d5, logical block 135329616
Aug
1
comment input/output error at clean ext3 partition - how to check what wrong with data block
Following @Peter answer I noticed following lines in kernel log: Buffer I/O error on device sdf, logical block 147304164, but not after my copy attempt. On the hand following line seems to coincident with my read try: cciss: cmd ffff810037e00000 has CHECK CONDITION sense key = 0x3
May
9
comment What process does 'own' socket in 'Time Wait' state?
Thanks Dennis ;). Saying about articles on TIME_WAIT there is another one: serverframework.com/asynchronousevents/2011/01/…
Feb
5
comment cron job failing silently
@blask can you please paste your entry in from crontab.
Sep
27
comment Different block sizes for partition and underlying logical disk on HP Raid Controller (Linux)
Thanks again. I'm going to give all of them a try, just need to set up test environment.
Sep
27
comment Different block sizes for partition and underlying logical disk on HP Raid Controller (Linux)
Thanks for responses (and editing question -it looked as I didn't check it before sending). The goal is to find any possible performance improvement for our current cheap but not the most efficient system, without spending fortune, i.e. for building better RAID configuration. One of the line of attack is to tweak I/O elevator on the kernel level. i.e. there are suggestions that noop one may be better for box with raid controllers. That led me to looking more carefully on RAID configuration, blockdev output. I found some things I not fully understand and wanted to double check its meaning.
Sep
25
comment Is it worth to create one partion filling whole disk on Linux?
I prefer to have only necessary layers of software. Recently I've dived depper into I/O performance and started to wonder I got (or lost) anything with and without partition table, in situation where the whole disk was assigned to one partition. BTW When I was working with a lot of VMs I made LVM directly onto a 'disk' and put everything on it. I didn't have any problem, but wonder if it possible was just a luck.